./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8 --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 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:52:02,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:52:02,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:52:03,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:52:03,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:52:03,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:52:03,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:52:03,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:52:03,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:52:03,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:52:03,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:52:03,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:52:03,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:52:03,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:52:03,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:52:03,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:52:03,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:52:03,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:52:03,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:52:03,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:52:03,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:52:03,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:52:03,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:52:03,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:52:03,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:52:03,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:52:03,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:52:03,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:52:03,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:52:03,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:52:03,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:52:03,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:52:03,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:52:03,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:52:03,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:52:03,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:52:03,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:52:03,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:52:03,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:52:03,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:52:03,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:52:03,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 17:52:03,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:52:03,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:52:03,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:52:03,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:52:03,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:52:03,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:52:03,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:52:03,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:52:03,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:52:03,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:52:03,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:52:03,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:52:03,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:52:03,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:52:03,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:52:03,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:52:03,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:52:03,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:52:03,053 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2022-12-13 17:52:03,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:52:03,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:52:03,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:52:03,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:52:03,233 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:52:03,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-12-13 17:52:05,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:52:06,097 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:52:06,097 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-12-13 17:52:06,114 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/data/cc8985324/974baac7297444f4b134878fbe29ae37/FLAGb523fbcd8 [2022-12-13 17:52:06,125 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/data/cc8985324/974baac7297444f4b134878fbe29ae37 [2022-12-13 17:52:06,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:52:06,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:52:06,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:52:06,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:52:06,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:52:06,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:52:06" (1/1) ... [2022-12-13 17:52:06,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6189de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:06, skipping insertion in model container [2022-12-13 17:52:06,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:52:06" (1/1) ... [2022-12-13 17:52:06,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:52:06,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:52:06,384 WARN L237 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_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2022-12-13 17:52:06,390 WARN L237 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_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2022-12-13 17:52:06,959 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 17:52:07,007 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,013 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,013 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,014 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,015 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,016 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,019 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,029 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,030 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,030 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,032 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,032 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,034 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,035 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,035 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,036 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,037 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,112 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:52:07,113 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:52:07,114 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:52:07,118 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 17:52:07,120 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 17:52:07,121 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 17:52:07,390 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 17:52:07,391 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 17:52:07,392 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 17:52:07,393 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 17:52:07,394 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 17:52:07,395 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 17:52:07,396 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 17:52:07,397 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 17:52:07,397 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 17:52:07,398 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 17:52:07,398 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 17:52:07,534 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,535 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,539 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,540 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,542 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,543 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,544 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,545 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,548 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,549 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,549 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,549 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,550 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,550 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,580 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:52:07,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:52:07,603 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:52:07,612 WARN L237 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_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2022-12-13 17:52:07,612 WARN L237 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_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2022-12-13 17:52:07,633 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 17:52:07,641 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,643 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,643 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,643 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,644 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,644 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,645 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,649 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,649 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,649 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,650 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,650 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,651 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,651 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,651 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,652 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,652 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,656 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:52:07,656 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:52:07,657 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:52:07,659 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 17:52:07,660 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 17:52:07,660 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 17:52:07,673 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 17:52:07,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 17:52:07,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 17:52:07,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 17:52:07,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 17:52:07,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 17:52:07,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 17:52:07,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 17:52:07,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 17:52:07,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 17:52:07,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 17:52:07,695 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,695 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,696 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,697 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,698 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,699 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:52:07,700 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,702 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,702 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,702 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,702 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,703 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,703 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:52:07,715 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:52:07,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:52:07,859 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:52:07,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07 WrapperNode [2022-12-13 17:52:07,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:52:07,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:52:07,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:52:07,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:52:07,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:07,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:07,986 INFO L138 Inliner]: procedures = 691, calls = 1672, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 694 [2022-12-13 17:52:07,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:52:07,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:52:07,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:52:07,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:52:07,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:07,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:52:08,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:52:08,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:52:08,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:52:08,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (1/1) ... [2022-12-13 17:52:08,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:52:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:08,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:52:08,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:52:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:52:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-12-13 17:52:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-12-13 17:52:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-13 17:52:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-13 17:52:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 17:52:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 17:52:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-12-13 17:52:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-13 17:52:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 17:52:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 17:52:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-12-13 17:52:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-12-13 17:52:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:52:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:52:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 17:52:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 17:52:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-13 17:52:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-13 17:52:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-13 17:52:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-13 17:52:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-13 17:52:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-13 17:52:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 17:52:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 17:52:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-12-13 17:52:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-12-13 17:52:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-12-13 17:52:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-12-13 17:52:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 17:52:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-13 17:52:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-12-13 17:52:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-12-13 17:52:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:52:08,349 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:52:08,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:52:09,145 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:52:09,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:52:09,151 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:52:09,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:52:09 BoogieIcfgContainer [2022-12-13 17:52:09,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:52:09,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:52:09,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:52:09,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:52:09,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:52:06" (1/3) ... [2022-12-13 