./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/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 5c5bc09aedc991d1ae460ef4df59ef2a54e22ab9e059fdab2288e6d08fc4b4be --- 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 15:32:38,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:32:38,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:32:38,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:32:38,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:32:38,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:32:38,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:32:38,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:32:38,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:32:38,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:32:38,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:32:38,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:32:38,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:32:38,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:32:38,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:32:38,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:32:38,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:32:38,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:32:38,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:32:38,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:32:38,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:32:38,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:32:38,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:32:38,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:32:38,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:32:38,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:32:38,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:32:38,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:32:38,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:32:38,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:32:38,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:32:38,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:32:38,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:32:38,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:32:38,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:32:38,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:32:38,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:32:38,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:32:38,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:32:38,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:32:38,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:32:38,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 15:32:38,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:32:38,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:32:38,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:32:38,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:32:38,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:32:38,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:32:38,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:32:38,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:32:38,077 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:32:38,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:32:38,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:32:38,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:32:38,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:32:38,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:32:38,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:32:38,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:32:38,080 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:32:38,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:32:38,080 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:32:38,080 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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c5bc09aedc991d1ae460ef4df59ef2a54e22ab9e059fdab2288e6d08fc4b4be [2022-12-13 15:32:38,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:32:38,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:32:38,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:32:38,288 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:32:38,288 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:32:38,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i [2022-12-13 15:32:40,888 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:32:41,166 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:32:41,167 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i [2022-12-13 15:32:41,184 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/data/b3832b017/3ddda8f14c88485c96ba910637deaf2b/FLAGf2054b22e [2022-12-13 15:32:41,197 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/data/b3832b017/3ddda8f14c88485c96ba910637deaf2b [2022-12-13 15:32:41,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:32:41,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:32:41,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:32:41,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:32:41,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:32:41,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:32:41" (1/1) ... [2022-12-13 15:32:41,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b636144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:41, skipping insertion in model container [2022-12-13 15:32:41,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:32:41" (1/1) ... [2022-12-13 15:32:41,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:32:41,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:32:41,503 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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4493,4506] [2022-12-13 15:32:41,512 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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4553,4566] [2022-12-13 15:32:42,208 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 15:32:42,264 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,269 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,269 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,270 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,270 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,271 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,273 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,281 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,281 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,281 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,283 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,283 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,285 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,285 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,286 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,286 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,286 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,354 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 15:32:42,354 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 15:32:42,355 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 15:32:42,358 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 15:32:42,360 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 15:32:42,360 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 15:32:42,594 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 15:32:42,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 15:32:42,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 15:32:42,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 15:32:42,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 15:32:42,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 15:32:42,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 15:32:42,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 15:32:42,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 15:32:42,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 15:32:42,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 15:32:42,726 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,727 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,730 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,732 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,734 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,735 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,736 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,738 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,741 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,741 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,741 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,742 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,742 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,742 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,771 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:32:42,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:32:42,796 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:32:42,806 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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4493,4506] [2022-12-13 15:32:42,806 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_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4553,4566] [2022-12-13 15:32:42,830 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 15:32:42,840 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,843 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,843 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,844 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,844 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,845 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,846 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,850 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,851 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,851 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,852 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,852 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,853 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,854 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,854 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,854 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,854 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,860 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 15:32:42,860 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 15:32:42,861 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 15:32:42,863 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 15:32:42,864 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 15:32:42,864 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 15:32:42,880 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 15:32:42,881 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 15:32:42,881 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 15:32:42,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 15:32:42,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 15:32:42,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 15:32:42,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 15:32:42,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 15:32:42,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 15:32:42,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 15:32:42,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 15:32:42,902 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,902 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,903 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,904 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,905 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,906 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,907 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 15:32:42,908 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,909 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,909 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,909 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,910 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,910 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,910 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 15:32:42,921 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:32:42,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:32:43,057 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:32:43,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43 WrapperNode [2022-12-13 15:32:43,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:32:43,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:32:43,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:32:43,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:32:43,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,142 INFO L138 Inliner]: procedures = 691, calls = 1672, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 694 [2022-12-13 15:32:43,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:32:43,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:32:43,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:32:43,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:32:43,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:32:43,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:32:43,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:32:43,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:32:43,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (1/1) ... [2022-12-13 15:32:43,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:32:43,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:43,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:32:43,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:32:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:32:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-12-13 15:32:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-12-13 15:32:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-13 15:32:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-13 15:32:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 15:32:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 15:32:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-12-13 15:32:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-12-13 15:32:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:32:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-13 15:32:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-13 15:32:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 15:32:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 15:32:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:32:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:32:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:32:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-12-13 15:32:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-12-13 15:32:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:32:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:32:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 15:32:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 15:32:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-13 15:32:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-13 15:32:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-13 15:32:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-13 15:32:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-13 15:32:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-13 15:32:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 15:32:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 15:32:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-12-13 15:32:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-12-13 15:32:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-12-13 15:32:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-12-13 15:32:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:32:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 15:32:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 15:32:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 15:32:43,274 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 15:32:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-13 15:32:43,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-13 15:32:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:32:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-12-13 15:32:43,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-12-13 15:32:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:32:43,499 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:32:43,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:32:44,172 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:32:44,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:32:44,177 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:32:44,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:32:44 BoogieIcfgContainer [2022-12-13 15:32:44,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:32:44,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:32:44,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:32:44,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:32:44,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:32:41" (1/3) ... [2022-12-13 15:32:44,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be9c1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:32:44, skipping insertion in model container [2022-12-13 15:32:44,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:32:43" (2/3) ... [2022-12-13 15:32:44,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be9c1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:32:44, skipping insertion in model container [2022-12-13 15:32:44,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:32:44" (3/3) ... [2022-12-13 15:32:44,185 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness_negated.i [2022-12-13 15:32:44,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:32:44,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:32:44,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:32:44,242 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;@794ddc77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:32:44,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:32:44,246 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 15:32:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 15:32:44,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:44,270 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 15:32:44,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-12-13 15:32:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:44,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158805995] [2022-12-13 15:32:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:44,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158805995] [2022-12-13 