./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro --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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- 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-8393723 [2022-11-18 18:39:12,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:39:12,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:39:12,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:39:12,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:39:12,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:39:12,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:39:12,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:39:12,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:39:12,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:39:12,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:39:12,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:39:12,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:39:12,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:39:12,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:39:12,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:39:12,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:39:12,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:39:12,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:39:12,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:39:12,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:39:12,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:39:12,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:39:12,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:39:12,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:39:12,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:39:12,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:39:12,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:39:12,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:39:12,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:39:12,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:39:12,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:39:12,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:39:12,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:39:12,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:39:12,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:39:12,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:39:12,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:39:12,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:39:12,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:39:12,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:39:12,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 18:39:12,406 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:39:12,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:39:12,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:39:12,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:39:12,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:39:12,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:39:12,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:39:12,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:39:12,410 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:39:12,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:39:12,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:39:12,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:39:12,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:39:12,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:39:12,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:39:12,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:39:12,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:39:12,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:39:12,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:39:12,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:39:12,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:39:12,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:12,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:39:12,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:39:12,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:39:12,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:39:12,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:39:12,415 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:39:12,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:39:12,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:39:12,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-11-18 18:39:12,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:39:12,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:39:12,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:39:12,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:39:12,846 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:39:12,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-18 18:39:12,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/data/82dc31580/795ea518d82d4a0492f17b8298b62071/FLAGfb1895b4d [2022-11-18 18:39:13,951 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:39:13,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-18 18:39:14,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/data/82dc31580/795ea518d82d4a0492f17b8298b62071/FLAGfb1895b4d [2022-11-18 18:39:14,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/data/82dc31580/795ea518d82d4a0492f17b8298b62071 [2022-11-18 18:39:14,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:39:14,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:39:14,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:14,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:39:14,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:39:14,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:14" (1/1) ... [2022-11-18 18:39:14,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303b7dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:14, skipping insertion in model container [2022-11-18 18:39:14,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:14" (1/1) ... [2022-11-18 18:39:14,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:39:14,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:39:14,955 WARN L234 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_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-18 18:39:14,963 WARN L234 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_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-18 18:39:15,932 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 18:39:16,014 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,015 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,016 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,017 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,019 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,036 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,037 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,039 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,040 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,043 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,044 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,045 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,046 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 18:39:16,588 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 18:39:16,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 18:39:16,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 18:39:16,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 18:39:16,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 18:39:16,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 18:39:16,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 18:39:16,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 18:39:16,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 18:39:16,767 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,774 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,852 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,852 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,853 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:16,887 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:39:16,904 WARN L234 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_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-18 18:39:16,905 WARN L234 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_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-18 18:39:16,947 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 18:39:16,966 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,967 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,968 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,968 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,969 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,979 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,980 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,981 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,982 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,983 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,984 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,985 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:16,985 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:17,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 18:39:17,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 18:39:17,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 18:39:17,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 18:39:17,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 18:39:17,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 18:39:17,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 18:39:17,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 18:39:17,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 18:39:17,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 18:39:17,077 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:17,083 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:17,113 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:17,113 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:17,114 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:17,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:17,410 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:39:17,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17 WrapperNode [2022-11-18 18:39:17,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:17,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:17,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:39:17,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:39:17,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,640 INFO L138 Inliner]: procedures = 691, calls = 1680, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 846 [2022-11-18 18:39:17,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:17,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:39:17,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:39:17,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:39:17,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:39:17,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:39:17,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:39:17,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:39:17,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (1/1) ... [2022-11-18 18:39:17,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:17,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:17,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:39:17,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:39:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:39:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-18 18:39:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-18 18:39:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-18 18:39:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-18 18:39:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 18:39:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 18:39:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-18 18:39:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-18 18:39:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:39:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 18:39:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 18:39:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:39:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:39:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:39:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:39:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:39:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-18 18:39:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-18 18:39:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:39:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:39:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 18:39:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 18:39:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-18 18:39:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-18 18:39:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-18 18:39:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-18 18:39:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 18:39:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 18:39:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-18 18:39:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-18 18:39:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-18 18:39:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-18 18:39:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:39:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:39:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-18 18:39:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-18 18:39:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-18 18:39:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-18 18:39:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:39:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-18 18:39:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-18 18:39:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:39:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 18:39:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 18:39:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 18:39:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-18 18:39:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-18 18:39:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-18 18:39:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-18 18:39:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:39:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-18 18:39:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-18 18:39:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-18 18:39:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-18 18:39:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:39:18,461 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:39:18,466 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:39:19,896 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:39:19,907 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:39:19,908 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:39:19,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:19 BoogieIcfgContainer [2022-11-18 18:39:19,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:39:19,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:39:19,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:39:19,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:39:19,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:39:14" (1/3) ... [2022-11-18 18:39:19,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5258e967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:19, skipping insertion in model container [2022-11-18 18:39:19,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17" (2/3) ... [2022-11-18 18:39:19,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5258e967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:19, skipping insertion in model container [2022-11-18 18:39:19,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:19" (3/3) ... [2022-11-18 18:39:19,922 