17:52:09,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc92afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:52:09, skipping insertion in model container [2022-12-13 17:52:09,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:52:07" (2/3) ... [2022-12-13 17:52:09,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc92afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:52:09, skipping insertion in model container [2022-12-13 17:52:09,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:52:09" (3/3) ... [2022-12-13 17:52:09,159 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2022-12-13 17:52:09,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:52:09,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:52:09,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:52:09,215 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c976743, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:52:09,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:52:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-13 17:52:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 17:52:09,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:09,230 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:09,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-12-13 17:52:09,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:09,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513121414] [2022-12-13 17:52:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:09,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513121414] [2022-12-13 17:52:09,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 17:52:09,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630491042] [2022-12-13 17:52:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:09,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:09,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:09,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:52:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:09,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:52:09,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-12-13 17:52:10,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:10,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630491042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:10,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:10,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:52:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714747498] [2022-12-13 17:52:10,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:10,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:52:10,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:52:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:52:10,133 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 17:52:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:10,524 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-12-13 17:52:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:52:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2022-12-13 17:52:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:10,534 INFO L225 Difference]: With dead ends: 416 [2022-12-13 17:52:10,534 INFO L226 Difference]: Without dead ends: 206 [2022-12-13 17:52:10,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:52:10,540 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 277 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:10,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 778 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:52:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-13 17:52:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-12-13 17:52:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-12-13 17:52:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-12-13 17:52:10,586 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-12-13 17:52:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:10,586 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-12-13 17:52:10,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 17:52:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-12-13 17:52:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 17:52:10,589 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:10,590 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:10,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:52:10,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 17:52:10,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:10,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-12-13 17:52:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507647003] [2022-12-13 17:52:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:10,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:10,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:10,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605102145] [2022-12-13 17:52:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:10,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:10,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:52:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:11,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:52:11,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-12-13 17:52:11,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:11,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507647003] [2022-12-13 17:52:11,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:11,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605102145] [2022-12-13 17:52:11,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605102145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:11,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:11,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:52:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197012075] [2022-12-13 17:52:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:52:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:52:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:52:11,347 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-13 17:52:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:11,390 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-12-13 17:52:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:52:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2022-12-13 17:52:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:11,394 INFO L225 Difference]: With dead ends: 410 [2022-12-13 17:52:11,394 INFO L226 Difference]: Without dead ends: 211 [2022-12-13 17:52:11,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:52:11,397 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:11,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:52:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-13 17:52:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-12-13 17:52:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-12-13 17:52:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-12-13 17:52:11,423 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-12-13 17:52:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:11,424 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-12-13 17:52:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-13 17:52:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-12-13 17:52:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 17:52:11,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:11,428 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:11,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:52:11,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:11,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:11,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-12-13 17:52:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:11,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468090218] [2022-12-13 17:52:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:11,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:11,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197031023] [2022-12-13 17:52:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:11,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:11,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:11,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:11,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:52:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:52:12,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-12-13 17:52:12,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:12,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468090218] [2022-12-13 17:52:12,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197031023] [2022-12-13 17:52:12,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197031023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:12,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:12,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:52:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511005467] [2022-12-13 17:52:12,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:12,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:52:12,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:52:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:52:12,137 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 17:52:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:12,375 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-12-13 17:52:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:52:12,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2022-12-13 17:52:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:12,379 INFO L225 Difference]: With dead ends: 383 [2022-12-13 17:52:12,379 INFO L226 Difference]: Without dead ends: 208 [2022-12-13 17:52:12,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:52:12,380 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:12,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 769 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:52:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-13 17:52:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-12-13 17:52:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-12-13 17:52:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-12-13 17:52:12,401 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-12-13 17:52:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:12,401 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-12-13 17:52:12,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 17:52:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-12-13 17:52:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 17:52:12,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:12,404 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:12,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:52:12,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:12,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:12,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-12-13 17:52:12,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219995302] [2022-12-13 17:52:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:12,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:12,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140569374] [2022-12-13 17:52:12,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:52:12,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:12,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:12,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:12,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:52:13,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:52:13,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:52:13,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:52:13,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-12-13 17:52:13,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:13,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219995302] [2022-12-13 17:52:13,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140569374] [2022-12-13 17:52:13,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140569374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:13,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:13,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:52:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313955931] [2022-12-13 17:52:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:13,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:52:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:52:13,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:52:13,142 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-13 17:52:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:13,174 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-12-13 17:52:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:52:13,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2022-12-13 17:52:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:13,177 INFO L225 Difference]: With dead ends: 269 [2022-12-13 17:52:13,177 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 17:52:13,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:52:13,178 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:13,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1085 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:52:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 17:52:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-12-13 17:52:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2022-12-13 17:52:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-12-13 17:52:13,189 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-12-13 17:52:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:13,190 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-12-13 17:52:13,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-13 17:52:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-12-13 17:52:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-13 17:52:13,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:13,191 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:13,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:52:13,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:13,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-12-13 17:52:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:13,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927244142] [2022-12-13 17:52:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:13,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:13,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:13,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574052070] [2022-12-13 17:52:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:13,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:13,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:52:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:13,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:52:13,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-12-13 17:52:13,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927244142] [2022-12-13 17:52:13,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574052070] [2022-12-13 17:52:13,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574052070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:13,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:13,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:52:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592503463] [2022-12-13 17:52:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:13,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:52:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:52:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:52:13,928 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-12-13 17:52:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:14,229 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-12-13 17:52:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:52:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2022-12-13 17:52:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:14,232 INFO L225 Difference]: With dead ends: 382 [2022-12-13 17:52:14,232 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 17:52:14,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:52:14,234 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:14,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 914 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:52:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 17:52:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-12-13 