15:32:44,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:32:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801392406] [2022-12-13 15:32:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:44,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:44,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:44,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:32:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:45,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:32:45,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:45,179 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 15:32:45,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:45,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801392406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:45,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:45,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:32:45,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117893546] [2022-12-13 15:32:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:32:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:32:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:32:45,212 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 15:32:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:45,634 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-12-13 15:32:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:32:45,637 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 15:32:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:45,649 INFO L225 Difference]: With dead ends: 416 [2022-12-13 15:32:45,649 INFO L226 Difference]: Without dead ends: 206 [2022-12-13 15:32:45,654 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 15:32:45,657 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 277 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 15:32:45,658 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 15:32:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-13 15:32:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-12-13 15:32:45,719 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 15:32:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-12-13 15:32:45,724 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-12-13 15:32:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:45,724 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-12-13 15:32:45,725 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 15:32:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-12-13 15:32:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 15:32:45,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:45,730 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 15:32:45,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:32:45,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:45,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-12-13 15:32:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:45,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757435836] [2022-12-13 15:32:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:45,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:45,997 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444516036] [2022-12-13 15:32:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:45,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:45,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:32:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:46,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:32:46,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:46,366 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 15:32:46,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:46,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:46,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757435836] [2022-12-13 15:32:46,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:46,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444516036] [2022-12-13 15:32:46,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444516036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:46,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:46,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:32:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452565765] [2022-12-13 15:32:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:46,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:32:46,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:32:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:32:46,369 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 15:32:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:46,405 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-12-13 15:32:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:32:46,406 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 15:32:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:46,407 INFO L225 Difference]: With dead ends: 410 [2022-12-13 15:32:46,407 INFO L226 Difference]: Without dead ends: 211 [2022-12-13 15:32:46,408 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 15:32:46,409 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 15:32:46,410 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 15:32:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-13 15:32:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-12-13 15:32:46,423 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 15:32:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-12-13 15:32:46,425 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-12-13 15:32:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:46,425 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-12-13 15:32:46,425 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 15:32:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-12-13 15:32:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 15:32:46,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:46,427 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 15:32:46,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:32:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 15:32:46,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-12-13 15:32:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:46,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959170504] [2022-12-13 15:32:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:46,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:46,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162971198] [2022-12-13 15:32:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:46,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:46,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:32:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:47,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:32:47,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:47,145 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 15:32:47,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:47,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:47,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959170504] [2022-12-13 15:32:47,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:47,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162971198] [2022-12-13 15:32:47,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162971198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:47,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:47,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:32:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956765707] [2022-12-13 15:32:47,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:47,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:32:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:32:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:32:47,147 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 15:32:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:47,409 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-12-13 15:32:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:32:47,409 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 15:32:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:47,411 INFO L225 Difference]: With dead ends: 383 [2022-12-13 15:32:47,411 INFO L226 Difference]: Without dead ends: 208 [2022-12-13 15:32:47,411 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 15:32:47,412 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 15:32:47,412 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 15:32:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-13 15:32:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-12-13 15:32:47,424 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 15:32:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-12-13 15:32:47,425 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-12-13 15:32:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:47,426 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-12-13 15:32:47,426 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 15:32:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-12-13 15:32:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 15:32:47,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:47,428 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 15:32:47,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:32:47,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:47,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-12-13 15:32:47,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:47,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792496421] [2022-12-13 15:32:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:47,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:47,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:47,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164893030] [2022-12-13 15:32:47,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:32:47,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:47,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:47,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:32:48,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:32:48,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:32:48,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:32:48,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:48,052 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 15:32:48,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:48,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792496421] [2022-12-13 15:32:48,053 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164893030] [2022-12-13 15:32:48,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164893030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:48,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:48,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:32:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86440840] [2022-12-13 15:32:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:32:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:32:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:32:48,055 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 15:32:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:48,086 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-12-13 15:32:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:32:48,087 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 15:32:48,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:48,090 INFO L225 Difference]: With dead ends: 269 [2022-12-13 15:32:48,090 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 15:32:48,091 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 15:32:48,092 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 15:32:48,092 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 15:32:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 15:32:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-12-13 15:32:48,111 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 15:32:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-12-13 15:32:48,114 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-12-13 15:32:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:48,115 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-12-13 15:32:48,115 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 15:32:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-12-13 15:32:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-13 15:32:48,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:48,118 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 15:32:48,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 15:32:48,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:48,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:48,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-12-13 15:32:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:48,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038387553] [2022-12-13 15:32:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:48,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:48,422 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:48,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534370331] [2022-12-13 15:32:48,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:48,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:48,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:48,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:48,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:32:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:48,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:32:48,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:48,804 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 15:32:48,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:48,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038387553] [2022-12-13 15:32:48,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:48,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534370331] [2022-12-13 15:32:48,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534370331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:48,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:48,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:32:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902166858] [2022-12-13 15:32:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:48,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:32:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:32:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:32:48,807 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 15:32:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:49,107 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-12-13 15:32:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:32:49,108 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 15:32:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:49,109 INFO L225 Difference]: With dead ends: 382 [2022-12-13 15:32:49,109 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 15:32:49,110 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 15:32:49,110 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 15:32:49,111 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 15:32:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 15:32:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-12-13 15:32:49,119 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 15:32:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-12-13 15:32:49,125 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-12-13 15:32:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:49,126 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-12-13 15:32:49,126 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 15:32:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-12-13 15:32:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 15:32:49,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:49,128 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 15:32:49,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:32:49,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:49,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-12-13 15:32:49,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:49,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301690844] [2022-12-13 15:32:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:49,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:49,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:49,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775531207] [2022-12-13 15:32:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:49,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:49,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:49,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:49,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:32:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:32:49,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:49,842 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 15:32:49,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:49,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:49,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301690844] [2022-12-13 15:32:49,842 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:49,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775531207] [2022-12-13 15:32:49,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775531207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:49,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:49,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:32:49,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293700774] [2022-12-13 15:32:49,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:49,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:32:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:32:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:32:49,844 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 15:32:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:50,143 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-12-13 15:32:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:32:50,143 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 15:32:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:50,144 INFO L225 Difference]: With dead ends: 379 [2022-12-13 15:32:50,144 INFO L226 Difference]: Without dead ends: 211 [2022-12-13 15:32:50,145 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 15:32:50,146 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:32:50,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 15:32:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-13 15:32:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-12-13 15:32:50,158 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 15:32:50,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-12-13 15:32:50,159 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-12-13 15:32:50,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:50,159 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-12-13 