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-11-18 18:39:19,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:39:19,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:39:20,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:39:20,024 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;@17ea70c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:39:20,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:39:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-18 18:39:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 18:39:20,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:20,052 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:20,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1870768140, now seen corresponding path program 1 times [2022-11-18 18:39:20,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:20,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029353550] [2022-11-18 18:39:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:39:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:39:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:39:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:39:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 18:39:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 18:39:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 18:39:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:39:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 18:39:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 18:39:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 18:39:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 18:39:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:39:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 18:39:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 18:39:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 18:39:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 18:39:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 18:39:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 18:39:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 18:39:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 18:39:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-18 18:39:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029353550] [2022-11-18 18:39:22,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029353550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:22,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513868743] [2022-11-18 18:39:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:22,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:22,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:22,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:39:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:39:22,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-11-18 18:39:23,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:23,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513868743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:23,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:23,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-18 18:39:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559635787] [2022-11-18 18:39:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:23,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:23,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:39:23,197 INFO L87 Difference]: Start difference. First operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-18 18:39:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:23,889 INFO L93 Difference]: Finished difference Result 557 states and 840 transitions. [2022-11-18 18:39:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:39:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 146 [2022-11-18 18:39:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:23,920 INFO L225 Difference]: With dead ends: 557 [2022-11-18 18:39:23,920 INFO L226 Difference]: Without dead ends: 278 [2022-11-18 18:39:23,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:39:23,943 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 386 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:23,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1217 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:39:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-18 18:39:24,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-18 18:39:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 163 states have internal predecessors, (195), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-18 18:39:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 396 transitions. [2022-11-18 18:39:24,082 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 396 transitions. Word has length 146 [2022-11-18 18:39:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:24,083 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 396 transitions. [2022-11-18 18:39:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-18 18:39:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 396 transitions. [2022-11-18 18:39:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 18:39:24,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:24,103 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:24,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:24,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 18:39:24,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 265363754, now seen corresponding path program 1 times [2022-11-18 18:39:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:24,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233315999] [2022-11-18 18:39:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:24,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:24,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114740298] [2022-11-18 18:39:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:24,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:24,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:24,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:39:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:25,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:39:25,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-18 18:39:25,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:25,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233315999] [2022-11-18 18:39:25,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:25,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114740298] [2022-11-18 18:39:25,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114740298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:25,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:25,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:39:25,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442201326] [2022-11-18 18:39:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:25,402 INFO L87 Difference]: Start difference. First operand 278 states and 396 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-18 18:39:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:25,489 INFO L93 Difference]: Finished difference Result 535 states and 784 transitions. [2022-11-18 18:39:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:39:25,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 176 [2022-11-18 18:39:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:25,503 INFO L225 Difference]: With dead ends: 535 [2022-11-18 18:39:25,503 INFO L226 Difference]: Without dead ends: 283 [2022-11-18 18:39:25,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:25,514 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 10 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1124 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 [2022-11-18 18:39:25,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1124 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-18 18:39:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2022-11-18 18:39:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-18 18:39:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 398 transitions. [2022-11-18 18:39:25,562 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 398 transitions. Word has length 176 [2022-11-18 18:39:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:25,563 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 398 transitions. [2022-11-18 18:39:25,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-18 18:39:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 398 transitions. [2022-11-18 18:39:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 18:39:25,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:25,568 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:25,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:25,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1664860694, now seen corresponding path program 1 times [2022-11-18 18:39:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:25,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785970270] [2022-11-18 18:39:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:25,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:25,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:25,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274980318] [2022-11-18 18:39:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:25,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:25,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:25,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:25,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:39:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:26,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:39:26,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-18 18:39:26,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:26,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:26,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785970270] [2022-11-18 18:39:26,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:26,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274980318] [2022-11-18 18:39:26,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274980318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:26,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:26,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:39:26,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146584887] [2022-11-18 18:39:26,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:26,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:39:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:39:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:39:26,889 INFO L87 Difference]: Start difference. First operand 280 states and 398 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-18 18:39:27,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:27,788 INFO L93 Difference]: Finished difference Result 512 states and 726 transitions. [2022-11-18 18:39:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:39:27,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 176 [2022-11-18 18:39:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:27,792 INFO L225 Difference]: With dead ends: 512 [2022-11-18 18:39:27,793 INFO L226 Difference]: Without dead ends: 280 [2022-11-18 18:39:27,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:39:27,795 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 444 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:27,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1529 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:39:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-18 18:39:27,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-18 18:39:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2022-11-18 18:39:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 394 transitions. [2022-11-18 18:39:27,835 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 394 transitions. Word has length 176 [2022-11-18 18:39:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:27,839 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 394 transitions. [2022-11-18 18:39:27,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-18 18:39:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 394 transitions. [2022-11-18 18:39:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-18 18:39:27,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:27,843 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:27,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:28,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:28,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:28,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:28,057 INFO L85 PathProgramCache]: Analyzing trace with hash -331838195, now seen corresponding path program 2 times [2022-11-18 18:39:28,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:28,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971683396] [2022-11-18 18:39:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:28,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:28,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:28,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810019879] [2022-11-18 18:39:28,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:28,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:28,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:39:28,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:39:28,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:28,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:39:28,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-18 18:39:28,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971683396] [2022-11-18 18:39:28,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810019879] [2022-11-18 18:39:28,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810019879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:28,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:28,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:39:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715108277] [2022-11-18 18:39:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:39:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:39:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:28,873 INFO L87 Difference]: Start difference. First operand 280 states and 394 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-18 18:39:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:28,935 INFO L93 Difference]: Finished difference Result 494 states and 684 transitions. [2022-11-18 18:39:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:39:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2022-11-18 18:39:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:28,939 INFO L225 Difference]: With dead ends: 494 [2022-11-18 18:39:28,939 INFO L226 Difference]: Without dead ends: 285 [2022-11-18 18:39:28,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:39:28,942 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1497 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 [2022-11-18 18:39:28,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1497 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-18 18:39:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-18 18:39:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2022-11-18 18:39:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 400 transitions. [2022-11-18 18:39:28,967 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 400 transitions. Word has length 191 [2022-11-18 18:39:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:28,968 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 400 transitions. [2022-11-18 18:39:28,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-18 18:39:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 400 transitions. [2022-11-18 18:39:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-18 18:39:28,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:28,973 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:28,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:29,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1595114899, now seen corresponding path program 1 times [2022-11-18 18:39:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:29,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987141114] [2022-11-18 