17:52:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2022-12-13 17:52:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-12-13 17:52:14,254 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-12-13 17:52:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:14,255 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-12-13 17:52:14,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-12-13 17:52:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-12-13 17:52:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 17:52:14,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:14,258 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:14,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:52:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:14,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-12-13 17:52:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:14,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238548538] [2022-12-13 17:52:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:14,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:14,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317775954] [2022-12-13 17:52:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:14,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:14,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:14,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:52:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:14,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:52:14,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-12-13 17:52:14,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:14,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238548538] [2022-12-13 17:52:14,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:14,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317775954] [2022-12-13 17:52:14,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317775954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:14,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:14,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:52:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107574838] [2022-12-13 17:52:14,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:52:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:52:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:52:14,972 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-13 17:52:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:15,229 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-12-13 17:52:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:52:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2022-12-13 17:52:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:15,231 INFO L225 Difference]: With dead ends: 379 [2022-12-13 17:52:15,232 INFO L226 Difference]: Without dead ends: 211 [2022-12-13 17:52:15,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:52:15,233 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:15,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:52:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-13 17:52:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-12-13 17:52:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-12-13 17:52:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-12-13 17:52:15,241 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-12-13 17:52:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:15,242 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-12-13 17:52:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-13 17:52:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-12-13 17:52:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-12-13 17:52:15,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:15,243 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:15,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:52:15,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:15,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-12-13 17:52:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:15,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422268273] [2022-12-13 17:52:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:15,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:15,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297836202] [2022-12-13 17:52:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:15,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:15,537 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:15,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:52:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:16,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:52:16,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-12-13 17:52:16,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:52:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422268273] [2022-12-13 17:52:16,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:16,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297836202] [2022-12-13 17:52:16,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297836202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:52:16,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:52:16,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:52:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943872740] [2022-12-13 17:52:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:52:16,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:52:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:52:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:52:16,029 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-12-13 17:52:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:16,065 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-12-13 17:52:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:52:16,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2022-12-13 17:52:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:16,067 INFO L225 Difference]: With dead ends: 269 [2022-12-13 17:52:16,068 INFO L226 Difference]: Without dead ends: 220 [2022-12-13 17:52:16,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:52:16,069 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 4 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:16,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1363 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:52:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-13 17:52:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-12-13 17:52:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-12-13 17:52:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-12-13 17:52:16,085 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-12-13 17:52:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:16,086 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-12-13 17:52:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-12-13 17:52:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-12-13 17:52:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 17:52:16,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:16,088 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:16,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:52:16,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:52:16,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:52:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-12-13 17:52:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:16,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588237577] [2022-12-13 17:52:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:16,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:52:16,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744737231] [2022-12-13 17:52:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:16,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:16,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:16,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:52:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:16,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 138 conjunts are in the unsatisfiable core [2022-12-13 17:52:16,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:16,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 17:52:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:17,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 17:52:17,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:17,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 17:52:17,948 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_977 Int) (v_ArrVal_976 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_977)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_976))))) is different from true [2022-12-13 17:52:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:18,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-13 17:52:18,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:18,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-13 17:52:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 372 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-13 17:52:19,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588237577] [2022-12-13 17:52:30,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:52:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744737231] [2022-12-13 17:52:30,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744737231] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:52:30,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:52:30,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-12-13 17:52:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060371877] [2022-12-13 17:52:30,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 17:52:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 17:52:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1621, Unknown=22, NotChecked=82, Total=1892 [2022-12-13 17:52:30,439 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 32 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 30 states have internal predecessors, (100), 12 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (31), 10 states have call predecessors, (31), 12 states have call successors, (31) [2022-12-13 17:52:34,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:52:44,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:52:52,969 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_977 Int) (v_ArrVal_976 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_977)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_976))))) (exists ((|v_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base_BEFORE_CALL_21| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base_BEFORE_CALL_21|) 32) 0) (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base_BEFORE_CALL_21|) 32) 0)))) is different from true [2022-12-13 17:52:59,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:02,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:06,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:13,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:15,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:16,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:17,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:19,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:24,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:26,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:28,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:29,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:31,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:32,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:33,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:34,781 INFO L93 Difference]: Finished difference Result 946 states and 1411 transitions. [2022-12-13 17:53:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 17:53:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 30 states have internal predecessors, (100), 12 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (31), 10 states have call predecessors, (31), 12 states have call successors, (31) Word has length 226 [2022-12-13 17:53:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:53:34,785 INFO L225 Difference]: With dead ends: 946 [2022-12-13 17:53:34,785 INFO L226 Difference]: Without dead ends: 699 [2022-12-13 17:53:34,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 305 SyntacticMatches, 10 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=881, Invalid=7294, Unknown=23, NotChecked=358, Total=8556 [2022-12-13 17:53:34,788 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 555 mSDsluCounter, 3250 mSDsCounter, 0 mSdLazyCounter, 11177 mSolverCounterSat, 571 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 12770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 11177 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 972 IncrementalHoareTripleChecker+Unchecked, 45.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:53:34,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 3546 Invalid, 12770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 11177 Invalid, 50 Unknown, 972 Unchecked, 45.2s Time] [2022-12-13 17:53:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-12-13 17:53:34,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 657. [2022-12-13 17:53:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 382 states have (on average 1.1701570680628273) internal successors, (447), 391 states have internal predecessors, (447), 217 states have call successors, (217), 51 states have call predecessors, (217), 57 states have return successors, (373), 214 states have call predecessors, (373), 213 states have call successors, (373) [2022-12-13 17:53:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1037 transitions. [2022-12-13 17:53:34,836 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1037 transitions. Word has length 226 [2022-12-13 17:53:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:53:34,836 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1037 transitions. [2022-12-13 17:53:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 30 states have internal predecessors, (100), 12 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (31), 10 states have call predecessors, (31), 12 states have call successors, (31) [2022-12-13 17:53:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1037 transitions. [2022-12-13 17:53:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-12-13 17:53:34,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:53:34,838 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:34,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:53:35,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:53:35,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:53:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 1 times [2022-12-13 17:53:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:35,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355505017] [2022-12-13 17:53:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:35,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:35,148 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:53:35,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209847351] [2022-12-13 17:53:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:35,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:35,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:35,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:35,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:53:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:35,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 17:53:35,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:35,715 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:53:35,778 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 22 treesize of output 21 [2022-12-13 17:53:35,879 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1197 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1197)))) is different from true [2022-12-13 17:53:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-12-13 17:53:44,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:53:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355505017] [2022-12-13 17:53:44,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:53:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209847351] [2022-12-13 17:53:44,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209847351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:53:44,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:53:44,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-13 