15:32:50,160 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 15:32:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-12-13 15:32:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-12-13 15:32:50,161 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:50,162 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 15:32:50,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 15:32:50,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:50,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-12-13 15:32:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:50,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107727539] [2022-12-13 15:32:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:50,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:50,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658977556] [2022-12-13 15:32:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:50,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:50,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:50,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:50,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:32:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:50,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:32:50,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:50,842 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 15:32:50,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:32:50,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:50,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107727539] [2022-12-13 15:32:50,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:50,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658977556] [2022-12-13 15:32:50,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658977556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:50,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:50,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:32:50,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542306896] [2022-12-13 15:32:50,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:50,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:32:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:32:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:32:50,845 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 15:32:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:32:50,876 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-12-13 15:32:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:32:50,877 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 15:32:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:32:50,879 INFO L225 Difference]: With dead ends: 269 [2022-12-13 15:32:50,879 INFO L226 Difference]: Without dead ends: 220 [2022-12-13 15:32:50,879 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 15:32:50,880 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 15:32:50,880 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 15:32:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-13 15:32:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-12-13 15:32:50,888 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 15:32:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-12-13 15:32:50,889 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-12-13 15:32:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:32:50,889 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-12-13 15:32:50,889 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 15:32:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-12-13 15:32:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 15:32:50,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:32:50,891 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 15:32:50,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:32:51,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:51,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:32:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-12-13 15:32:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:51,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266484793] [2022-12-13 15:32:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:51,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:51,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:32:51,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114850513] [2022-12-13 15:32:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:32:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:32:51,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:32:51,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:32:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:51,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 120 conjunts are in the unsatisfiable core [2022-12-13 15:32:51,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:32:51,692 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 15:32:52,310 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_970 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_970))) (exists ((v_ArrVal_971 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_971) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 15:32:52,330 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 15:32:52,336 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 15:32:52,438 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_974 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_974)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_975 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_975))))) is different from true [2022-12-13 15:32:52,455 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_975 Int) (v_ArrVal_974 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_975)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_974)) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 15:32:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:32:52,492 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 15:32:52,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:32:52,496 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 15:32:52,686 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 15 treesize of output 7 [2022-12-13 15:32:52,689 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 15 treesize of output 7 [2022-12-13 15:32:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 328 proven. 35 refuted. 0 times theorem prover too weak. 144 trivial. 7 not checked. [2022-12-13 15:32:52,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:32:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:53,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266484793] [2022-12-13 15:32:53,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:53,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114850513] [2022-12-13 15:32:53,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114850513] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:32:53,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:32:53,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-12-13 15:32:53,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268228642] [2022-12-13 15:32:53,255 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:32:53,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 15:32:53,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 15:32:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=724, Unknown=3, NotChecked=168, Total=992 [2022-12-13 15:32:53,258 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 25 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 12 states have call successors, (32), 4 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-12-13 15:33:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:33:04,283 INFO L93 Difference]: Finished difference Result 490 states and 680 transitions. [2022-12-13 15:33:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 15:33:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 12 states have call successors, (32), 4 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 226 [2022-12-13 15:33:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:33:04,286 INFO L225 Difference]: With dead ends: 490 [2022-12-13 15:33:04,286 INFO L226 Difference]: Without dead ends: 284 [2022-12-13 15:33:04,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 317 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=364, Invalid=2831, Unknown=9, NotChecked=336, Total=3540 [2022-12-13 15:33:04,287 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 172 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1197 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:33:04,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1827 Invalid, 4722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3417 Invalid, 0 Unknown, 1197 Unchecked, 2.4s Time] [2022-12-13 15:33:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-13 15:33:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2022-12-13 15:33:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 158 states have (on average 1.1518987341772151) internal successors, (182), 161 states have internal predecessors, (182), 82 states have call successors, (82), 25 states have call predecessors, (82), 26 states have return successors, (114), 80 states have call predecessors, (114), 81 states have call successors, (114) [2022-12-13 15:33:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 378 transitions. [2022-12-13 15:33:04,303 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 378 transitions. Word has length 226 [2022-12-13 15:33:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:33:04,304 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 378 transitions. [2022-12-13 15:33:04,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 12 states have call successors, (32), 4 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-12-13 15:33:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 378 transitions. [2022-12-13 15:33:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-12-13 15:33:04,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:33:04,305 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 15:33:04,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:33:04,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:33:04,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:33:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:33:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 1 times [2022-12-13 15:33:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:33:04,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539631608] [2022-12-13 15:33:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:33:04,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:33:04,606 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:33:04,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172940680] [2022-12-13 15:33:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:33:04,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:33:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:33:04,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:33:04,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:33:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:33:04,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 15:33:04,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:33:05,021 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 15:33:05,079 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 15:33:05,167 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1194 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1194)) |c_#memory_$Pointer$.base|)) is different from true [2022-12-13 15:33:13,348 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 15:33:13,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:33:13,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:33:13,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539631608] [2022-12-13 15:33:13,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:33:13,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172940680] [2022-12-13 15:33:13,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172940680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:33:13,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:33:13,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-13 15:33:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823986156] [2022-12-13 15:33:13,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:33:13,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 15:33:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:33:13,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 15:33:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-12-13 15:33:13,351 INFO L87 Difference]: Start difference. First operand 267 states and 378 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 15:33:16,354 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 15:33:18,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:20,621 WARN L539 Checker$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 15:33:22,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:24,768 WARN L539 Checker$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 15:33:26,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:28,824 WARN L539 Checker$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 15:33:32,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:34,885 WARN L539 Checker$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 15:33:38,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:40,940 WARN L539 Checker$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 15:33:44,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:46,986 WARN L539 Checker$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 15:33:48,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:51,037 WARN L539 Checker$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 15:33:53,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:33:55,065 WARN L539 Checker$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 15:33:57,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:34:07,151 WARN L539 Checker$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 15:34:17,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:34:27,334 WARN L539 Checker$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 15:34:49,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:01,963 WARN L539 Checker$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 15:35:04,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:06,039 WARN L539 Checker$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 15:35:08,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:10,147 WARN L539 Checker$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 15:35:12,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:13,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:15,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:17,980 WARN L539 Checker$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 15:35:19,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:21,577 WARN L539 Checker$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 15:35:23,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:25,892 WARN L539 Checker$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 15:35:28,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:30,327 WARN L539 Checker$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 15:35:32,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:34,515 WARN L539 Checker$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 15:35:36,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:38,839 WARN L539 Checker$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 15:35:40,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:42,901 WARN L539 Checker$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 15:35:44,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:47,069 WARN L539 Checker$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 15:35:49,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:51,099 WARN L539 Checker$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 15:35:53,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:55,246 WARN L539 Checker$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 15:35:57,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:35:59,545 WARN L539 Checker$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 15:36:01,561 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 15:36:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:01,722 INFO L93 Difference]: Finished difference Result 615 states and 901 transitions. [2022-12-13 15:36:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 15:36:01,723 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 15:36:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:01,724 INFO L225 Difference]: With dead ends: 615 [2022-12-13 15:36:01,724 INFO L226 Difference]: Without dead ends: 421 [2022-12-13 15:36:01,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=250, Invalid=1265, Unknown=49, NotChecked=76, Total=1640 [2022-12-13 15:36:01,726 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 234 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 129 mSolverCounterUnsat, 157 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 157 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 107.