18:39:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:29,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:29,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416585140] [2022-11-18 18:39:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:29,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:29,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:29,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:29,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:39:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:39:30,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-18 18:39:30,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:30,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:30,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987141114] [2022-11-18 18:39:30,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:30,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416585140] [2022-11-18 18:39:30,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416585140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:30,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:30,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:30,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440522356] [2022-11-18 18:39:30,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:30,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:30,368 INFO L87 Difference]: Start difference. First operand 285 states and 400 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-18 18:39:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:31,321 INFO L93 Difference]: Finished difference Result 516 states and 720 transitions. [2022-11-18 18:39:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 197 [2022-11-18 18:39:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:31,324 INFO L225 Difference]: With dead ends: 516 [2022-11-18 18:39:31,324 INFO L226 Difference]: Without dead ends: 285 [2022-11-18 18:39:31,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:39:31,326 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 494 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:31,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1700 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:39:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-18 18:39:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-18 18:39:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2022-11-18 18:39:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 394 transitions. [2022-11-18 18:39:31,357 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 394 transitions. Word has length 197 [2022-11-18 18:39:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:31,359 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 394 transitions. [2022-11-18 18:39:31,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-18 18:39:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 394 transitions. [2022-11-18 18:39:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-18 18:39:31,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:31,364 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:31,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:31,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:31,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash -895724094, now seen corresponding path program 2 times [2022-11-18 18:39:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:31,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157561452] [2022-11-18 18:39:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:31,716 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:31,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479821957] [2022-11-18 18:39:31,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:31,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:31,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:31,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:31,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:39:32,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:39:32,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:32,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:39:32,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-18 18:39:33,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157561452] [2022-11-18 18:39:33,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479821957] [2022-11-18 18:39:33,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479821957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:33,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:33,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:39:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825659863] [2022-11-18 18:39:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:33,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:39:33,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:39:33,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:33,121 INFO L87 Difference]: Start difference. First operand 285 states and 394 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-18 18:39:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:34,215 INFO L93 Difference]: Finished difference Result 513 states and 703 transitions. [2022-11-18 18:39:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:39:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 212 [2022-11-18 18:39:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:34,219 INFO L225 Difference]: With dead ends: 513 [2022-11-18 18:39:34,219 INFO L226 Difference]: Without dead ends: 285 [2022-11-18 18:39:34,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:39:34,221 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 542 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:34,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1901 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:39:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-18 18:39:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-18 18:39:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-18 18:39:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 390 transitions. [2022-11-18 18:39:34,251 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 390 transitions. Word has length 212 [2022-11-18 18:39:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:34,253 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 390 transitions. [2022-11-18 18:39:34,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-18 18:39:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 390 transitions. [2022-11-18 18:39:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 18:39:34,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:34,260 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:34,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:34,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:34,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 247081526, now seen corresponding path program 1 times [2022-11-18 18:39:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:34,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995376460] [2022-11-18 18:39:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:34,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:34,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284256960] [2022-11-18 18:39:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:34,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:34,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:34,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:34,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:39:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:35,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 3281 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 18:39:35,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-18 18:39:35,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:35,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:35,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995376460] [2022-11-18 18:39:35,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:35,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284256960] [2022-11-18 18:39:35,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284256960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:35,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:35,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:35,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375689911] [2022-11-18 18:39:35,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:35,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:35,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:35,774 INFO L87 Difference]: Start difference. First operand 285 states and 390 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-18 18:39:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:36,116 INFO L93 Difference]: Finished difference Result 646 states and 908 transitions. [2022-11-18 18:39:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:39:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 242 [2022-11-18 18:39:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:36,121 INFO L225 Difference]: With dead ends: 646 [2022-11-18 18:39:36,121 INFO L226 Difference]: Without dead ends: 412 [2022-11-18 18:39:36,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:39:36,124 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 133 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:36,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 3317 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:39:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-18 18:39:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2022-11-18 18:39:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 223 states have (on average 1.2152466367713004) internal successors, (271), 225 states have internal predecessors, (271), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2022-11-18 18:39:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 554 transitions. [2022-11-18 18:39:36,193 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 554 transitions. Word has length 242 [2022-11-18 18:39:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:36,193 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 554 transitions. [2022-11-18 18:39:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-18 18:39:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 554 transitions. [2022-11-18 18:39:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 18:39:36,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:36,200 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:36,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:36,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:39:36,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:36,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1060060872, now seen corresponding path program 1 times [2022-11-18 18:39:36,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:36,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427393243] [2022-11-18 18:39:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:36,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:36,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:36,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781799834] [2022-11-18 18:39:36,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:36,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:36,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:36,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:36,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:39:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 3278 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:39:37,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-18 18:39:37,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:37,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:37,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427393243] [2022-11-18 18:39:37,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:37,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781799834] [2022-11-18 18:39:37,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781799834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:37,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:37,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:39:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113264640] [2022-11-18 18:39:37,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:37,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:39:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:39:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:39:37,679 INFO L87 Difference]: Start difference. First operand 388 states and 554 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-18 18:39:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:38,072 INFO L93 Difference]: Finished difference Result 827 states and 1198 transitions. [2022-11-18 18:39:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:39:38,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 242 [2022-11-18 18:39:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:38,082 INFO L225 Difference]: With dead ends: 827 [2022-11-18 18:39:38,082 INFO L226 Difference]: Without dead ends: 500 [2022-11-18 18:39:38,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:38,088 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 129 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:38,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2973 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:39:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-18 18:39:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 478. [2022-11-18 18:39:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 270 states have (on average 1.2185185185185186) internal successors, (329), 272 states have internal predecessors, (329), 180 states have call successors, (180), 24 states have call predecessors, (180), 27 states have return successors, (189), 181 states have call predecessors, (189), 179 states have call successors, (189) [2022-11-18 18:39:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 698 transitions. [2022-11-18 18:39:38,153 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 698 transitions. Word has length 242 [2022-11-18 18:39:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:38,154 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 698 transitions. [2022-11-18 18:39:38,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-18 18:39:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 698 transitions. [2022-11-18 18:39:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 18:39:38,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:38,161 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:38,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:39:38,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash -642172170, now seen corresponding path program 1 times [2022-11-18 18:39:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:38,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945907418] [2022-11-18 18:39:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:38,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:38,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495568014] [2022-11-18 18:39:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:38,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:38,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:38,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:39:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:39,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 3275 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 18:39:39,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 276 proven. 