17:53:44,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650921010] [2022-12-13 17:53:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:53:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:53:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:53:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-12-13 17:53:44,064 INFO L87 Difference]: Start difference. First operand 657 states and 1037 transitions. Second operand has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-12-13 17:53:47,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:49,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:51,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:53,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:53:55,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:53:57,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:53:59,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:03,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:05,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:09,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:11,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:15,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:17,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:19,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:21,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:23,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:26,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:54:52,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:08,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:16,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:19,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:21,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:23,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:25,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:27,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:29,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:31,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:34,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:36,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:38,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:41,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:43,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:46,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:48,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:50,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:52,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:54,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:56,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:55:59,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:01,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:03,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:05,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:07,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:09,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:56:09,552 INFO L93 Difference]: Finished difference Result 1366 states and 2049 transitions. [2022-12-13 17:56:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 17:56:09,553 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 232 [2022-12-13 17:56:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:56:09,556 INFO L225 Difference]: With dead ends: 1366 [2022-12-13 17:56:09,556 INFO L226 Difference]: Without dead ends: 908 [2022-12-13 17:56:09,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=250, Invalid=1266, Unknown=48, NotChecked=76, Total=1640 [2022-12-13 17:56:09,559 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 306 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 232 mSolverCounterUnsat, 144 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 6123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 144 IncrementalHoareTripleChecker+Unknown, 678 IncrementalHoareTripleChecker+Unchecked, 94.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:56:09,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 2174 Invalid, 6123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 5069 Invalid, 144 Unknown, 678 Unchecked, 94.6s Time] [2022-12-13 17:56:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-12-13 17:56:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 885. [2022-12-13 17:56:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 526 states have (on average 1.1653992395437263) internal successors, (613), 541 states have internal predecessors, (613), 269 states have call successors, (269), 83 states have call predecessors, (269), 89 states have return successors, (435), 260 states have call predecessors, (435), 262 states have call successors, (435) [2022-12-13 17:56:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1317 transitions. [2022-12-13 17:56:09,620 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1317 transitions. Word has length 232 [2022-12-13 17:56:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:56:09,620 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1317 transitions. [2022-12-13 17:56:09,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-12-13 17:56:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1317 transitions. [2022-12-13 17:56:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-12-13 17:56:09,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:56:09,623 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:56:09,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:56:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:56:09,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:56:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:56:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1816263933, now seen corresponding path program 1 times [2022-12-13 17:56:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:56:09,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853199362] [2022-12-13 17:56:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:56:09,878 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:56:09,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846390591] [2022-12-13 17:56:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:09,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:56:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:56:09,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:56:09,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:56:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:56:10,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:56:10,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:56:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-12-13 17:56:10,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:56:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:56:10,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853199362] [2022-12-13 17:56:10,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:56:10,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846390591] [2022-12-13 17:56:10,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846390591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:56:10,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:56:10,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:56:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798296628] [2022-12-13 17:56:10,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:56:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:56:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:56:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:56:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:56:10,454 INFO L87 Difference]: Start difference. First operand 885 states and 1317 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-13 17:56:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:56:10,772 INFO L93 Difference]: Finished difference Result 1766 states and 2815 transitions. [2022-12-13 17:56:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:56:10,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 236 [2022-12-13 17:56:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:56:10,779 INFO L225 Difference]: With dead ends: 1766 [2022-12-13 17:56:10,780 INFO L226 Difference]: Without dead ends: 922 [2022-12-13 17:56:10,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:56:10,785 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 10 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:56:10,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1039 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:56:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-12-13 17:56:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 894. [2022-12-13 17:56:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 535 states have (on average 1.1607476635514018) internal successors, (621), 550 states have internal predecessors, (621), 269 states have call successors, (269), 83 states have call predecessors, (269), 89 states have return successors, (435), 260 states have call predecessors, (435), 262 states have call successors, (435) [2022-12-13 17:56:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1325 transitions. [2022-12-13 17:56:10,889 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1325 transitions. Word has length 236 [2022-12-13 17:56:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:56:10,890 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1325 transitions. [2022-12-13 17:56:10,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-13 17:56:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1325 transitions. [2022-12-13 17:56:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 17:56:10,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:56:10,893 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:56:10,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:56:11,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:56:11,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:56:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:56:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash 557382757, now seen corresponding path program 1 times [2022-12-13 17:56:11,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:56:11,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965797741] [2022-12-13 17:56:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:56:11,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:56:11,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488648200] [2022-12-13 17:56:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:11,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:56:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:56:11,175 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:56:11,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:56:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:56:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 3113 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 17:56:11,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:56:11,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 17:56:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 331 proven. 1 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-12-13 17:56:11,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:56:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 25 proven. 62 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-12-13 17:56:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:56:12,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965797741] [2022-12-13 17:56:12,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:56:12,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488648200] [2022-12-13 17:56:12,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488648200] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:56:12,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:56:12,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-12-13 17:56:12,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074118627] [2022-12-13 17:56:12,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:56:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:56:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:56:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:56:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:56:12,517 INFO L87 Difference]: Start difference. First operand 894 states and 1325 transitions. Second operand has 26 states, 21 states have (on average 5.904761904761905) internal successors, (124), 19 states have internal predecessors, (124), 7 states have call successors, (46), 3 states have call predecessors, (46), 8 states have return successors, (48), 9 states have call predecessors, (48), 6 states have call successors, (48) [2022-12-13 17:56:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:56:13,418 INFO L93 Difference]: Finished difference Result 1714 states and 2545 transitions. [2022-12-13 17:56:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 17:56:13,419 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.904761904761905) internal successors, (124), 19 states have internal predecessors, (124), 7 states have call successors, (46), 3 states have call predecessors, (46), 8 states have return successors, (48), 9 states have call predecessors, (48), 6 states have call successors, (48) Word has length 254 [2022-12-13 17:56:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:56:13,423 INFO L225 Difference]: With dead ends: 1714 [2022-12-13 17:56:13,423 INFO L226 Difference]: Without dead ends: 926 [2022-12-13 17:56:13,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 478 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-12-13 17:56:13,426 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 29 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:56:13,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 5476 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 17:56:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-12-13 17:56:13,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 894. [2022-12-13 17:56:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 535 states have (on average 1.1607476635514018) internal successors, (621), 550 states have internal predecessors, (621), 269 states have call successors, (269), 83 states have call predecessors, (269), 89 states have return successors, (432), 260 states have call predecessors, (432), 262 states have call successors, (432) [2022-12-13 17:56:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1322 transitions. [2022-12-13 17:56:13,478 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1322 transitions. Word has length 254 [2022-12-13 17:56:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:56:13,478 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1322 transitions. [2022-12-13 17:56:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.904761904761905) internal successors, (124), 19 states have internal predecessors, (124), 7 states have call successors, (46), 3 states have call predecessors, (46), 8 states have return successors, (48), 9 states have call predecessors, (48), 6 states have call successors, (48) [2022-12-13 17:56:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1322 transitions. [2022-12-13 17:56:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-12-13 17:56:13,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:56:13,481 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:56:13,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:56:13,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:56:13,683 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:56:13,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:56:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2120896761, now seen corresponding path program 2 times [2022-12-13 17:56:13,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:56:13,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10459609] [2022-12-13 17:56:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:13,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:56:13,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:56:13,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454289113] [2022-12-13 17:56:13,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:56:13,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:56:13,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:56:13,765 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:56:13,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:56:14,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:56:14,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:56:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 142 conjunts are in the unsatisfiable core [2022-12-13 17:56:14,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:56:14,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 17:56:14,912 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1750 Int) (v_ArrVal_1751 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1751))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1750))))) is different from true [2022-12-13 17:56:14,930 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1750 Int) (v_ArrVal_1751 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1750)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1751)) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 17:56:14,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:56:14,979 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 29 [2022-12-13 17:56:14,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:56:14,983 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 29 [2022-12-13 17:56:15,129 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1754 Int) (v_ArrVal_1756 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1756))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1754)) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-13 17:56:15,148 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1754 Int) (v_ArrVal_1756 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1754)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1756))))) is different from true [2022-12-13 17:56:15,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:56:15,185 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 29 [2022-12-13 17:56:15,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:56:15,189 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 29 [2022-12-13 17:56:15,426 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1759 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1760 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1759))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1760))))) is different from true [2022-12-13 17:56:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 222 proven. 