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:01,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1597 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3330 Invalid, 157 Unknown, 519 Unchecked, 107.5s Time] [2022-12-13 15:36:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-12-13 15:36:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 358. [2022-12-13 15:36:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 215 states have (on average 1.1488372093023256) internal successors, (247), 222 states have internal predecessors, (247), 102 states have call successors, (102), 39 states have call predecessors, (102), 40 states have return successors, (155), 96 states have call predecessors, (155), 101 states have call successors, (155) [2022-12-13 15:36:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 504 transitions. [2022-12-13 15:36:01,758 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 504 transitions. Word has length 232 [2022-12-13 15:36:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:01,759 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 504 transitions. [2022-12-13 15:36:01,759 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 15:36:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 504 transitions. [2022-12-13 15:36:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-12-13 15:36:01,760 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:01,761 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:01,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 15:36:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:01,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1304057108, now seen corresponding path program 1 times [2022-12-13 15:36:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:01,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164140368] [2022-12-13 15:36:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:02,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:02,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066338989] [2022-12-13 15:36:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:02,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:02,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:36:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:02,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 15:36:02,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-12-13 15:36:02,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:36:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:02,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164140368] [2022-12-13 15:36:02,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:02,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066338989] [2022-12-13 15:36:02,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066338989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:02,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:02,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:36:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051598447] [2022-12-13 15:36:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:36:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:36:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:36:02,462 INFO L87 Difference]: Start difference. First operand 358 states and 504 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-13 15:36:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:02,718 INFO L93 Difference]: Finished difference Result 662 states and 992 transitions. [2022-12-13 15:36:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:36:02,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 228 [2022-12-13 15:36:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:02,721 INFO L225 Difference]: With dead ends: 662 [2022-12-13 15:36:02,721 INFO L226 Difference]: Without dead ends: 373 [2022-12-13 15:36:02,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:36:02,723 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 10 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1055 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 15:36:02,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1055 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:36:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-12-13 15:36:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 361. [2022-12-13 15:36:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 218 states have (on average 1.146788990825688) internal successors, (250), 225 states have internal predecessors, (250), 102 states have call successors, (102), 39 states have call predecessors, (102), 40 states have return successors, (155), 96 states have call predecessors, (155), 101 states have call successors, (155) [2022-12-13 15:36:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 507 transitions. [2022-12-13 15:36:02,750 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 507 transitions. Word has length 228 [2022-12-13 15:36:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:02,750 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 507 transitions. [2022-12-13 15:36:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-13 15:36:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 507 transitions. [2022-12-13 15:36:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-12-13 15:36:02,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:02,752 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, 5, 5, 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] [2022-12-13 15:36:02,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 15:36:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:36:02,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash -417262830, now seen corresponding path program 1 times [2022-12-13 15:36:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:02,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641556917] [2022-12-13 15:36:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:03,004 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:03,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821724768] [2022-12-13 15:36:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:03,006 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:03,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:36:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:03,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 15:36:03,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-12-13 15:36:03,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:36:03,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:03,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641556917] [2022-12-13 15:36:03,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:03,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821724768] [2022-12-13 15:36:03,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821724768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:03,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:03,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:36:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164855834] [2022-12-13 15:36:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:36:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:36:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:36:03,522 INFO L87 Difference]: Start difference. First operand 361 states and 507 transitions. Second operand has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-13 15:36:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:03,791 INFO L93 Difference]: Finished difference Result 560 states and 799 transitions. [2022-12-13 15:36:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:36:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 252 [2022-12-13 15:36:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:03,795 INFO L225 Difference]: With dead ends: 560 [2022-12-13 15:36:03,795 INFO L226 Difference]: Without dead ends: 361 [2022-12-13 15:36:03,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:36:03,796 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 12 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:03,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3163 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:36:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-12-13 15:36:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-12-13 15:36:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 218 states have (on average 1.146788990825688) internal successors, (250), 225 states have internal predecessors, (250), 102 states have call successors, (102), 39 states have call predecessors, (102), 40 states have return successors, (152), 96 states have call predecessors, (152), 101 states have call successors, (152) [2022-12-13 15:36:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 504 transitions. [2022-12-13 15:36:03,816 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 504 transitions. Word has length 252 [2022-12-13 15:36:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:03,817 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 504 transitions. [2022-12-13 15:36:03,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-13 15:36:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 504 transitions. [2022-12-13 15:36:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-12-13 15:36:03,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:03,819 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, 4, 4, 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] [2022-12-13 15:36:03,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 15:36:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 15:36:04,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash -308063992, now seen corresponding path program 2 times [2022-12-13 15:36:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:04,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162891322] [2022-12-13 15:36:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:04,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:04,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:04,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349780510] [2022-12-13 15:36:04,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:36:04,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:04,069 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:04,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:36:04,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:36:04,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:36:04,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:36:04,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2022-12-13 15:36:04,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:36:04,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162891322] [2022-12-13 15:36:04,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349780510] [2022-12-13 15:36:04,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349780510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:04,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:04,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:36:04,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587586259] [2022-12-13 15:36:04,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:04,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:36:04,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:36:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:36:04,479 INFO L87 Difference]: Start difference. First operand 361 states and 504 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 4 states have call predecessors, (27), 1 states have call successors, (27) [2022-12-13 15:36:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:04,616 INFO L93 Difference]: Finished difference Result 369 states and 512 transitions. [2022-12-13 15:36:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:36:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 4 states have call predecessors, (27), 1 states have call successors, (27) Word has length 246 [2022-12-13 15:36:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:04,620 INFO L225 Difference]: With dead ends: 369 [2022-12-13 15:36:04,620 INFO L226 Difference]: Without dead ends: 367 [2022-12-13 15:36:04,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 235 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 15:36:04,621 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 14 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:04,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3194 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:36:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-12-13 15:36:04,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 366. [2022-12-13 15:36:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 221 states have (on average 1.1447963800904977) internal successors, (253), 228 states have internal predecessors, (253), 103 states have call successors, (103), 40 states have call predecessors, (103), 41 states have return successors, (153), 97 states have call predecessors, (153), 102 states have call successors, (153) [2022-12-13 15:36:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 509 transitions. [2022-12-13 15:36:04,640 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 509 transitions. Word has length 246 [2022-12-13 15:36:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:04,640 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 509 transitions. [2022-12-13 15:36:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 4 states have call predecessors, (27), 1 states have call successors, (27) [2022-12-13 15:36:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 509 transitions. [2022-12-13 15:36:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 15:36:04,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:04,642 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, 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] [2022-12-13 15:36:04,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:36:04,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 15:36:04,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 839763518, now seen corresponding path program 3 times [2022-12-13 15:36:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:04,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366592748] [2022-12-13 15:36:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:04,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:04,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:04,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465205784] [2022-12-13 15:36:04,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:36:04,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:04,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:04,904 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:04,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:36:06,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:36:06,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:36:06,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2292 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 15:36:06,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-12-13 15:36:06,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:36:06,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:06,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366592748] [2022-12-13 15:36:06,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:06,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465205784] [2022-12-13 15:36:06,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465205784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:06,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:06,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:36:06,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694620250] [2022-12-13 15:36:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:36:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:36:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:36:06,215 INFO L87 Difference]: Start difference. First operand 366 states and 509 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 10 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 15:36:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:06,436 INFO L93 Difference]: Finished difference Result 556 states and 778 transitions. [2022-12-13 15:36:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:36:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 10 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 240 [2022-12-13 15:36:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:06,438 INFO L225 Difference]: With dead ends: 556 [2022-12-13 15:36:06,438 INFO L226 Difference]: Without dead ends: 366 [2022-12-13 15:36:06,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:36:06,439 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 12 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:06,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2867 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:36:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-12-13 15:36:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-12-13 15:36:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 221 states have (on average 1.1447963800904977) internal successors, (253), 228 states have internal predecessors, (253), 103 states have call successors, (103), 40 states have call predecessors, (103), 41 states have return successors, (151), 97 states have call predecessors, (151), 102 states have call successors, (151) [2022-12-13 15:36:06,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 507 transitions. [2022-12-13 15:36:06,457 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 507 transitions. Word has length 240 [2022-12-13 15:36:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:06,458 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 507 transitions. [2022-12-13 15:36:06,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 10 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 15:36:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 507 transitions. [2022-12-13 15:36:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-12-13 15:36:06,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:06,459 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:06,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 15:36:06,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:06,661 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1642776618, now seen corresponding path program 4 times [2022-12-13 15:36:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:06,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254025098] [2022-12-13 15:36:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:06,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:06,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:06,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217429927] [2022-12-13 15:36:06,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:36:06,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:06,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:06,743 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:06,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 15:36:07,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:36:07,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:36:07,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 15:36:07,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:07,284 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:36:07,284 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 15:36:07,474 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 15:36:07,479 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 15:36:07,655 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1960 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1960))) (exists ((v_ArrVal_1959 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1959) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 15:36:08,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:36:08,028 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 36 treesize of output 28 [2022-12-13 15:36:08,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:36:08,032 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 15:36:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 208 proven. 