37 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 18:39:40,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-18 18:39:40,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945907418] [2022-11-18 18:39:40,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495568014] [2022-11-18 18:39:40,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495568014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:40,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:40,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-11-18 18:39:40,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915130991] [2022-11-18 18:39:40,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:40,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:39:40,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:39:40,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:39:40,742 INFO L87 Difference]: Start difference. First operand 478 states and 698 transitions. Second operand has 17 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 7 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2022-11-18 18:39:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:44,394 INFO L93 Difference]: Finished difference Result 745 states and 1090 transitions. [2022-11-18 18:39:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:39:44,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 7 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) Word has length 242 [2022-11-18 18:39:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:44,400 INFO L225 Difference]: With dead ends: 745 [2022-11-18 18:39:44,400 INFO L226 Difference]: Without dead ends: 400 [2022-11-18 18:39:44,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 466 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:39:44,404 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 187 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:44,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 3104 Invalid, 3282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 2843 Invalid, 0 Unknown, 314 Unchecked, 3.2s Time] [2022-11-18 18:39:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-18 18:39:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 292. [2022-11-18 18:39:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 172 states have (on average 1.186046511627907) internal successors, (204), 175 states have internal predecessors, (204), 93 states have call successors, (93), 23 states have call predecessors, (93), 26 states have return successors, (97), 93 states have call predecessors, (97), 92 states have call successors, (97) [2022-11-18 18:39:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 394 transitions. [2022-11-18 18:39:44,448 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 394 transitions. Word has length 242 [2022-11-18 18:39:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:44,449 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 394 transitions. [2022-11-18 18:39:44,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 7 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (46), 5 states have call predecessors, (46), 6 states have call successors, (46) [2022-11-18 18:39:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 394 transitions. [2022-11-18 18:39:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-18 18:39:44,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:44,454 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:44,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:44,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:44,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:44,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2101338209, now seen corresponding path program 1 times [2022-11-18 18:39:44,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:44,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012081703] [2022-11-18 18:39:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:44,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:44,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:44,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294562475] [2022-11-18 18:39:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:44,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:44,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:44,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:44,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:39:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:45,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 18:39:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:46,192 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 [2022-11-18 18:39:46,198 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 [2022-11-18 18:39:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 237 proven. 4 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-18 18:39:46,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:47,195 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 18:39:47,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-18 18:39:47,207 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-18 18:39:47,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 18:39:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 27 proven. 78 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-18 18:39:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:47,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012081703] [2022-11-18 18:39:47,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:47,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294562475] [2022-11-18 18:39:47,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294562475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:47,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:47,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2022-11-18 18:39:47,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764574317] [2022-11-18 18:39:47,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:47,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:39:47,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:39:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:39:47,331 INFO L87 Difference]: Start difference. First operand 292 states and 394 transitions. Second operand has 22 states, 19 states have (on average 7.052631578947368) internal successors, (134), 18 states have internal predecessors, (134), 9 states have call successors, (59), 4 states have call predecessors, (59), 6 states have return successors, (57), 7 states have call predecessors, (57), 8 states have call successors, (57) [2022-11-18 18:39:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:49,230 INFO L93 Difference]: Finished difference Result 571 states and 787 transitions. [2022-11-18 18:39:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:39:49,231 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.052631578947368) internal successors, (134), 18 states have internal predecessors, (134), 9 states have call successors, (59), 4 states have call predecessors, (59), 6 states have return successors, (57), 7 states have call predecessors, (57), 8 states have call successors, (57) Word has length 253 [2022-11-18 18:39:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:49,235 INFO L225 Difference]: With dead ends: 571 [2022-11-18 18:39:49,236 INFO L226 Difference]: Without dead ends: 305 [2022-11-18 18:39:49,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 488 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:39:49,239 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 81 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 4413 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:49,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 4413 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1232 Invalid, 0 Unknown, 114 Unchecked, 1.4s Time] [2022-11-18 18:39:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-18 18:39:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 295. [2022-11-18 18:39:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 174 states have (on average 1.1839080459770115) internal successors, (206), 178 states have internal predecessors, (206), 93 states have call successors, (93), 23 states have call predecessors, (93), 27 states have return successors, (115), 93 states have call predecessors, (115), 92 states have call successors, (115) [2022-11-18 18:39:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 414 transitions. [2022-11-18 18:39:49,276 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 414 transitions. Word has length 253 [2022-11-18 18:39:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:49,276 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 414 transitions. [2022-11-18 18:39:49,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.052631578947368) internal successors, (134), 18 states have internal predecessors, (134), 9 states have call successors, (59), 4 states have call predecessors, (59), 6 states have return successors, (57), 7 states have call predecessors, (57), 8 states have call successors, (57) [2022-11-18 18:39:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 414 transitions. [2022-11-18 18:39:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-18 18:39:49,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:49,280 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:49,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:39:49,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1612948967, now seen corresponding path program 1 times [2022-11-18 18:39:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:49,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941773112] [2022-11-18 18:39:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:49,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:49,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:49,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849583621] [2022-11-18 18:39:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:49,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:49,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:49,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:49,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:39:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:50,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:39:50,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-11-18 18:39:50,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:50,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:50,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941773112] [2022-11-18 18:39:50,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:50,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849583621] [2022-11-18 18:39:50,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849583621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:50,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:50,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:39:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759439262] [2022-11-18 18:39:50,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:39:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:39:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:50,751 INFO L87 Difference]: Start difference. First operand 295 states and 414 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 18:39:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:51,165 INFO L93 Difference]: Finished difference Result 565 states and 834 transitions. [2022-11-18 18:39:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:39:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 255 [2022-11-18 18:39:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:51,169 INFO L225 Difference]: With dead ends: 565 [2022-11-18 18:39:51,169 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 18:39:51,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:39:51,172 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 10 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:51,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1447 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:39:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 18:39:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-11-18 18:39:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 175 states have (on average 1.1828571428571428) internal successors, (207), 179 states have internal predecessors, (207), 93 states have call successors, (93), 23 states have call predecessors, (93), 27 states have return successors, (115), 93 states have call predecessors, (115), 92 states have call successors, (115) [2022-11-18 18:39:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 415 transitions. [2022-11-18 18:39:51,208 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 415 transitions. Word has length 255 [2022-11-18 18:39:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:51,208 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 415 transitions. [2022-11-18 18:39:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 18:39:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 415 transitions. [2022-11-18 18:39:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-18 18:39:51,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:51,212 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:51,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:51,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:51,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1368188443, now seen corresponding path program 1 times [2022-11-18 18:39:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:51,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915314318] [2022-11-18 18:39:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:51,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:51,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:51,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722848969] [2022-11-18 18:39:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:51,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:51,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:51,539 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:51,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:39:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:52,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 3321 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 18:39:52,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:55,008 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 25 treesize of output 17 [2022-11-18 18:39:55,052 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 13 [2022-11-18 18:39:55,063 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 18 treesize of output 10 [2022-11-18 18:39:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 284 proven. 