28 refuted. 0 times theorem prover too weak. 220 trivial. 39 not checked. [2022-12-13 17:56:26,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:56:28,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:56:28,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10459609] [2022-12-13 17:56:28,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:56:28,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454289113] [2022-12-13 17:56:28,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454289113] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:56:28,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:56:28,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-12-13 17:56:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92489734] [2022-12-13 17:56:28,660 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:56:28,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:56:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:56:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:56:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=667, Unknown=33, NotChecked=280, Total=1056 [2022-12-13 17:56:28,661 INFO L87 Difference]: Start difference. First operand 894 states and 1322 transitions. Second operand has 29 states, 24 states have (on average 4.458333333333333) internal successors, (107), 29 states have internal predecessors, (107), 12 states have call successors, (33), 4 states have call predecessors, (33), 11 states have return successors, (33), 11 states have call predecessors, (33), 11 states have call successors, (33) [2022-12-13 17:56:32,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:34,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:36,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:39,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:41,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:56:41,157 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1750 Int) (v_ArrVal_1751 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1751))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1750))))) (exists ((v_ArrVal_1759 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1760 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1759))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1760))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1754 Int) (v_ArrVal_1756 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1756))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1754)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-12-13 17:56:45,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:47,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:51,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:55,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:56:57,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:01,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:03,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:07,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:09,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:12,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:16,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:18,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:20,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:22,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:24,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:26,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:28,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:30,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:38,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:44,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:51,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:57:59,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:01,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:04,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:06,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:08,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:10,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:13,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:58:41,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:47,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:49,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:52,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:54,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:56,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:58:58,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:01,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:03,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:05,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:07,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:09,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:11,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:14,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:59:14,373 INFO L93 Difference]: Finished difference Result 1859 states and 2673 transitions. [2022-12-13 17:59:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 17:59:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 4.458333333333333) internal successors, (107), 29 states have internal predecessors, (107), 12 states have call successors, (33), 4 states have call predecessors, (33), 11 states have return successors, (33), 11 states have call predecessors, (33), 11 states have call successors, (33) Word has length 236 [2022-12-13 17:59:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:59:14,379 INFO L225 Difference]: With dead ends: 1859 [2022-12-13 17:59:14,379 INFO L226 Difference]: Without dead ends: 1095 [2022-12-13 17:59:14,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 217 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=390, Invalid=4001, Unknown=55, NotChecked=810, Total=5256 [2022-12-13 17:59:14,383 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 365 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 6099 mSolverCounterSat, 376 mSolverCounterUnsat, 122 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 8981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 6099 IncrementalHoareTripleChecker+Invalid, 122 IncrementalHoareTripleChecker+Unknown, 2384 IncrementalHoareTripleChecker+Unchecked, 105.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:59:14,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 2114 Invalid, 8981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 6099 Invalid, 122 Unknown, 2384 Unchecked, 105.9s Time] [2022-12-13 17:59:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-12-13 17:59:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1005. [2022-12-13 17:59:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 615 states have (on average 1.1560975609756097) internal successors, (711), 632 states have internal predecessors, (711), 280 states have call successors, (280), 102 states have call predecessors, (280), 109 states have return successors, (428), 270 states have call predecessors, (428), 272 states have call successors, (428) [2022-12-13 17:59:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1419 transitions. [2022-12-13 17:59:14,494 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1419 transitions. Word has length 236 [2022-12-13 17:59:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:59:14,494 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1419 transitions. [2022-12-13 17:59:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 4.458333333333333) internal successors, (107), 29 states have internal predecessors, (107), 12 states have call successors, (33), 4 states have call predecessors, (33), 11 states have return successors, (33), 11 states have call predecessors, (33), 11 states have call successors, (33) [2022-12-13 17:59:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1419 transitions. [2022-12-13 17:59:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-12-13 17:59:14,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:59:14,498 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:59:14,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:59:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:59:14,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:59:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:59:14,700 INFO L85 PathProgramCache]: Analyzing trace with hash 681080207, now seen corresponding path program 3 times [2022-12-13 17:59:14,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:59:14,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702004064] [2022-12-13 17:59:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:59:14,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:59:14,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654867502] [2022-12-13 17:59:14,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:59:14,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:59:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:59:14,782 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:59:14,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:59:15,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:59:15,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:59:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2306 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 17:59:15,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:59:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-12-13 17:59:15,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:59:15,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:59:15,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702004064] [2022-12-13 17:59:15,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:59:15,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654867502] [2022-12-13 17:59:15,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654867502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:59:15,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:59:15,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 17:59:15,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785081169] [2022-12-13 17:59:15,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:59:15,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:59:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:59:15,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:59:15,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:59:15,842 INFO L87 Difference]: Start difference. First operand 1005 states and 1419 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 9 states have internal predecessors, (95), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-13 17:59:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:59:16,190 INFO L93 Difference]: Finished difference Result 1805 states and 2565 transitions. [2022-12-13 17:59:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:59:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 9 states have internal predecessors, (95), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) Word has length 252 [2022-12-13 17:59:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:59:16,194 INFO L225 Difference]: With dead ends: 1805 [2022-12-13 17:59:16,194 INFO L226 Difference]: Without dead ends: 1005 [2022-12-13 17:59:16,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:59:16,196 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 9 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:59:16,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2858 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:59:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-12-13 17:59:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2022-12-13 17:59:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 615 states have (on average 1.1560975609756097) internal successors, (711), 632 states have internal predecessors, (711), 280 states have call successors, (280), 102 states have call predecessors, (280), 109 states have return successors, (424), 270 states have call predecessors, (424), 272 states have call successors, (424) [2022-12-13 17:59:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1415 transitions. [2022-12-13 17:59:16,275 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1415 transitions. Word has length 252 [2022-12-13 17:59:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:59:16,276 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1415 transitions. [2022-12-13 17:59:16,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 9 states have internal predecessors, (95), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-13 17:59:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1415 transitions. [2022-12-13 17:59:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-12-13 17:59:16,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:59:16,280 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:59:16,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 17:59:16,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 17:59:16,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:59:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:59:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1635251963, now seen corresponding path program 4 times [2022-12-13 17:59:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:59:16,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918209767] [2022-12-13 17:59:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:16,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:59:16,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:59:16,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217902772] [2022-12-13 17:59:16,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:59:16,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:59:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:59:16,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:59:16,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:59:16,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:59:16,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:59:16,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 3115 conjuncts, 133 conjunts are in the unsatisfiable core [2022-12-13 17:59:16,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:59:16,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 17:59:17,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 17:59:17,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 17:59:17,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 17:59:17,727 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2131 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2131) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2132 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2132) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-13 17:59:17,740 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-12-13 17:59:17,746 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-12-13 17:59:17,874 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2134 Int) (v_ArrVal_2136 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2136))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2134)) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-13 17:59:17,891 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2134 Int) (v_ArrVal_2136 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2134))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2136)) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 17:59:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:59:17,936 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:59:17,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:59:17,939 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:59:18,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 17:59:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 333 proven. 