8 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-12-13 15:36:08,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:36:08,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:08,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254025098] [2022-12-13 15:36:08,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:08,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217429927] [2022-12-13 15:36:08,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217429927] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:36:08,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:36:08,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-12-13 15:36:08,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458223185] [2022-12-13 15:36:08,706 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:36:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 15:36:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 15:36:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=733, Unknown=2, NotChecked=54, Total=870 [2022-12-13 15:36:08,708 INFO L87 Difference]: Start difference. First operand 366 states and 507 transitions. Second operand has 24 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-12-13 15:36:10,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:36:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:16,288 INFO L93 Difference]: Finished difference Result 785 states and 1071 transitions. [2022-12-13 15:36:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 15:36:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 228 [2022-12-13 15:36:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:16,293 INFO L225 Difference]: With dead ends: 785 [2022-12-13 15:36:16,293 INFO L226 Difference]: Without dead ends: 513 [2022-12-13 15:36:16,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 376 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=537, Invalid=4269, Unknown=28, NotChecked=136, Total=4970 [2022-12-13 15:36:16,294 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 473 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 367 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 4581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:16,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1405 Invalid, 4581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3793 Invalid, 36 Unknown, 385 Unchecked, 6.0s Time] [2022-12-13 15:36:16,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-12-13 15:36:16,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 404. [2022-12-13 15:36:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 252 states have (on average 1.1428571428571428) internal successors, (288), 260 states have internal predecessors, (288), 102 states have call successors, (102), 47 states have call predecessors, (102), 49 states have return successors, (155), 96 states have call predecessors, (155), 101 states have call successors, (155) [2022-12-13 15:36:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 545 transitions. [2022-12-13 15:36:16,318 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 545 transitions. Word has length 228 [2022-12-13 15:36:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:16,319 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 545 transitions. [2022-12-13 15:36:16,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-12-13 15:36:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 545 transitions. [2022-12-13 15:36:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-12-13 15:36:16,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:16,320 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, 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] [2022-12-13 15:36:16,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 15:36:16,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:16,522 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1296058134, now seen corresponding path program 1 times [2022-12-13 15:36:16,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:16,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322699785] [2022-12-13 15:36:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:16,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741135055] [2022-12-13 15:36:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:16,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:16,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:16,606 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:16,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 15:36:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 15:36:17,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:17,206 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:36:17,207 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 15:36:17,445 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 15:36:17,450 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 15:36:17,606 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2160 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2160))) (exists ((v_ArrVal_2161 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2161)))) is different from true [2022-12-13 15:36:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-12-13 15:36:18,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:36:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322699785] [2022-12-13 15:36:18,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741135055] [2022-12-13 15:36:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741135055] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:36:18,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:36:18,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-12-13 15:36:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427855377] [2022-12-13 15:36:18,697 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:36:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 15:36:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 15:36:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=4, NotChecked=58, Total=992 [2022-12-13 15:36:18,698 INFO L87 Difference]: Start difference. First operand 404 states and 545 transitions. Second operand has 26 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 7 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) [2022-12-13 15:36:20,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:36:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:30,321 INFO L93 Difference]: Finished difference Result 1002 states and 1387 transitions. [2022-12-13 15:36:30,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-13 15:36:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 7 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) Word has length 228 [2022-12-13 15:36:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:30,325 INFO L225 Difference]: With dead ends: 1002 [2022-12-13 15:36:30,325 INFO L226 Difference]: Without dead ends: 680 [2022-12-13 15:36:30,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 374 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=565, Invalid=4960, Unknown=29, NotChecked=146, Total=5700 [2022-12-13 15:36:30,328 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 616 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 6296 mSolverCounterSat, 554 mSolverCounterUnsat, 86 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 7581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 6296 IncrementalHoareTripleChecker+Invalid, 86 IncrementalHoareTripleChecker+Unknown, 645 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:30,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1539 Invalid, 7581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 6296 Invalid, 86 Unknown, 645 Unchecked, 9.9s Time] [2022-12-13 15:36:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-12-13 15:36:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 581. [2022-12-13 15:36:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 355 states have (on average 1.1464788732394366) internal successors, (407), 364 states have internal predecessors, (407), 158 states have call successors, (158), 64 states have call predecessors, (158), 67 states have return successors, (220), 152 states have call predecessors, (220), 156 states have call successors, (220) [2022-12-13 15:36:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 785 transitions. [2022-12-13 15:36:30,392 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 785 transitions. Word has length 228 [2022-12-13 15:36:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:30,393 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 785 transitions. [2022-12-13 15:36:30,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 7 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) [2022-12-13 15:36:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 785 transitions. [2022-12-13 15:36:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-12-13 15:36:30,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:30,396 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1] [2022-12-13 15:36:30,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 15:36:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:30,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1782810395, now seen corresponding path program 1 times [2022-12-13 15:36:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692421535] [2022-12-13 15:36:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:30,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:30,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:30,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180113063] [2022-12-13 15:36:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:30,703 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:30,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 15:36:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:36:31,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:31,202 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:36:31,203 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 15:36:31,500 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 15:36:31,511 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 15:36:31,604 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 15:36:31,650 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:36:31,651 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 15:36:31,823 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2382 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2382) |c_#memory_int|)) is different from true [2022-12-13 15:36:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-12-13 15:36:32,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:36:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692421535] [2022-12-13 15:36:32,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180113063] [2022-12-13 15:36:32,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180113063] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:36:32,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:36:32,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-12-13 15:36:32,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486438836] [2022-12-13 15:36:32,278 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:36:32,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 15:36:32,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 15:36:32,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=465, Unknown=7, NotChecked=44, Total=600 [2022-12-13 15:36:32,280 INFO L87 Difference]: Start difference. First operand 581 states and 785 transitions. Second operand has 24 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-12-13 15:36:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:36:40,450 INFO L93 Difference]: Finished difference Result 1413 states and 1975 transitions. [2022-12-13 15:36:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 15:36:40,451 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) Word has length 234 [2022-12-13 15:36:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:36:40,454 INFO L225 Difference]: With dead ends: 1413 [2022-12-13 15:36:40,454 INFO L226 Difference]: Without dead ends: 921 [2022-12-13 15:36:40,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 386 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=396, Invalid=2447, Unknown=23, NotChecked=104, Total=2970 [2022-12-13 15:36:40,456 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 614 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 5430 mSolverCounterSat, 634 mSolverCounterUnsat, 152 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 6854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 5430 IncrementalHoareTripleChecker+Invalid, 152 IncrementalHoareTripleChecker+Unknown, 638 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:36:40,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1120 Invalid, 6854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 5430 Invalid, 152 Unknown, 638 Unchecked, 7.1s Time] [2022-12-13 15:36:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-12-13 15:36:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 794. [2022-12-13 15:36:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 478 states have (on average 1.1569037656903767) internal successors, (553), 494 states have internal predecessors, (553), 221 states have call successors, (221), 92 states have call predecessors, (221), 94 states have return successors, (323), 207 states have call predecessors, (323), 218 states have call successors, (323) [2022-12-13 15:36:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1097 transitions. [2022-12-13 15:36:40,518 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1097 transitions. Word has length 234 [2022-12-13 15:36:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:36:40,518 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1097 transitions. [2022-12-13 15:36:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-12-13 15:36:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1097 transitions. [2022-12-13 15:36:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-12-13 15:36:40,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:36:40,521 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, 3, 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 15:36:40,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 15:36:40,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 15:36:40,721 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:36:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -225108523, now seen corresponding path program 1 times [2022-12-13 15:36:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:40,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204637991] [2022-12-13 15:36:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:40,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:40,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:36:40,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568367107] [2022-12-13 15:36:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:40,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:36:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:40,777 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:36:40,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 15:36:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:41,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-13 15:36:41,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:36:41,646 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2591 Int) (v_ArrVal_2592 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2592))) (= |c_#memory_$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_2591))))) is different from true [2022-12-13 15:36:41,657 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2591 Int) (v_ArrVal_2592 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2591)) |c_#memory_$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_2592))))) is different from true [2022-12-13 15:36:41,678 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 19 treesize of output 18 [2022-12-13 15:36:41,680 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 19 treesize of output 18 [2022-12-13 15:36:41,788 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2595 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2594 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2594))) (= |c_#memory_$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_2595))))) is different from true [2022-12-13 15:36:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 341 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 17 not checked. [2022-12-13 15:36:42,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:36:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204637991] [2022-12-13 15:36:43,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:36:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568367107] [2022-12-13 15:36:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568367107] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:36:43,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:36:43,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-12-13 15:36:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583576504] [2022-12-13 15:36:43,123 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:36:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 15:36:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 15:36:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=313, Unknown=19, NotChecked=114, Total=506 [2022-12-13 15:36:43,125 INFO L87 Difference]: Start difference. First operand 794 states and 1097 transitions. Second operand has 22 states, 20 states have (on average 5.65) internal successors, (113), 22 states have internal predecessors, (113), 9 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-13 15:36:44,966 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2591 Int) (v_ArrVal_2592 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2592))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2591))))) (exists ((v_ArrVal_2595 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2594 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2594))) (= |c_#memory_$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_2595)))))) is different from true [2022-12-13 15:37:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:37:05,541 INFO L93 Difference]: Finished difference Result 1728 states and 2584 transitions. [2022-12-13 15:37:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 15:37:05,541 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.65) internal successors, (113), 22 states have internal predecessors, (113), 9 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 236 [2022-12-13 15:37:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:37:05,546 INFO L225 Difference]: With dead ends: 1728 [2022-12-13 15:37:05,546 INFO L226 Difference]: Without dead ends: 1340 [2022-12-13 15:37:05,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 260 SyntacticMatches, 12 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=456, Invalid=1988, Unknown=22, NotChecked=396, Total=2862 [2022-12-13 15:37:05,548 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 400 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 4640 mSolverCounterSat, 394 mSolverCounterUnsat, 148 