6 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-18 18:39:55,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:56,334 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 [2022-11-18 18:39:56,337 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-18 18:39:56,502 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 29 treesize of output 17 [2022-11-18 18:39:56,706 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 18:39:56,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 18:39:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-11-18 18:39:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915314318] [2022-11-18 18:39:56,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:56,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722848969] [2022-11-18 18:39:56,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722848969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:56,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:56,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2022-11-18 18:39:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005529484] [2022-11-18 18:39:56,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:56,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 18:39:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 18:39:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 18:39:56,880 INFO L87 Difference]: Start difference. First operand 296 states and 415 transitions. Second operand has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2022-11-18 18:40:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:02,566 INFO L93 Difference]: Finished difference Result 649 states and 918 transitions. [2022-11-18 18:40:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:40:02,567 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) Word has length 255 [2022-11-18 18:40:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:02,571 INFO L225 Difference]: With dead ends: 649 [2022-11-18 18:40:02,571 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 18:40:02,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=254, Invalid=1816, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 18:40:02,574 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 360 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 4887 SdHoareTripleChecker+Invalid, 5625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1638 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:02,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 4887 Invalid, 5625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3911 Invalid, 0 Unknown, 1638 Unchecked, 4.8s Time] [2022-11-18 18:40:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 18:40:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 345. [2022-11-18 18:40:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 207 states have (on average 1.1545893719806763) internal successors, (239), 211 states have internal predecessors, (239), 101 states have call successors, (101), 31 states have call predecessors, (101), 36 states have return successors, (142), 102 states have call predecessors, (142), 100 states have call successors, (142) [2022-11-18 18:40:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 482 transitions. [2022-11-18 18:40:02,620 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 482 transitions. Word has length 255 [2022-11-18 18:40:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:02,621 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 482 transitions. [2022-11-18 18:40:02,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2022-11-18 18:40:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 482 transitions. [2022-11-18 18:40:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-18 18:40:02,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:02,624 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:02,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:02,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:02,839 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1343783589, now seen corresponding path program 1 times [2022-11-18 18:40:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:02,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643940099] [2022-11-18 18:40:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:02,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:02,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223476287] [2022-11-18 18:40:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:02,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:02,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:02,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:02,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:40:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:03,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3321 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-18 18:40:03,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:03,986 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 [2022-11-18 18:40:04,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:04,383 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 [2022-11-18 18:40:04,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:04,398 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 [2022-11-18 18:40:04,592 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2109 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2109) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2108 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2108) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 18:40:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:05,157 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 [2022-11-18 18:40:05,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:05,167 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 [2022-11-18 18:40:05,178 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:40:05,179 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 11 treesize of output 11 [2022-11-18 18:40:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-11-18 18:40:05,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:05,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643940099] [2022-11-18 18:40:05,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:05,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223476287] [2022-11-18 18:40:05,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223476287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:05,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:40:05,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-18 18:40:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660873122] [2022-11-18 18:40:05,851 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:40:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:40:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=4, NotChecked=28, Total=272 [2022-11-18 18:40:05,853 INFO L87 Difference]: Start difference. First operand 345 states and 482 transitions. Second operand has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-18 18:40:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:08,369 INFO L93 Difference]: Finished difference Result 774 states and 1235 transitions. [2022-11-18 18:40:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:40:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) Word has length 255 [2022-11-18 18:40:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:08,375 INFO L225 Difference]: With dead ends: 774 [2022-11-18 18:40:08,375 INFO L226 Difference]: Without dead ends: 500 [2022-11-18 18:40:08,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 441 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=224, Unknown=5, NotChecked=30, Total=306 [2022-11-18 18:40:08,379 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 199 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 4616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2788 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:08,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2182 Invalid, 4616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1709 Invalid, 0 Unknown, 2788 Unchecked, 2.3s Time] [2022-11-18 18:40:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-18 18:40:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 463. [2022-11-18 18:40:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 278 states have (on average 1.183453237410072) internal successors, (329), 287 states have internal predecessors, (329), 139 states have call successors, (139), 33 states have call predecessors, (139), 45 states have return successors, (308), 142 states have call predecessors, (308), 138 states have call successors, (308) [2022-11-18 18:40:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 776 transitions. [2022-11-18 18:40:08,484 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 776 transitions. Word has length 255 [2022-11-18 18:40:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:08,485 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 776 transitions. [2022-11-18 18:40:08,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-18 18:40:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 776 transitions. [2022-11-18 18:40:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-18 18:40:08,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:08,489 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:08,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:08,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:40:08,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 366917770, now seen corresponding path program 1 times [2022-11-18 18:40:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:08,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044563172] [2022-11-18 18:40:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:08,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:08,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466506593] [2022-11-18 18:40:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:08,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:08,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:08,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:08,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:40:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:09,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-18 18:40:09,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:09,964 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 [2022-11-18 18:40:10,178 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 [2022-11-18 18:40:10,223 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 [2022-11-18 18:40:10,340 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 [2022-11-18 18:40:10,402 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:40:10,402 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 [2022-11-18 18:40:10,606 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2350 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2350))) is different from true [2022-11-18 18:40:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:11,057 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 31 treesize of output 19 [2022-11-18 18:40:11,068 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:40:11,068 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 11 treesize of output 11 [2022-11-18 18:41:15,980 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2351 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2351)))) is different from true [2022-11-18 18:41:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 312 proven. 41 refuted. 0 times theorem prover too weak. 201 trivial. 3 not checked. [2022-11-18 18:41:24,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:26,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:26,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044563172] [2022-11-18 18:41:26,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:41:26,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466506593] [2022-11-18 18:41:26,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466506593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:26,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:41:26,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-18 18:41:26,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390781007] [2022-11-18 18:41:26,903 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:26,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 18:41:26,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 18:41:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=844, Unknown=61, NotChecked=122, Total=1122 [2022-11-18 18:41:26,906 INFO L87 Difference]: Start difference. First operand 463 states and 776 transitions. Second operand has 33 states, 30 states have (on average 3.7) internal successors, (111), 28 states have internal predecessors, (111), 12 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2022-11-18 18:41:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:50,197 INFO L93 Difference]: Finished difference Result 912 states and 1549 transitions. [2022-11-18 18:41:50,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:41:50,198 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 3.7) internal successors, (111), 28 states have internal predecessors, (111), 12 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) Word has length 261 [2022-11-18 18:41:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:50,204 INFO L225 Difference]: With dead ends: 912 [2022-11-18 18:41:50,204 INFO L226 Difference]: Without dead ends: 534 [2022-11-18 18:41:50,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 362 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 96.9s TimeCoverageRelationStatistics Valid=238, Invalid=2126, Unknown=94, NotChecked=194, Total=2652 [2022-11-18 18:41:50,210 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 401 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 6505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4090 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:50,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 3033 Invalid, 6505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1905 Invalid, 0 Unknown, 4090 Unchecked, 2.0s Time] [2022-11-18 18:41:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-18 18:41:50,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 502. [2022-11-18 18:41:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 302 states have (on average 1.1721854304635762) internal successors, (354), 312 states have internal predecessors, (354), 148 states have call successors, (148), 38 states have call predecessors, (148), 51 states have return successors, (324), 151 states have call predecessors, (324), 147 states have call successors, (324) [2022-11-18 18:41:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 826 transitions. [2022-11-18 18:41:50,286 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 826 transitions. Word has length 261 [2022-11-18 18:41:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:50,287 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 826 transitions. [2022-11-18 18:41:50,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 3.7) internal successors, (111), 28 states have internal predecessors, (111), 12 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2022-11-18 18:41:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 826 transitions. [2022-11-18 18:41:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-18 18:41:50,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:50,292 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:50,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:50,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:41:50,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash -331499523, now seen corresponding path program 1 times [2022-11-18 18:41:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:50,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111915806] [2022-11-18 18:41:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:50,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:41:50,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732856381] [2022-11-18 18:41:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:50,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:50,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:50,622 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:50,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:41:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:41:51,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 349 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-18 18:41:52,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 46 proven. 