32 refuted. 0 times theorem prover too weak. 153 trivial. 7 not checked. [2022-12-13 17:59:18,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:59:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:59:19,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918209767] [2022-12-13 17:59:19,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:59:19,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217902772] [2022-12-13 17:59:19,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217902772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:59:19,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:59:19,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-12-13 17:59:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756743420] [2022-12-13 17:59:19,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:59:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 17:59:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:59:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 17:59:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1148, Unknown=7, NotChecked=210, Total=1482 [2022-12-13 17:59:19,160 INFO L87 Difference]: Start difference. First operand 1005 states and 1415 transitions. Second operand has 31 states, 26 states have (on average 4.038461538461538) internal successors, (105), 28 states have internal predecessors, (105), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) [2022-12-13 17:59:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:59:30,122 INFO L93 Difference]: Finished difference Result 2090 states and 3026 transitions. [2022-12-13 17:59:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 17:59:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 4.038461538461538) internal successors, (105), 28 states have internal predecessors, (105), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) Word has length 246 [2022-12-13 17:59:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:59:30,127 INFO L225 Difference]: With dead ends: 2090 [2022-12-13 17:59:30,127 INFO L226 Difference]: Without dead ends: 1384 [2022-12-13 17:59:30,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 339 SyntacticMatches, 9 SemanticMatches, 75 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=477, Invalid=4920, Unknown=17, NotChecked=438, Total=5852 [2022-12-13 17:59:30,130 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 326 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 8691 mSolverCounterSat, 318 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 11121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 8691 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 2091 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:59:30,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 3937 Invalid, 11121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 8691 Invalid, 21 Unknown, 2091 Unchecked, 9.0s Time] [2022-12-13 17:59:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-12-13 17:59:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1286. [2022-12-13 17:59:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 781 states have (on average 1.1536491677336749) internal successors, (901), 801 states have internal predecessors, (901), 368 states have call successors, (368), 129 states have call predecessors, (368), 136 states have return successors, (636), 355 states have call predecessors, (636), 358 states have call successors, (636) [2022-12-13 17:59:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1905 transitions. [2022-12-13 17:59:30,223 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1905 transitions. Word has length 246 [2022-12-13 17:59:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:59:30,224 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1905 transitions. [2022-12-13 17:59:30,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 4.038461538461538) internal successors, (105), 28 states have internal predecessors, (105), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) [2022-12-13 17:59:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1905 transitions. [2022-12-13 17:59:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-13 17:59:30,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:59:30,226 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:59:30,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 17:59:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:59:30,428 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:59:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:59:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1970238209, now seen corresponding path program 1 times [2022-12-13 17:59:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:59:30,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526600783] [2022-12-13 17:59:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:59:30,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:59:30,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30987208] [2022-12-13 17:59:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:30,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:59:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:59:30,490 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:59:30,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:59:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:59:30,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 102 conjunts are in the unsatisfiable core [2022-12-13 17:59:30,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:59:31,096 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:59:31,101 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:59:31,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-12-13 17:59:31,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-13 17:59:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 17:59:31,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:59:31,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:59:31,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526600783] [2022-12-13 17:59:31,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:59:31,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30987208] [2022-12-13 17:59:31,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30987208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:59:31,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:59:31,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 17:59:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14925440] [2022-12-13 17:59:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:59:31,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:59:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:59:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:59:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=444, Unknown=8, NotChecked=0, Total=506 [2022-12-13 17:59:31,928 INFO L87 Difference]: Start difference. First operand 1286 states and 1905 transitions. Second operand has 23 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-12-13 17:59:34,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:59:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:59:41,875 INFO L93 Difference]: Finished difference Result 2100 states and 3137 transitions. [2022-12-13 17:59:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 17:59:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) Word has length 242 [2022-12-13 17:59:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:59:41,880 INFO L225 Difference]: With dead ends: 2100 [2022-12-13 17:59:41,880 INFO L226 Difference]: Without dead ends: 1338 [2022-12-13 17:59:41,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=175, Invalid=1537, Unknown=10, NotChecked=0, Total=1722 [2022-12-13 17:59:41,883 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 252 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 4355 mSolverCounterSat, 119 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 4521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 4355 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:59:41,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1659 Invalid, 4521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 4355 Invalid, 47 Unknown, 0 Unchecked, 8.8s Time] [2022-12-13 17:59:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-12-13 17:59:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1223. [2022-12-13 17:59:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 747 states have (on average 1.1512717536813923) internal successors, (860), 770 states have internal predecessors, (860), 339 states have call successors, (339), 129 states have call predecessors, (339), 136 states have return successors, (622), 323 states have call predecessors, (622), 330 states have call successors, (622) [2022-12-13 17:59:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1821 transitions. [2022-12-13 17:59:42,024 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1821 transitions. Word has length 242 [2022-12-13 17:59:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:59:42,024 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1821 transitions. [2022-12-13 17:59:42,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-12-13 17:59:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1821 transitions. [2022-12-13 17:59:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-13 17:59:42,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:59:42,027 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:59:42,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 17:59:42,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:59:42,228 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:59:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:59:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash -613411903, now seen corresponding path program 1 times [2022-12-13 17:59:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:59:42,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159478316] [2022-12-13 17:59:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:59:42,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:59:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527711990] [2022-12-13 17:59:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:42,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:59:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:59:42,274 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:59:42,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:59:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:59:42,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 107 conjunts are in the unsatisfiable core [2022-12-13 17:59:42,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:59:42,805 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:59:42,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2022-12-13 17:59:43,089 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:59:43,096 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:59:43,273 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2567 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2567))) (exists ((v_ArrVal_2566 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2566)))) is different from true [2022-12-13 17:59:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 181 proven. 4 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-12-13 17:59:43,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:59:44,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2022-12-13 17:59:44,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:59:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159478316] [2022-12-13 17:59:44,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:59:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527711990] [2022-12-13 17:59:44,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527711990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:59:44,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:59:44,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-12-13 17:59:44,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594138748] [2022-12-13 17:59:44,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:59:44,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 17:59:44,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:59:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 17:59:44,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=677, Unknown=5, NotChecked=52, Total=812 [2022-12-13 17:59:44,425 INFO L87 Difference]: Start difference. First operand 1223 states and 1821 transitions. Second operand has 25 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 21 states have internal predecessors, (87), 7 states have call successors, (31), 7 states have call predecessors, (31), 8 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-13 17:59:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:59:56,104 INFO L93 Difference]: Finished difference Result 2551 states and 3748 transitions. [2022-12-13 17:59:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 17:59:56,104 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 21 states have internal predecessors, (87), 7 states have call successors, (31), 7 states have call predecessors, (31), 8 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 242 [2022-12-13 17:59:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:59:56,109 INFO L225 Difference]: With dead ends: 2551 [2022-12-13 17:59:56,110 INFO L226 Difference]: Without dead ends: 1797 [2022-12-13 17:59:56,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 405 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=556, Invalid=4527, Unknown=33, NotChecked=140, Total=5256 [2022-12-13 17:59:56,112 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 844 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 5442 mSolverCounterSat, 748 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 6776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 5442 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:59:56,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1483 Invalid, 6776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 5442 Invalid, 37 Unknown, 549 Unchecked, 9.4s Time] [2022-12-13 17:59:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-12-13 17:59:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1579. [2022-12-13 17:59:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 971 states have (on average 1.149330587023687) internal successors, (1116), 996 states have internal predecessors, (1116), 429 states have call successors, (429), 168 states have call predecessors, (429), 178 states have return successors, (723), 414 states have call predecessors, (723), 416 states have call successors, (723) [2022-12-13 