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 6804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 4640 IncrementalHoareTripleChecker+Invalid, 148 IncrementalHoareTripleChecker+Unknown, 1622 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:37:05,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1331 Invalid, 6804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 4640 Invalid, 148 Unknown, 1622 Unchecked, 11.2s Time] [2022-12-13 15:37:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-12-13 15:37:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1291. [2022-12-13 15:37:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 775 states have (on average 1.1561290322580646) internal successors, (896), 796 states have internal predecessors, (896), 374 states have call successors, (374), 136 states have call predecessors, (374), 141 states have return successors, (651), 358 states have call predecessors, (651), 368 states have call successors, (651) [2022-12-13 15:37:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1921 transitions. [2022-12-13 15:37:05,688 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1921 transitions. Word has length 236 [2022-12-13 15:37:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:37:05,688 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1921 transitions. [2022-12-13 15:37:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.65) internal successors, (113), 22 states have internal predecessors, (113), 9 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-13 15:37:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1921 transitions. [2022-12-13 15:37:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-12-13 15:37:05,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:37:05,691 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:05,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 15:37:05,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 15:37:05,892 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:37:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 245447169, now seen corresponding path program 1 times [2022-12-13 15:37:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906496599] [2022-12-13 15:37:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:05,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:37:05,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009762753] [2022-12-13 15:37:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:05,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:37:05,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:37:05,951 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:37:05,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 15:37:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:06,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 112 conjunts are in the unsatisfiable core [2022-12-13 15:37:06,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:37:06,413 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 15:37:06,832 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 15:37:07,012 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 15:37:07,013 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 15:37:07,026 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2814 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2814))) (exists ((v_ArrVal_2815 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2815) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 15:37:07,034 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 15:37:07,043 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 15:37:07,125 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2819 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2819)))) (exists ((v_ArrVal_2818 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2818)) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-13 15:37:07,138 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2818 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_2819 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_2818)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_2819))))) is different from true [2022-12-13 15:37:07,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:37:07,176 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 15:37:07,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:37:07,179 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 15:37:07,352 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 15 treesize of output 7 [2022-12-13 15:37:07,355 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 15 treesize of output 7 [2022-12-13 15:37:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 325 proven. 32 refuted. 0 times theorem prover too weak. 149 trivial. 7 not checked. [2022-12-13 15:37:07,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:37:07,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:07,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906496599] [2022-12-13 15:37:07,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:37:07,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009762753] [2022-12-13 15:37:07,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009762753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:37:07,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:37:07,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-12-13 15:37:07,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127951325] [2022-12-13 15:37:07,834 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:37:07,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 15:37:07,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 15:37:07,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=788, Unknown=7, NotChecked=174, Total=1056 [2022-12-13 15:37:07,835 INFO L87 Difference]: Start difference. First operand 1291 states and 1921 transitions. Second operand has 27 states, 23 states have (on average 4.565217391304348) internal successors, (105), 26 states have internal predecessors, (105), 12 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 11 states have call predecessors, (32), 12 states have call successors, (32) [2022-12-13 15:37:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:37:14,594 INFO L93 Difference]: Finished difference Result 2549 states and 3892 transitions. [2022-12-13 15:37:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 15:37:14,595 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.565217391304348) internal successors, (105), 26 states have internal predecessors, (105), 12 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 11 states have call predecessors, (32), 12 states have call successors, (32) Word has length 238 [2022-12-13 15:37:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:37:14,602 INFO L225 Difference]: With dead ends: 2549 [2022-12-13 15:37:14,602 INFO L226 Difference]: Without dead ends: 1889 [2022-12-13 15:37:14,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 329 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=424, Invalid=4127, Unknown=17, NotChecked=402, Total=4970 [2022-12-13 15:37:14,605 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 333 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 7744 mSolverCounterSat, 387 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 9854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 7744 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 1705 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:37:14,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 2816 Invalid, 9854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 7744 Invalid, 18 Unknown, 1705 Unchecked, 5.1s Time] [2022-12-13 15:37:14,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-12-13 15:37:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1798. [2022-12-13 15:37:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1083 states have (on average 1.162511542012927) internal successors, (1259), 1114 states have internal predecessors, (1259), 528 states have call successors, (528), 175 states have call predecessors, (528), 186 states have return successors, (967), 508 states have call predecessors, (967), 518 states have call successors, (967) [2022-12-13 15:37:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2754 transitions. [2022-12-13 15:37:14,772 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2754 transitions. Word has length 238 [2022-12-13 15:37:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:37:14,773 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2754 transitions. [2022-12-13 15:37:14,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.565217391304348) internal successors, (105), 26 states have internal predecessors, (105), 12 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 11 states have call predecessors, (32), 12 states have call successors, (32) [2022-12-13 15:37:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2754 transitions. [2022-12-13 15:37:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 15:37:14,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:37:14,775 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:14,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 15:37:14,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 15:37:14,976 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:37:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1570933369, now seen corresponding path program 1 times [2022-12-13 15:37:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669191322] [2022-12-13 15:37:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:15,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:37:15,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856972430] [2022-12-13 15:37:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:37:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:37:15,043 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:37:15,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 15:37:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:15,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-13 15:37:15,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:37:15,635 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 15:37:15,639 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 15:37:15,751 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3040 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3041 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3041))) (= |c_#memory_$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_3040))))) is different from true [2022-12-13 15:37:16,208 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 15:37:16,211 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 15:37:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-12-13 15:37:16,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:37:16,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:16,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669191322] [2022-12-13 15:37:16,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:37:16,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856972430] [2022-12-13 15:37:16,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856972430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:16,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:16,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-13 15:37:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461467628] [2022-12-13 15:37:16,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:16,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:37:16,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:16,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:37:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=307, Unknown=25, NotChecked=36, Total=420 [2022-12-13 15:37:16,241 INFO L87 Difference]: Start difference. First operand 1798 states and 2754 transitions. Second operand has 21 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 9 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-12-13 15:37:18,345 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 15:37:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:37:32,867 INFO L93 Difference]: Finished difference Result 3381 states and 5079 transitions. [2022-12-13 15:37:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 15:37:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 9 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 240 [2022-12-13 15:37:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:37:32,876 INFO L225 Difference]: With dead ends: 3381 [2022-12-13 15:37:32,876 INFO L226 Difference]: Without dead ends: 2668 [2022-12-13 15:37:32,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=249, Invalid=1704, Unknown=31, NotChecked=86, Total=2070 [2022-12-13 15:37:32,879 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 406 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 4980 mSolverCounterSat, 317 mSolverCounterUnsat, 218 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 6051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 4980 IncrementalHoareTripleChecker+Invalid, 218 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:37:32,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1472 Invalid, 6051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 4980 Invalid, 218 Unknown, 536 Unchecked, 10.3s Time] [2022-12-13 15:37:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-12-13 15:37:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2261. [2022-12-13 15:37:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1377 states have (on average 1.1626724763979666) internal successors, (1601), 1420 states have internal predecessors, (1601), 638 states have call successors, (638), 230 states have call predecessors, (638), 245 states have return successors, (1153), 610 states have call predecessors, (1153), 623 states have call successors, (1153) [2022-12-13 15:37:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3392 transitions. [2022-12-13 15:37:33,093 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3392 transitions. Word has length 240 [2022-12-13 15:37:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:37:33,093 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 3392 transitions. [2022-12-13 15:37:33,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 9 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-12-13 15:37:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3392 transitions. [2022-12-13 15:37:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 15:37:33,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:37:33,096 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:33,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 15:37:33,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:37:33,298 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:37:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1942678727, now seen corresponding path program 2 times [2022-12-13 15:37:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:33,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206420911] [2022-12-13 15:37:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:33,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:33,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:37:33,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290030738] [2022-12-13 15:37:33,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:37:33,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:37:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:37:33,384 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:37:33,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 15:37:34,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:37:34,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:37:34,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 93 conjunts are in the unsatisfiable core [2022-12-13 15:37:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:37:34,742 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 15:37:34,746 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 21 treesize of output 20 [2022-12-13 15:37:34,844 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3249 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3249)))) (exists ((v_ArrVal_3247 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3247))))) is different from true [2022-12-13 15:37:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-12-13 15:37:35,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:37:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:35,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206420911] [2022-12-13 15:37:35,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:37:35,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290030738] [2022-12-13 15:37:35,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290030738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:35,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:35,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-13 15:37:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799225558] [2022-12-13 15:37:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:37:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:37:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=274, Unknown=22, NotChecked=34, Total=380 [2022-12-13 15:37:35,390 INFO L87 Difference]: Start difference. First operand 2261 states and 3392 transitions. Second operand has 20 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 7 states have call predecessors, (32), 8 states have call successors, (32) [2022-12-13 15:37:37,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:38:02,114 INFO L93 Difference]: Finished difference Result 2995 states and 4617 transitions. [2022-12-13 15:38:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 15:38:02,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 7 states have call predecessors, (32), 8 states have call successors, (32) Word has length 240 [2022-12-13 15:38:02,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:38:02,129 INFO L225 Difference]: With dead ends: 2995 [2022-12-13 15:38:02,130 INFO L226 Difference]: Without dead ends: 2054 [2022-12-13 15:38:02,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=357, Invalid=2172, Unknown=25, NotChecked=98, Total=2652 [2022-12-13 15:38:02,133 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 463 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 6268 mSolverCounterSat, 504 mSolverCounterUnsat, 239 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 7613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 6268 IncrementalHoareTripleChecker+Invalid, 239 IncrementalHoareTripleChecker+Unknown, 602 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:38:02,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1597 Invalid, 7613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 6268 Invalid, 239 Unknown, 602 Unchecked, 15.0s Time] [2022-12-13 15:38:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-12-13 