81 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-18 18:41:53,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:53,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111915806] [2022-11-18 18:41:53,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:41:53,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732856381] [2022-11-18 18:41:53,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732856381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:53,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:53,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 31 [2022-11-18 18:41:53,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712841793] [2022-11-18 18:41:53,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 18:41:53,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 18:41:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2022-11-18 18:41:53,318 INFO L87 Difference]: Start difference. First operand 502 states and 826 transitions. Second operand has 31 states, 27 states have (on average 5.333333333333333) internal successors, (144), 22 states have internal predecessors, (144), 7 states have call successors, (51), 3 states have call predecessors, (51), 10 states have return successors, (53), 10 states have call predecessors, (53), 6 states have call successors, (53) [2022-11-18 18:41:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:54,702 INFO L93 Difference]: Finished difference Result 877 states and 1486 transitions. [2022-11-18 18:41:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:41:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.333333333333333) internal successors, (144), 22 states have internal predecessors, (144), 7 states have call successors, (51), 3 states have call predecessors, (51), 10 states have return successors, (53), 10 states have call predecessors, (53), 6 states have call successors, (53) Word has length 296 [2022-11-18 18:41:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:54,708 INFO L225 Difference]: With dead ends: 877 [2022-11-18 18:41:54,709 INFO L226 Difference]: Without dead ends: 502 [2022-11-18 18:41:54,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 18:41:54,714 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 40 mSDsluCounter, 8622 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8992 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:54,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 8992 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:41:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-11-18 18:41:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2022-11-18 18:41:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 302 states have (on average 1.1721854304635762) internal successors, (354), 312 states have internal predecessors, (354), 148 states have call successors, (148), 38 states have call predecessors, (148), 51 states have return successors, (319), 151 states have call predecessors, (319), 147 states have call successors, (319) [2022-11-18 18:41:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 821 transitions. [2022-11-18 18:41:54,833 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 821 transitions. Word has length 296 [2022-11-18 18:41:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 821 transitions. [2022-11-18 18:41:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.333333333333333) internal successors, (144), 22 states have internal predecessors, (144), 7 states have call successors, (51), 3 states have call predecessors, (51), 10 states have return successors, (53), 10 states have call predecessors, (53), 6 states have call successors, (53) [2022-11-18 18:41:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 821 transitions. [2022-11-18 18:41:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-18 18:41:54,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:54,840 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:54,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:55,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:41:55,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1844390939, now seen corresponding path program 1 times [2022-11-18 18:41:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:55,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942634725] [2022-11-18 18:41:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:55,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:41:55,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560494355] [2022-11-18 18:41:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:55,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:55,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:55,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:55,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:41:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:56,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 3373 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 18:41:56,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:57,233 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2727 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2724 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2724))) (= |c_#memory_$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_2727))))) is different from true [2022-11-18 18:42:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 349 proven. 3 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-18 18:42:07,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942634725] [2022-11-18 18:42:09,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:09,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560494355] [2022-11-18 18:42:09,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560494355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:09,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:09,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-18 18:42:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49639537] [2022-11-18 18:42:09,962 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:09,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:42:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:42:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=243, Unknown=18, NotChecked=32, Total=342 [2022-11-18 18:42:09,964 INFO L87 Difference]: Start difference. First operand 502 states and 821 transitions. Second operand has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 8 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2022-11-18 18:42:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:12,792 INFO L93 Difference]: Finished difference Result 998 states and 1708 transitions. [2022-11-18 18:42:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:42:12,793 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 8 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) Word has length 266 [2022-11-18 18:42:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:12,800 INFO L225 Difference]: With dead ends: 998 [2022-11-18 18:42:12,800 INFO L226 Difference]: Without dead ends: 617 [2022-11-18 18:42:12,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 386 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=75, Invalid=373, Unknown=18, NotChecked=40, Total=506 [2022-11-18 18:42:12,804 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 159 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 3408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1058 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:12,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 2036 Invalid, 3408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2256 Invalid, 0 Unknown, 1058 Unchecked, 2.5s Time] [2022-11-18 18:42:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-18 18:42:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 532. [2022-11-18 18:42:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 323 states have (on average 1.1578947368421053) internal successors, (374), 334 states have internal predecessors, (374), 151 states have call successors, (151), 45 states have call predecessors, (151), 57 states have return successors, (381), 152 states have call predecessors, (381), 150 states have call successors, (381) [2022-11-18 18:42:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 906 transitions. [2022-11-18 18:42:12,897 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 906 transitions. Word has length 266 [2022-11-18 18:42:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:12,898 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 906 transitions. [2022-11-18 18:42:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 8 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2022-11-18 18:42:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 906 transitions. [2022-11-18 18:42:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-18 18:42:12,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:12,903 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:12,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-18 18:42:13,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:13,114 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 162737859, now seen corresponding path program 1 times [2022-11-18 18:42:13,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:13,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533919713] [2022-11-18 18:42:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:13,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:13,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266774926] [2022-11-18 18:42:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:13,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:13,209 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:13,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:42:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 18:42:14,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 375 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-18 18:42:14,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-11-18 18:42:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533919713] [2022-11-18 18:42:15,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266774926] [2022-11-18 18:42:15,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266774926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:15,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:15,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 28 [2022-11-18 18:42:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36230870] [2022-11-18 18:42:15,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:42:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:42:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:42:15,684 INFO L87 Difference]: Start difference. First operand 532 states and 906 transitions. Second operand has 28 states, 24 states have (on average 6.041666666666667) internal successors, (145), 19 states have internal predecessors, (145), 7 states have call successors, (51), 3 states have call predecessors, (51), 9 states have return successors, (54), 11 states have call predecessors, (54), 6 states have call successors, (54) [2022-11-18 18:42:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:16,793 INFO L93 Difference]: Finished difference Result 835 states and 1405 transitions. [2022-11-18 18:42:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:42:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 6.041666666666667) internal successors, (145), 19 states have internal predecessors, (145), 7 states have call successors, (51), 3 states have call predecessors, (51), 9 states have return successors, (54), 11 states have call predecessors, (54), 6 states have call successors, (54) Word has length 280 [2022-11-18 18:42:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:16,799 INFO L225 Difference]: With dead ends: 835 [2022-11-18 18:42:16,799 INFO L226 Difference]: Without dead ends: 469 [2022-11-18 18:42:16,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 528 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:42:16,803 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 45 mSDsluCounter, 7606 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 7979 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:16,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 7979 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:42:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-18 18:42:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 461. [2022-11-18 18:42:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 286 states have (on average 1.1398601398601398) internal successors, (326), 297 states have internal predecessors, (326), 118 states have call successors, (118), 45 states have call predecessors, (118), 56 states have return successors, (262), 118 states have call predecessors, (262), 117 states have call successors, (262) [2022-11-18 18:42:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 706 transitions. [2022-11-18 18:42:16,909 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 706 transitions. Word has length 280 [2022-11-18 18:42:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:16,910 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 706 transitions. [2022-11-18 18:42:16,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 6.041666666666667) internal successors, (145), 19 states have internal predecessors, (145), 7 states have call successors, (51), 3 states have call predecessors, (51), 9 states have return successors, (54), 11 states have call predecessors, (54), 6 states have call successors, (54) [2022-11-18 18:42:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 706 transitions. [2022-11-18 18:42:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-18 18:42:16,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:16,914 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:16,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:42:17,127 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1719608781, now seen corresponding path program 1 times [2022-11-18 18:42:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:17,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165488596] [2022-11-18 18:42:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:17,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:17,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189917380] [2022-11-18 18:42:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:17,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:17,220 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:17,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:42:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:18,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 3366 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-18 18:42:18,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:18,308 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 [2022-11-18 18:42:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:18,646 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 [2022-11-18 18:42:18,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:18,657 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 [2022-11-18 18:42:18,828 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3168 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3168) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3167 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3167) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 18:42:19,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:19,068 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 [2022-11-18 18:42:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:19,080 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 [2022-11-18 18:42:19,096 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:19,096 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 11 treesize of output 11 [2022-11-18 18:42:19,742 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 [2022-11-18 18:42:19,745 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 [2022-11-18 18:42:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 279 proven. 