17:59:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2268 transitions. [2022-12-13 17:59:56,273 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2268 transitions. Word has length 242 [2022-12-13 17:59:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:59:56,273 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 2268 transitions. [2022-12-13 17:59:56,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 21 states have internal predecessors, (87), 7 states have call successors, (31), 7 states have call predecessors, (31), 8 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-13 17:59:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2268 transitions. [2022-12-13 17:59:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 17:59:56,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:59:56,277 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:59:56,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 17:59:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:59:56,478 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:59:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:59:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1179423996, now seen corresponding path program 1 times [2022-12-13 17:59:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:59:56,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540202137] [2022-12-13 17:59:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:59:56,570 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:59:56,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993273405] [2022-12-13 17:59:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:56,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:59:56,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:59:56,571 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:59:56,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:59:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:59:57,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3159 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-13 17:59:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:59:57,242 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:59:57,242 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 17:59:57,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 17:59:57,344 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 17:59:57,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 17:59:57,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:59:57,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 17:59:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:59:57,682 INFO L321 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-12-13 17:59:57,683 INFO L350 Elim1Store]: Elim1 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 9 case distinctions, treesize of input 46 treesize of output 69 [2022-12-13 17:59:58,391 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 24 [2022-12-13 17:59:58,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-13 17:59:58,472 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:59:58,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:59:58,560 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 17:59:58,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 17:59:58,842 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2795 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2795))) is different from true [2022-12-13 17:59:59,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:59:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 304 proven. 47 refuted. 3 times theorem prover too weak. 185 trivial. 7 not checked. [2022-12-13 17:59:59,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:59:59,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:59:59,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540202137] [2022-12-13 17:59:59,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:59:59,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993273405] [2022-12-13 17:59:59,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993273405] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:59:59,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:59:59,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-12-13 17:59:59,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56546082] [2022-12-13 17:59:59,397 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:59:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 17:59:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:59:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 17:59:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=807, Unknown=27, NotChecked=118, Total=1056 [2022-12-13 17:59:59,399 INFO L87 Difference]: Start difference. First operand 1579 states and 2268 transitions. Second operand has 32 states, 28 states have (on average 4.035714285714286) internal successors, (113), 29 states have internal predecessors, (113), 12 states have call successors, (34), 10 states have call predecessors, (34), 14 states have return successors, (33), 13 states have call predecessors, (33), 12 states have call successors, (33) [2022-12-13 18:00:02,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:03,927 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2788 Int) (|v___CPROVER_overflow_mult_~#c~1.base_335| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_335|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_335| v_ArrVal_2788)))) (exists ((|v_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base_BEFORE_CALL_40| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base_BEFORE_CALL_40|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base_BEFORE_CALL_40|))) (exists ((|bounded_malloc_#res.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|bounded_malloc_#res.base| Int) (|v_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base_BEFORE_CALL_44| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base_BEFORE_CALL_44|) 1) (= (select |c_#valid| |bounded_malloc_#res.base|) 1) (<= (+ |bounded_malloc_#res.base| 2) |v_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base_BEFORE_CALL_44|)))) is different from true [2022-12-13 18:00:08,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:10,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:14,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:26,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:00:29,849 INFO L93 Difference]: Finished difference Result 3884 states and 5671 transitions. [2022-12-13 18:00:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-13 18:00:29,850 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.035714285714286) internal successors, (113), 29 states have internal predecessors, (113), 12 states have call successors, (34), 10 states have call predecessors, (34), 14 states have return successors, (33), 13 states have call predecessors, (33), 12 states have call successors, (33) Word has length 254 [2022-12-13 18:00:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:00:29,857 INFO L225 Difference]: With dead ends: 3884 [2022-12-13 18:00:29,857 INFO L226 Difference]: Without dead ends: 2668 [2022-12-13 18:00:29,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 360 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=735, Invalid=6021, Unknown=62, NotChecked=492, Total=7310 [2022-12-13 18:00:29,862 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1319 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 5758 mSolverCounterSat, 1427 mSolverCounterUnsat, 413 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 8810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1427 IncrementalHoareTripleChecker+Valid, 5758 IncrementalHoareTripleChecker+Invalid, 413 IncrementalHoareTripleChecker+Unknown, 1212 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:00:29,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1070 Invalid, 8810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1427 Valid, 5758 Invalid, 413 Unknown, 1212 Unchecked, 26.4s Time] [2022-12-13 18:00:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-12-13 18:00:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2311. [2022-12-13 18:00:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 1421 states have (on average 1.147079521463758) internal successors, (1630), 1477 states have internal predecessors, (1630), 596 states have call successors, (596), 273 states have call predecessors, (596), 293 states have return successors, (1084), 560 states have call predecessors, (1084), 581 states have call successors, (1084) [2022-12-13 18:00:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3310 transitions. [2022-12-13 18:00:30,159 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3310 transitions. Word has length 254 [2022-12-13 18:00:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:00:30,160 INFO L495 AbstractCegarLoop]: Abstraction has 2311 states and 3310 transitions. [2022-12-13 18:00:30,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.035714285714286) internal successors, (113), 29 states have internal predecessors, (113), 12 states have call successors, (34), 10 states have call predecessors, (34), 14 states have return successors, (33), 13 states have call predecessors, (33), 12 states have call successors, (33) [2022-12-13 18:00:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3310 transitions. [2022-12-13 18:00:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-13 18:00:30,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:00:30,162 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:00:30,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 18:00:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:00:30,364 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:00:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:00:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 295106992, now seen corresponding path program 1 times [2022-12-13 18:00:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:00:30,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622204137] [2022-12-13 18:00:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:00:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:00:30,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:00:30,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103136076] [2022-12-13 18:00:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:00:30,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:00:30,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:00:30,435 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:00:30,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 18:00:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:00:31,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 3152 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 18:00:31,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:00:31,633 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3023 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3023)) |c_#memory_int|)) is different from true [2022-12-13 18:00:31,640 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3023 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3023)) |c_#memory_int|)) is different from true [2022-12-13 18:00:31,655 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 18:00:31,765 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3025 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3025)))) is different from true [2022-12-13 18:00:31,915 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3025 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3025))))) is different from true [2022-12-13 18:00:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 25 not checked. [2022-12-13 18:00:31,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:00:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:00:32,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622204137] [2022-12-13 18:00:32,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:00:32,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103136076] [2022-12-13 18:00:32,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103136076] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:00:32,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:00:32,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-12-13 18:00:32,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213435828] [2022-12-13 18:00:32,130 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 18:00:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 18:00:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:00:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 18:00:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=253, Unknown=11, NotChecked=140, Total=462 [2022-12-13 18:00:32,131 INFO L87 Difference]: Start difference. First operand 2311 states and 3310 transitions. Second operand has 21 states, 19 states have (on average 6.052631578947368) internal successors, (115), 21 states have internal predecessors, (115), 10 states have call successors, (33), 4 states have call predecessors, (33), 8 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2022-12-13 18:00:32,652 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3025 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3025)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3023 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3023)) |c_#memory_int|))) is different from true [2022-12-13 18:00:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:00:38,858 INFO L93 Difference]: Finished difference Result 5374 states and 7748 transitions. [2022-12-13 18:00:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 18:00:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.052631578947368) internal successors, (115), 21 states have internal predecessors, (115), 10 states have call successors, (33), 4 states have call predecessors, (33), 8 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) Word has length 248 [2022-12-13 18:00:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:00:38,870 INFO L225 Difference]: With dead ends: 5374 [2022-12-13 18:00:38,870 INFO L226 Difference]: Without dead ends: 3952 [2022-12-13 18:00:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 274 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=291, Invalid=1357, Unknown=12, NotChecked=410, Total=2070 [2022-12-13 18:00:38,874 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 351 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 4542 mSolverCounterSat, 415 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 7198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 4542 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 2218 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:00:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1618 Invalid, 7198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 4542 Invalid, 23 Unknown, 2218 Unchecked, 5.0s Time] [2022-12-13 18:00:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-12-13 18:00:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3821. [2022-12-13 18:00:39,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 2403 states have (on average 1.1431543903454016) internal successors, (2747), 2508 states have internal predecessors, (2747), 921 states have call successors, (921), 454 states have call predecessors, (921), 496 states have return successors, (1733), 858 states have call predecessors, (1733), 894 states have call successors, (1733) [2022-12-13 18:00:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5401 transitions. [2022-12-13 18:00:39,287 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5401 transitions. Word has length 248 [2022-12-13 18:00:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:00:39,288 INFO L495 AbstractCegarLoop]: Abstraction has 3821 states and 5401 transitions. [2022-12-13 18:00:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.052631578947368) internal successors, (115), 21 states have internal predecessors, (115), 10 states have call successors, (33), 4 states have call predecessors, (33), 8 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2022-12-13 18:00:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5401 transitions. [2022-12-13 18:00:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 18:00:39,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:00:39,291 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:00:39,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 18:00:39,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:00:39,493 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:00:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:00:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash -910064772, now seen corresponding path program 1 times [2022-12-13 18:00:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:00:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746378777] [2022-12-13 18:00:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:00:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:00:39,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:00:39,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212752437] [2022-12-13 18:00:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:00:39,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:00:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:00:39,583 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:00:39,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 18:00:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:00:40,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 3159 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-13 18:00:40,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:00:40,171 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 18:00:40,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2022-12-13 18:00:40,464 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 24 [2022-12-13 18:00:40,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:00:40,553 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 18:00:40,596 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 18:00:40,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-12-13 18:00:40,764 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3245 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3245) |c_#memory_int|)) is different from true [2022-12-13 18:00:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 194 proven. 