15:38:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1946. [2022-12-13 15:38:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1180 states have (on average 1.1550847457627118) internal successors, (1363), 1201 states have internal predecessors, (1363), 573 states have call successors, (573), 181 states have call predecessors, (573), 192 states have return successors, (1094), 563 states have call predecessors, (1094), 559 states have call successors, (1094) [2022-12-13 15:38:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3030 transitions. [2022-12-13 15:38:02,369 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3030 transitions. Word has length 240 [2022-12-13 15:38:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:38:02,369 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 3030 transitions. [2022-12-13 15:38:02,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 7 states have call predecessors, (32), 8 states have call successors, (32) [2022-12-13 15:38:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3030 transitions. [2022-12-13 15:38:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-12-13 15:38:02,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:02,373 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:02,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 15:38:02,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:02,574 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1379360720, now seen corresponding path program 1 times [2022-12-13 15:38:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:02,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486499430] [2022-12-13 15:38:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:02,624 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:38:02,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328770455] [2022-12-13 15:38:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:02,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:02,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 15:38:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:03,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 3142 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 15:38:03,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:03,283 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 15:38:03,359 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 15:38:03,461 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3475 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3475)) |c_#memory_$Pointer$.base|)) is different from true [2022-12-13 15:38:11,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:38:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-12-13 15:38:11,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:38:11,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:11,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486499430] [2022-12-13 15:38:11,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:38:11,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328770455] [2022-12-13 15:38:11,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328770455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:11,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:11,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-13 15:38:11,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481154113] [2022-12-13 15:38:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:11,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 15:38:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 15:38:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-12-13 15:38:11,647 INFO L87 Difference]: Start difference. First operand 1946 states and 3030 transitions. Second operand has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-12-13 15:38:14,531 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 15:38:16,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:18,788 WARN L539 Checker$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 15:38:20,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:38:22,946 WARN L539 Checker$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 15:38:24,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:29,013 WARN L539 Checker$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 15:38:31,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:35,087 WARN L539 Checker$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 15:38:37,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:41,136 WARN L539 Checker$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 15:38:43,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:45,159 WARN L539 Checker$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 15:38:47,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:49,197 WARN L539 Checker$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 15:38:51,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:38:53,245 WARN L539 Checker$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 15:39:34,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:39:36,102 WARN L539 Checker$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 15:39:38,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:39:40,274 WARN L539 Checker$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 15:39:42,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:39:44,524 WARN L539 Checker$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 15:39:46,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:39:48,577 WARN L539 Checker$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 15:39:50,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:39:52,499 WARN L539 Checker$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 15:39:54,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:39:57,160 WARN L539 Checker$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 15:39:59,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:01,360 WARN L539 Checker$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 15:40:03,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:05,480 WARN L539 Checker$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 15:40:07,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:09,704 WARN L539 Checker$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 15:40:11,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:13,731 WARN L539 Checker$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 15:40:15,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:17,863 WARN L539 Checker$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 15:40:20,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:22,044 WARN L539 Checker$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 15:40:24,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:26,168 WARN L539 Checker$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 15:40:28,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:40:30,211 WARN L539 Checker$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 15:40:32,396 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 15:40:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:40:32,449 INFO L93 Difference]: Finished difference Result 2853 states and 4431 transitions. [2022-12-13 15:40:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 15:40:32,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 244 [2022-12-13 15:40:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:40:32,464 INFO L225 Difference]: With dead ends: 2853 [2022-12-13 15:40:32,464 INFO L226 Difference]: Without dead ends: 1980 [2022-12-13 15:40:32,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 52.9s TimeCoverageRelationStatistics Valid=212, Invalid=1153, Unknown=45, NotChecked=72, Total=1482 [2022-12-13 15:40:32,471 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 234 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 2962 mSolverCounterSat, 150 mSolverCounterUnsat, 154 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2962 IncrementalHoareTripleChecker+Invalid, 154 IncrementalHoareTripleChecker+Unknown, 506 IncrementalHoareTripleChecker+Unchecked, 95.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:40:32,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1341 Invalid, 3772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2962 Invalid, 154 Unknown, 506 Unchecked, 95.9s Time] [2022-12-13 15:40:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2022-12-13 15:40:32,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1910. [2022-12-13 15:40:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1161 states have (on average 1.1533161068044788) internal successors, (1339), 1179 states have internal predecessors, (1339), 559 states have call successors, (559), 175 states have call predecessors, (559), 189 states have return successors, (1073), 555 states have call predecessors, (1073), 545 states have call successors, (1073) [2022-12-13 15:40:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2971 transitions. [2022-12-13 15:40:32,677 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2971 transitions. Word has length 244 [2022-12-13 15:40:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:40:32,677 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 2971 transitions. [2022-12-13 15:40:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-12-13 15:40:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2971 transitions. [2022-12-13 15:40:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-12-13 15:40:32,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:40:32,682 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:40:32,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 15:40:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 15:40:32,883 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:40:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:40:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2144025402, now seen corresponding path program 2 times [2022-12-13 15:40:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:40:32,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863554750] [2022-12-13 15:40:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:40:32,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:40:32,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:40:32,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146784373] [2022-12-13 15:40:32,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:40:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:40:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:40:32,974 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:40:32,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 15:40:34,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:40:34,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:40:34,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 286 conjunts are in the unsatisfiable core [2022-12-13 15:40:34,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:40:34,206 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 15:40:34,261 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 15:40:34,266 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 15:40:34,333 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 15:40:34,337 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 22 treesize of output 21 [2022-12-13 15:40:34,435 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3708 Int) (v_ArrVal_3706 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3708))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3706)) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-13 15:40:34,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:40:34,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 15:40:34,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:40:34,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-12-13 15:40:35,616 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 15:40:35,617 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 15:40:35,618 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 15:40:35,634 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3713 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_3713) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3714 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_3714) |c_#memory_int|)) (exists ((v_ArrVal_3712 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_3712)))) is different from true [2022-12-13 15:40:35,644 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 17 treesize of output 19 [2022-12-13 15:40:35,648 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 18 treesize of output 20 [2022-12-13 15:40:35,655 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 16 treesize of output 18 [2022-12-13 15:40:35,762 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3718 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3718))) (exists ((v_ArrVal_3716 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3716))) (exists ((v_ArrVal_3715 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3715)) |c_#memory_int|))) is different from true [2022-12-13 15:40:35,779 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3715 Int) (v_ArrVal_3718 (Array Int Int)) (|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3716 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_3715))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3718) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3716) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 15:40:35,842 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:40:35,843 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-12-13 15:40:35,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:40:35,849 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 23 treesize of output 22 [2022-12-13 15:40:35,862 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:40:35,862 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 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-13 15:40:35,869 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 7 treesize of output 3 [2022-12-13 15:40:35,872 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 8 treesize of output 4 [2022-12-13 15:40:36,365 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 9 treesize of output 3 [2022-12-13 15:40:36,766 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3719 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3719)) |c_#memory_int|)) (exists ((v_ArrVal_3722 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3722)) |c_#memory_$Pointer$.base|))) is different from true [2022-12-13 15:40:37,123 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:40:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 323 proven. 78 refuted. 5 times theorem prover too weak. 97 trivial. 29 not checked. [2022-12-13 15:40:37,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:40:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:40:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863554750] [2022-12-13 15:40:37,542 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:40:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146784373] [2022-12-13 15:40:37,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146784373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:40:37,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:40:37,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-12-13 15:40:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655621130] [2022-12-13 15:40:37,542 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:40:37,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 15:40:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:40:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 15:40:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1418, Unknown=30, NotChecked=400, Total=1980 [2022-12-13 15:40:37,543 INFO L87 Difference]: Start difference. First operand 1910 states and 2971 transitions. Second operand has 42 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (35), 8 states have call predecessors, (35), 15 states have return successors, (34), 17 states have call predecessors, (34), 18 states have call successors, (34) [2022-12-13 15:40:39,575 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 15:40:42,237 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|))) (and (exists ((v_ArrVal_3718 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3718))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3708 Int) (v_ArrVal_3706 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3708))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3706)) |c_#memory_$Pointer$.offset|))) (exists ((v_ArrVal_3719 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3719)) |c_#memory_int|)) (exists ((v_ArrVal_3716 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3716))) (exists ((v_ArrVal_3722 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3722)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3715 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3715)) |c_#memory_int|)))) is different from true [2022-12-13 15:41:29,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:41:41,961 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 15:41:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:41:59,249 INFO L93 Difference]: Finished difference Result 7942 states and 12023 transitions. [2022-12-13 15:41:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-12-13 15:41:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (35), 8 states have call predecessors, (35), 15 states have return successors, (34), 17 states have call predecessors, (34), 18 states have call successors, (34) Word has length 246 [2022-12-13 15:41:59,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:41:59,270 INFO L225 Difference]: With dead ends: 7942 [2022-12-13 15:41:59,270 INFO L226 Difference]: Without dead ends: 6252 [2022-12-13 15:41:59,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 196 SyntacticMatches, 17 SemanticMatches, 133 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 5146 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=1682, Invalid=14736, Unknown=118, NotChecked=1554, Total=18090 [2022-12-13 15:41:59,283 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 899 mSDsluCounter, 5246 mSDsCounter, 0 mSdLazyCounter, 25349 mSolverCounterSat, 1646 mSolverCounterUnsat, 285 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 5695 SdHoareTripleChecker+Invalid, 33458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1646 IncrementalHoareTripleChecker+Valid, 25349 IncrementalHoareTripleChecker+Invalid, 285 IncrementalHoareTripleChecker+Unknown, 6178 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:41:59,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 5695 Invalid, 33458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1646 Valid, 25349 Invalid, 285 Unknown, 6178 Unchecked, 46.5s Time] [2022-12-13 15:41:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2022-12-13 15:41:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 5794. [2022-12-13 15:41:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 