20 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-18 18:42:19,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165488596] [2022-11-18 18:42:20,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189917380] [2022-11-18 18:42:20,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189917380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:20,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:20,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-18 18:42:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809927508] [2022-11-18 18:42:20,374 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:42:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:42:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-11-18 18:42:20,376 INFO L87 Difference]: Start difference. First operand 461 states and 706 transitions. Second operand has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-18 18:42:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:22,310 INFO L93 Difference]: Finished difference Result 825 states and 1311 transitions. [2022-11-18 18:42:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:42:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 262 [2022-11-18 18:42:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:22,315 INFO L225 Difference]: With dead ends: 825 [2022-11-18 18:42:22,316 INFO L226 Difference]: Without dead ends: 477 [2022-11-18 18:42:22,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 446 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=383, Unknown=3, NotChecked=40, Total=506 [2022-11-18 18:42:22,319 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 181 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1507 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:22,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1932 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1455 Invalid, 0 Unknown, 1507 Unchecked, 1.7s Time] [2022-11-18 18:42:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-18 18:42:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 461. [2022-11-18 18:42:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 286 states have (on average 1.1398601398601398) internal successors, (326), 297 states have internal predecessors, (326), 118 states have call successors, (118), 45 states have call predecessors, (118), 56 states have return successors, (261), 118 states have call predecessors, (261), 117 states have call successors, (261) [2022-11-18 18:42:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 705 transitions. [2022-11-18 18:42:22,390 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 705 transitions. Word has length 262 [2022-11-18 18:42:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:22,391 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 705 transitions. [2022-11-18 18:42:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-18 18:42:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 705 transitions. [2022-11-18 18:42:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-18 18:42:22,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:22,395 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:22,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:22,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:42:22,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1367480211, now seen corresponding path program 1 times [2022-11-18 18:42:22,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:22,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692682426] [2022-11-18 18:42:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:22,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:22,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:22,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952091884] [2022-11-18 18:42:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:22,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:22,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:22,725 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:22,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 18:42:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:23,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 3383 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:42:23,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-18 18:42:23,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:23,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:23,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692682426] [2022-11-18 18:42:23,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:23,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952091884] [2022-11-18 18:42:23,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952091884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:23,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:23,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:42:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392469471] [2022-11-18 18:42:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:23,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:42:23,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:42:23,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:23,908 INFO L87 Difference]: Start difference. First operand 461 states and 705 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 18:42:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:24,302 INFO L93 Difference]: Finished difference Result 769 states and 1234 transitions. [2022-11-18 18:42:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:24,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 280 [2022-11-18 18:42:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:24,306 INFO L225 Difference]: With dead ends: 769 [2022-11-18 18:42:24,307 INFO L226 Difference]: Without dead ends: 418 [2022-11-18 18:42:24,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:24,310 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 13 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:24,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1382 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:42:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-18 18:42:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-18 18:42:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 258 states have (on average 1.1434108527131783) internal successors, (295), 267 states have internal predecessors, (295), 111 states have call successors, (111), 39 states have call predecessors, (111), 48 states have return successors, (213), 111 states have call predecessors, (213), 110 states have call successors, (213) [2022-11-18 18:42:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 619 transitions. [2022-11-18 18:42:24,364 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 619 transitions. Word has length 280 [2022-11-18 18:42:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:24,365 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 619 transitions. [2022-11-18 18:42:24,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 18:42:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 619 transitions. [2022-11-18 18:42:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-18 18:42:24,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:24,369 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:24,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:24,584 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash -692345568, now seen corresponding path program 1 times [2022-11-18 18:42:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:24,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415742485] [2022-11-18 18:42:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:24,701 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:24,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765727981] [2022-11-18 18:42:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:24,703 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:24,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 18:42:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:25,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 3417 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 18:42:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 302 proven. 8 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 18:42:26,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 63 proven. 31 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-11-18 18:42:27,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:27,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415742485] [2022-11-18 18:42:27,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:27,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765727981] [2022-11-18 18:42:27,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765727981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:27,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:27,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 28 [2022-11-18 18:42:27,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388425381] [2022-11-18 18:42:27,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:42:27,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:42:27,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:42:27,190 INFO L87 Difference]: Start difference. First operand 418 states and 619 transitions. Second operand has 28 states, 24 states have (on average 5.958333333333333) internal successors, (143), 19 states have internal predecessors, (143), 7 states have call successors, (48), 3 states have call predecessors, (48), 9 states have return successors, (51), 11 states have call predecessors, (51), 6 states have call successors, (51) [2022-11-18 18:42:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:28,428 INFO L93 Difference]: Finished difference Result 710 states and 1074 transitions. [2022-11-18 18:42:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:42:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.958333333333333) internal successors, (143), 19 states have internal predecessors, (143), 7 states have call successors, (48), 3 states have call predecessors, (48), 9 states have return successors, (51), 11 states have call predecessors, (51), 6 states have call successors, (51) Word has length 286 [2022-11-18 18:42:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:28,433 INFO L225 Difference]: With dead ends: 710 [2022-11-18 18:42:28,434 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 18:42:28,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 540 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:42:28,441 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 45 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8505 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:28,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 8505 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 18:42:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 18:42:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2022-11-18 18:42:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 258 states have (on average 1.1434108527131783) internal successors, (295), 267 states have internal predecessors, (295), 111 states have call successors, (111), 39 states have call predecessors, (111), 48 states have return successors, (210), 111 states have call predecessors, (210), 110 states have call successors, (210) [2022-11-18 18:42:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 616 transitions. [2022-11-18 18:42:28,503 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 616 transitions. Word has length 286 [2022-11-18 18:42:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:28,504 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 616 transitions. [2022-11-18 18:42:28,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.958333333333333) internal successors, (143), 19 states have internal predecessors, (143), 7 states have call successors, (48), 3 states have call predecessors, (48), 9 states have return successors, (51), 11 states have call predecessors, (51), 6 states have call successors, (51) [2022-11-18 18:42:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 616 transitions. [2022-11-18 18:42:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-18 18:42:28,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:28,507 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:28,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:28,728 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1551063210, now seen corresponding path program 2 times [2022-11-18 18:42:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078663541] [2022-11-18 18:42:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:28,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:28,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860422061] [2022-11-18 18:42:28,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:28,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:28,837 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:28,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 18:42:30,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:30,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:30,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 3413 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 18:42:30,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 204 proven. 9 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-18 18:42:30,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 76 proven. 15 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2022-11-18 18:42:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:31,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078663541] [2022-11-18 18:42:31,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:31,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860422061] [2022-11-18 18:42:31,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860422061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:31,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:31,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 27 [2022-11-18 18:42:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332324277] [2022-11-18 18:42:31,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:31,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:42:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:42:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:42:31,679 INFO L87 Difference]: Start difference. First operand 418 states and 616 transitions. Second operand has 27 states, 23 states have (on average 6.0) internal successors, (138), 18 states have internal predecessors, (138), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (49), 11 states have call predecessors, (49), 6 states have call successors, (49) [2022-11-18 18:42:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:32,824 INFO L93 Difference]: Finished difference Result 707 states and 1061 transitions. [2022-11-18 18:42:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:42:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 6.0) internal successors, (138), 18 states have internal predecessors, (138), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (49), 11 states have call predecessors, (49), 6 states have call successors, (49) Word has length 280 [2022-11-18 18:42:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:32,829 INFO L225 Difference]: With dead ends: 707 [2022-11-18 18:42:32,829 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 18:42:32,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 529 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:42:32,833 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 34 mSDsluCounter, 8200 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 8568 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:32,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 8568 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:42:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 18:42:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2022-11-18 18:42:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 258 states have (on average 1.1434108527131783) internal successors, (295), 267 states have internal predecessors, (295), 111 states have call successors, (111), 39 states have call predecessors, (111), 48 states have return successors, (207), 111 states have call predecessors, (207), 110 states have call successors, (207) [2022-11-18 18:42:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 613 transitions. [2022-11-18 18:42:32,886 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 613 transitions. Word has length 280 [2022-11-18 18:42:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:32,887 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 613 transitions. [2022-11-18 18:42:32,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 6.0) internal successors, (138), 18 states have internal predecessors, (138), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (49), 11 states have call predecessors, (49), 6 states have call successors, (49) [2022-11-18 18:42:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 613 transitions. [2022-11-18 18:42:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-18 18:42:32,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:32,891 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:32,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:33,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:33,107 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1537816642, now seen corresponding path program 1 times [2022-11-18 18:42:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:33,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301583578] [2022-11-18 18:42:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:33,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460645544] [2022-11-18 