4 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-12-13 18:00:40,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:00:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:00:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746378777] [2022-12-13 18:00:41,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:00:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212752437] [2022-12-13 18:00:41,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212752437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:00:41,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:00:41,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-12-13 18:00:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355238324] [2022-12-13 18:00:41,286 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 18:00:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 18:00:41,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:00:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 18:00:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=465, Unknown=7, NotChecked=44, Total=600 [2022-12-13 18:00:41,287 INFO L87 Difference]: Start difference. First operand 3821 states and 5401 transitions. Second operand has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 20 states have internal predecessors, (93), 8 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2022-12-13 18:00:43,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:48,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:00:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:00:56,401 INFO L93 Difference]: Finished difference Result 8229 states and 11765 transitions. [2022-12-13 18:00:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 18:00:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 20 states have internal predecessors, (93), 8 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) Word has length 254 [2022-12-13 18:00:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:00:56,433 INFO L225 Difference]: With dead ends: 8229 [2022-12-13 18:00:56,433 INFO L226 Difference]: Without dead ends: 4638 [2022-12-13 18:00:56,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 426 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=396, Invalid=2447, Unknown=23, NotChecked=104, Total=2970 [2022-12-13 18:00:56,451 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 627 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 5161 mSolverCounterSat, 547 mSolverCounterUnsat, 152 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 5161 IncrementalHoareTripleChecker+Invalid, 152 IncrementalHoareTripleChecker+Unknown, 653 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:00:56,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1144 Invalid, 6513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 5161 Invalid, 152 Unknown, 653 Unchecked, 13.3s Time] [2022-12-13 18:00:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2022-12-13 18:00:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 3750. [2022-12-13 18:00:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 2364 states have (on average 1.1412859560067683) internal successors, (2698), 2455 states have internal predecessors, (2698), 893 states have call successors, (893), 454 states have call predecessors, (893), 492 states have return successors, (1668), 840 states have call predecessors, (1668), 863 states have call successors, (1668) [2022-12-13 18:00:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5259 transitions. [2022-12-13 18:00:56,951 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5259 transitions. Word has length 254 [2022-12-13 18:00:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:00:56,951 INFO L495 AbstractCegarLoop]: Abstraction has 3750 states and 5259 transitions. [2022-12-13 18:00:56,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 20 states have internal predecessors, (93), 8 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2022-12-13 18:00:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5259 transitions. [2022-12-13 18:00:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-13 18:00:56,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:00:56,955 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:00:56,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 18:00:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:00:57,157 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:00:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:00:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1525407504, now seen corresponding path program 2 times [2022-12-13 18:00:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:00:57,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298781340] [2022-12-13 18:00:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:00:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:00:57,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:00:57,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034778941] [2022-12-13 18:00:57,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:00:57,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:00:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:00:57,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:00:57,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481da20b-9e64-4851-9f31-dbf3c3ad2cfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 18:00:59,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:00:59,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:00:59,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 3152 conjuncts, 460 conjunts are in the unsatisfiable core [2022-12-13 18:00:59,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:00:59,691 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 18:00:59,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2022-12-13 18:00:59,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 18:00:59,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 18:00:59,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 18:00:59,973 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2022-12-13 18:00:59,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 18:01:00,086 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 18:01:00,093 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 26 [2022-12-13 18:01:00,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:00,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 18:01:00,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:00,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-13 18:01:00,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 18:01:00,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 18:01:00,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 18:01:09,578 INFO L321 Elim1Store]: treesize reduction 202, result has 38.6 percent of original size [2022-12-13 18:01:09,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 176 treesize of output 317 [2022-12-13 18:01:09,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:09,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:09,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 168 [2022-12-13 18:01:09,861 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 18:01:09,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 143 [2022-12-13 18:01:10,030 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 18:01:10,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 137 [2022-12-13 18:01:21,302 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:21,331 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:21,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 75 [2022-12-13 18:01:21,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 18:01:21,880 INFO L321 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2022-12-13 18:01:21,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 80 [2022-12-13 18:01:21,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-12-13 18:01:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:21,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:21,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 18:01:22,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:01:22,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-13 18:01:22,143 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:22,337 INFO L321 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2022-12-13 18:01:22,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 63 [2022-12-13 18:01:22,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2022-12-13 18:01:22,355 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:22,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-13 18:01:22,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 18:01:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:23,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-13 18:01:23,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 18:01:23,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:23,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-13 18:01:23,176 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:23,489 INFO L321 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2022-12-13 18:01:23,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 80 [2022-12-13 18:01:23,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-12-13 18:01:23,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:23,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 18:01:24,056 INFO L321 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2022-12-13 18:01:24,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 80 [2022-12-13 18:01:24,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-12-13 18:01:24,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:24,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:24,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 18:01:24,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:01:24,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-13 18:01:24,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 18:01:24,895 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-12-13 18:01:24,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 31 [2022-12-13 18:01:24,913 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:25,078 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:25,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:25,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:25,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:25,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:25,358 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:25,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:25,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:25,771 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:25,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:26,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:01:26,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:26,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:26,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:26,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:26,396 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-13 18:01:26,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-13 18:01:26,406 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:26,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:01:26,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:26,886 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:26,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:27,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:27,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:27,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:27,335 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-13 18:01:27,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-13 18:01:27,353 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:27,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:27,942 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-13 18:01:27,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-13 18:01:27,950 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:28,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:28,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:28,297 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:28,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:28,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:01:28,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:28,642 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:28,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:28,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:28,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:28,981 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-12-13 18:01:28,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 31 [2022-12-13 18:01:28,995 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:29,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:29,099 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-13 18:01:29,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-13 18:01:29,107 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:29,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:29,227 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:29,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:29,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:29,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:29,794 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 18:01:29,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:30,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:01:30,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-13 18:01:30,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 1 [2022-12-13 18:01:32,656 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 18:01:35,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:35,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:35,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 18:01:36,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:36,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:36,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 18:01:44,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:44,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:01:44,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 18:05:24,507 WARN L233 SmtUtils]: Spent 3.62m on a formula simplification. DAG size of input: 639 DAG size of output: 562 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)