3533 states have (on average 1.151146334559864) internal successors, (4067), 3653 states have internal predecessors, (4067), 1612 states have call successors, (1612), 595 states have call predecessors, (1612), 648 states have return successors, (3079), 1545 states have call predecessors, (3079), 1575 states have call successors, (3079) [2022-12-13 15:42:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8758 transitions. [2022-12-13 15:42:00,012 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8758 transitions. Word has length 246 [2022-12-13 15:42:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:42:00,012 INFO L495 AbstractCegarLoop]: Abstraction has 5794 states and 8758 transitions. [2022-12-13 15:42:00,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (35), 8 states have call predecessors, (35), 15 states have return successors, (34), 17 states have call predecessors, (34), 18 states have call successors, (34) [2022-12-13 15:42:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8758 transitions. [2022-12-13 15:42:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-12-13 15:42:00,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:42:00,018 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:00,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 15:42:00,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:42:00,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:42:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:42:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 273865260, now seen corresponding path program 3 times [2022-12-13 15:42:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:42:00,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041923864] [2022-12-13 15:42:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:42:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:42:00,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:42:00,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988782778] [2022-12-13 15:42:00,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:42:00,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:42:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:42:00,322 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:42:00,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 15:42:01,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 15:42:01,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:42:01,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 15:42:01,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:42:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-12-13 15:42:01,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:42:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:42:01,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041923864] [2022-12-13 15:42:01,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:42:01,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988782778] [2022-12-13 15:42:01,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988782778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:42:01,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:42:01,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:42:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035812553] [2022-12-13 15:42:01,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:42:01,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:42:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:42:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:42:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:42:01,726 INFO L87 Difference]: Start difference. First operand 5794 states and 8758 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-13 15:42:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:42:02,529 INFO L93 Difference]: Finished difference Result 10220 states and 15279 transitions. [2022-12-13 15:42:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:42:02,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (33), 2 states have call predecessors, (33), 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 15:42:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:42:02,546 INFO L225 Difference]: With dead ends: 10220 [2022-12-13 15:42:02,546 INFO L226 Difference]: Without dead ends: 4423 [2022-12-13 15:42:02,558 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 15:42:02,559 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 9 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:42:02,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2903 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:42:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-12-13 15:42:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4393. [2022-12-13 15:42:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 2699 states have (on average 1.1467210077806596) internal successors, (3095), 2783 states have internal predecessors, (3095), 1178 states have call successors, (1178), 473 states have call predecessors, (1178), 515 states have return successors, (2216), 1136 states have call predecessors, (2216), 1147 states have call successors, (2216) [2022-12-13 15:42:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6489 transitions. [2022-12-13 15:42:03,020 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6489 transitions. Word has length 252 [2022-12-13 15:42:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:42:03,020 INFO L495 AbstractCegarLoop]: Abstraction has 4393 states and 6489 transitions. [2022-12-13 15:42:03,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-13 15:42:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6489 transitions. [2022-12-13 15:42:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-12-13 15:42:03,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:42:03,025 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:42:03,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 15:42:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:42:03,225 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:42:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:42:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 112684739, now seen corresponding path program 3 times [2022-12-13 15:42:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:42:03,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853895658] [2022-12-13 15:42:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:42:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:42:03,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:42:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707127634] [2022-12-13 15:42:03,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:42:03,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:42:03,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:42:03,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:42:03,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4b24cd-d3bf-48cd-8bcf-30723f35b307/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 15:42:04,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 15:42:04,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:42:04,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 164 conjunts are in the unsatisfiable core [2022-12-13 15:42:04,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:42:19,441 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-12-13 15:42:19,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 215 [2022-12-13 15:42:19,528 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-12-13 15:42:19,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 193 [2022-12-13 15:42:19,688 INFO L321 Elim1Store]: treesize reduction 82, result has 49.1 percent of original size [2022-12-13 15:42:19,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 206 [2022-12-13 15:42:22,413 INFO L321 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2022-12-13 15:42:22,414 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 1 case distinctions, treesize of input 83 treesize of output 78 [2022-12-13 15:42:22,448 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 37 treesize of output 29 [2022-12-13 15:42:22,487 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 37 treesize of output 29 [2022-12-13 15:42:22,825 INFO L321 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2022-12-13 15:42:22,825 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 2 case distinctions, treesize of input 83 treesize of output 78 [2022-12-13 15:42:22,850 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 37 treesize of output 29 [2022-12-13 15:42:22,910 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 37 treesize of output 29 [2022-12-13 15:42:23,369 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-12-13 15:42:23,369 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 1 case distinctions, treesize of input 83 treesize of output 82 [2022-12-13 15:42:23,415 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 37 treesize of output 29 [2022-12-13 15:42:23,678 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-12-13 15:42:23,678 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 1 case distinctions, treesize of input 183 treesize of output 173 [2022-12-13 15:42:23,737 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 164 treesize of output 152 [2022-12-13 15:42:23,904 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 1 [2022-12-13 15:42:24,209 INFO L321 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2022-12-13 15:42:24,210 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 1 case distinctions, treesize of input 33 treesize of output 30 [2022-12-13 15:42:24,226 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 7 treesize of output 3 [2022-12-13 15:42:24,399 INFO L321 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2022-12-13 15:42:24,400 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 2 case distinctions, treesize of input 191 treesize of output 184 [2022-12-13 15:42:24,461 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 172 treesize of output 160 [2022-12-13 15:42:24,585 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 172 treesize of output 160 [2022-12-13 15:42:24,842 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 15:42:24,843 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 1 case distinctions, treesize of input 13 treesize of output 1 [2022-12-13 15:42:25,241 INFO L321 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2022-12-13 15:42:25,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 369 treesize of output 360 [2022-12-13 15:42:25,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:42:25,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 254 [2022-12-13 15:42:25,456 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-12-13 15:42:25,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 245 [2022-12-13 15:42:25,679 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 13 treesize of output 9 [2022-12-13 15:42:26,452 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 8 treesize of output 4 [2022-12-13 15:42:26,553 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:42:26,664 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 8 treesize of output 4 [2022-12-13 15:42:26,675 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 13 treesize of output 9 [2022-12-13 15:42:26,976 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 44 treesize of output 28 [2022-12-13 15:42:27,014 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 44 treesize of output 28 [2022-12-13 15:42:27,029 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 104 treesize of output 87 [2022-12-13 15:42:27,031 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 13 treesize of output 9 [2022-12-13 15:42:27,224 INFO L321 Elim1Store]: treesize reduction 48, result has 43.5 percent of original size [2022-12-13 15:42:27,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 367 treesize of output 535 [2022-12-13 15:42:27,768 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:42:27,774 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:42:28,011 INFO L321 Elim1Store]: treesize reduction 166, result has 4.6 percent of original size [2022-12-13 15:42:28,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 12 case distinctions, treesize of input 71 treesize of output 161 [2022-12-13 15:42:28,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:28,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:28,280 INFO L321 Elim1Store]: treesize reduction 122, result has 18.7 percent of original size [2022-12-13 15:42:28,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 77 treesize of output 151 [2022-12-13 15:42:28,425 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 13 treesize of output 9 [2022-12-13 15:42:28,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:28,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:28,480 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-13 15:42:28,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 75 [2022-12-13 15:42:28,780 INFO L321 Elim1Store]: treesize reduction 201, result has 17.3 percent of original size [2022-12-13 15:42:28,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 22 case distinctions, treesize of input 120 treesize of output 490 [2022-12-13 15:42:29,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:29,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:29,269 INFO L321 Elim1Store]: treesize reduction 172, result has 7.5 percent of original size [2022-12-13 15:42:29,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 19 case distinctions, treesize of input 262 treesize of output 600 [2022-12-13 15:42:29,629 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 13 treesize of output 9 [2022-12-13 15:42:29,759 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 13 treesize of output 9 [2022-12-13 15:42:29,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:29,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:29,857 INFO L321 Elim1Store]: treesize reduction 127, result has 5.9 percent of original size [2022-12-13 15:42:29,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 213 treesize of output 299 [2022-12-13 15:42:29,880 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:42:30,630 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 13 treesize of output 9 [2022-12-13 15:42:34,198 INFO L321 Elim1Store]: treesize reduction 252, result has 33.2 percent of original size [2022-12-13 15:42:34,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 644 treesize of output 1024 [2022-12-13 15:42:34,752 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 13 treesize of output 9 [2022-12-13 15:42:36,606 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 13 treesize of output 9 [2022-12-13 15:42:36,817 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 13 treesize of output 9 [2022-12-13 15:42:36,825 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 13 treesize of output 9 [2022-12-13 15:42:36,871 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 13 treesize of output 9 [2022-12-13 15:42:36,987 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:42:37,024 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 13 treesize of output 9 [2022-12-13 15:42:37,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:37,776 INFO L321 Elim1Store]: treesize reduction 157, result has 29.3 percent of original size [2022-12-13 15:42:37,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 1656 treesize of output 1821 [2022-12-13 15:42:38,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,389 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-13 15:42:38,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 228 treesize of output 219 [2022-12-13 15:42:38,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,546 INFO L321 Elim1Store]: treesize reduction 102, result has 1.0 percent of original size [2022-12-13 15:42:38,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 228 treesize of output 219 [2022-12-13 15:42:38,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,624 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-13 15:42:38,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 228 treesize of output 219 [2022-12-13 15:42:38,814 INFO L321 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2022-12-13 15:42:38,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 26 [2022-12-13 15:42:38,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:42:38,873 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-13 15:42:38,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 26 [2022-12-13 15:42:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:42:39,800 INFO L321 Elim1Store]: treesize reduction 57, result has 25.0 percent of original size [2022-12-13 15:42:39,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 113 treesize of output 85 [2022-12-13 15:42:39,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:42:39,884 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-13 15:42:39,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 71 [2022-12-13 15:42:56,131 WARN L233 SmtUtils]: Spent 16.21s on a formula simplification. DAG size of input: 289 DAG size of output: 109 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 15:42:56,132 INFO L321 Elim1Store]: treesize reduction 1074, result has 18.3 percent of original size [2022-12-13 15:42:56,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 12 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 16 new quantified variables, introduced 60 case distinctions, treesize of input 895 treesize of output 2739 [2022-12-13 15:45:48,566 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:45:48,682 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 13 treesize of output 9 [2022-12-13 15:45:49,583 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 13 treesize of output 9 [2022-12-13 15:45:50,941 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:46:04,817 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 13 treesize of output 9 [2022-12-13 15:46:05,354 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:46:05,427 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 13 treesize of output 9 [2022-12-13 15:46:06,171 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 15:46:06,270 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 13 treesize of output 9 [2022-12-13 15:46:07,522 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 13 treesize of output 9 [2022-12-13 15:46:36,742 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 13 treesize of output 9 [2022-12-13 15:46:36,898 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 13 treesize of output 9 [2022-12-13 15:46:37,132 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 13 treesize of output 9 [2022-12-13 15:46:38,140 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 13 treesize of output 9 [2022-12-13 15:46:38,418 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 13 treesize of output 9 [2022-12-13 15:46:38,877 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 13 treesize of output 9