18:42:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:33,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:33,210 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:33,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 18:42:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:34,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 3405 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-18 18:42:34,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:34,466 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:42:34,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:42:34,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:34,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 18:42:34,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:34,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 18:42:34,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:34,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 18:42:34,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:34,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 18:42:34,928 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4060 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4060)))) (exists ((v_ArrVal_4059 Int)) (= |c_#memory_$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_4059))))) is different from true [2022-11-18 18:42:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 18:42:35,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:35,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301583578] [2022-11-18 18:42:35,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460645544] [2022-11-18 18:42:35,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460645544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:35,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:35,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 18:42:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017995629] [2022-11-18 18:42:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:35,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:42:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:42:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=200, Unknown=1, NotChecked=28, Total=272 [2022-11-18 18:42:35,401 INFO L87 Difference]: Start difference. First operand 418 states and 613 transitions. Second operand has 17 states, 16 states have (on average 6.5625) internal successors, (105), 15 states have internal predecessors, (105), 7 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (34), 6 states have call predecessors, (34), 7 states have call successors, (34) [2022-11-18 18:42:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:37,316 INFO L93 Difference]: Finished difference Result 773 states and 1168 transitions. [2022-11-18 18:42:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:42:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.5625) internal successors, (105), 15 states have internal predecessors, (105), 7 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (34), 6 states have call predecessors, (34), 7 states have call successors, (34) Word has length 268 [2022-11-18 18:42:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:37,323 INFO L225 Difference]: With dead ends: 773 [2022-11-18 18:42:37,323 INFO L226 Difference]: Without dead ends: 472 [2022-11-18 18:42:37,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=285, Unknown=1, NotChecked=34, Total=380 [2022-11-18 18:42:37,326 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 148 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2036 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:37,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1748 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1274 Invalid, 0 Unknown, 2036 Unchecked, 1.6s Time] [2022-11-18 18:42:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-11-18 18:42:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 422. [2022-11-18 18:42:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 261 states have (on average 1.1417624521072798) internal successors, (298), 270 states have internal predecessors, (298), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (206), 111 states have call predecessors, (206), 110 states have call successors, (206) [2022-11-18 18:42:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 615 transitions. [2022-11-18 18:42:37,384 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 615 transitions. Word has length 268 [2022-11-18 18:42:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:37,384 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 615 transitions. [2022-11-18 18:42:37,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.5625) internal successors, (105), 15 states have internal predecessors, (105), 7 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (34), 6 states have call predecessors, (34), 7 states have call successors, (34) [2022-11-18 18:42:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 615 transitions. [2022-11-18 18:42:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-18 18:42:37,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:37,388 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:37,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:37,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 18:42:37,603 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -155647302, now seen corresponding path program 1 times [2022-11-18 18:42:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:37,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743434763] [2022-11-18 18:42:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:37,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:37,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727148274] [2022-11-18 18:42:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:37,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:37,707 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:37,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 18:42:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:38,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 158 conjunts are in the unsatisfiable core [2022-11-18 18:42:38,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:38,923 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 [2022-11-18 18:42:39,104 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 [2022-11-18 18:42:39,144 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 [2022-11-18 18:42:39,255 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 [2022-11-18 18:42:39,313 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:39,314 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 [2022-11-18 18:42:39,509 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4275 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4275))) is different from true [2022-11-18 18:42:40,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:40,133 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 [2022-11-18 18:42:40,151 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:40,151 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 11 treesize of output 11 [2022-11-18 18:42:40,497 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 [2022-11-18 18:42:41,599 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4276 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4277 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4276)) (= |c_#memory_$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_4277))))) is different from true [2022-11-18 18:42:41,964 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4276 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4277 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4276)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4277)) |c_#memory_$Pointer$.base|))) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) is different from true [2022-11-18 18:42:42,019 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 43 treesize of output 31 [2022-11-18 18:42:42,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:42,025 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 [2022-11-18 18:42:42,036 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 6 [2022-11-18 18:43:26,940 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4280 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4280)))) is different from true [2022-11-18 18:43:35,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 323 proven. 112 refuted. 2 times theorem prover too weak. 110 trivial. 16 not checked. [2022-11-18 18:43:35,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:37,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743434763] [2022-11-18 18:43:37,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:37,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727148274] [2022-11-18 18:43:37,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727148274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:37,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:37,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-11-18 18:43:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611293158] [2022-11-18 18:43:37,928 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:37,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 18:43:37,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 18:43:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1736, Unknown=105, NotChecked=356, Total=2352 [2022-11-18 18:43:37,931 INFO L87 Difference]: Start difference. First operand 422 states and 615 transitions. Second operand has 48 states, 43 states have (on average 3.0930232558139537) internal successors, (133), 40 states have internal predecessors, (133), 17 states have call successors, (39), 13 states have call predecessors, (39), 15 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-11-18 18:44:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:01,221 INFO L93 Difference]: Finished difference Result 798 states and 1189 transitions. [2022-11-18 18:44:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 18:44:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 3.0930232558139537) internal successors, (133), 40 states have internal predecessors, (133), 17 states have call successors, (39), 13 states have call predecessors, (39), 15 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 269 [2022-11-18 18:44:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:01,230 INFO L225 Difference]: With dead ends: 798 [2022-11-18 18:44:01,230 INFO L226 Difference]: Without dead ends: 505 [2022-11-18 18:44:01,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 330 SyntacticMatches, 13 SemanticMatches, 70 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 77.4s TimeCoverageRelationStatistics Valid=402, Invalid=3997, Unknown=173, NotChecked=540, Total=5112 [2022-11-18 18:44:01,234 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 525 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 9584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5991 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:01,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 3461 Invalid, 9584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2948 Invalid, 0 Unknown, 5991 Unchecked, 3.0s Time] [2022-11-18 18:44:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-18 18:44:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 477. [2022-11-18 18:44:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 295 states have (on average 1.1288135593220339) internal successors, (333), 305 states have internal predecessors, (333), 124 states have call successors, (124), 48 states have call predecessors, (124), 57 states have return successors, (225), 123 states have call predecessors, (225), 123 states have call successors, (225) [2022-11-18 18:44:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 682 transitions. [2022-11-18 18:44:01,350 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 682 transitions. Word has length 269 [2022-11-18 18:44:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:01,351 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 682 transitions. [2022-11-18 18:44:01,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 3.0930232558139537) internal successors, (133), 40 states have internal predecessors, (133), 17 states have call successors, (39), 13 states have call predecessors, (39), 15 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-11-18 18:44:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 682 transitions. [2022-11-18 18:44:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-18 18:44:01,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:01,355 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:01,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:01,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 18:44:01,570 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 268589562, now seen corresponding path program 1 times [2022-11-18 18:44:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:01,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629095979] [2022-11-18 18:44:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:01,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:01,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38096195] [2022-11-18 18:44:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:01,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:01,686 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:01,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 18:44:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:02,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-18 18:44:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:02,938 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 [2022-11-18 18:44:03,141 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 [2022-11-18 18:44:03,186 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 [2022-11-18 18:44:03,305 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 [2022-11-18 18:44:03,360 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:44:03,361 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 [2022-11-18 18:44:03,555 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4500 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4500))) is different from true [2022-11-18 18:44:03,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:03,952 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 31 treesize of output 19 [2022-11-18 18:44:03,965 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:44:03,965 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 11 treesize of output 11 [2022-11-18 18:45:08,795 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4502 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4502)))) is different from true [2022-11-18 18:45:08,807 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4502 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4502)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 18:45:08,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:08,839 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 [2022-11-18 18:45:41,357 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4504 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4504)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 18:45:49,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:49,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:45:49,794 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-18 18:45:49,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-18 18:45:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 325 proven. 55 refuted. 0 times theorem prover too weak. 158 trivial. 25 not checked. [2022-11-18 18:45:49,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:45:52,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:52,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629095979] [2022-11-18 18:45:52,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:45:52,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38096195] [2022-11-18 18:45:52,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38096195] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:45:52,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:45:52,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-11-18 18:45:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76978860] [2022-11-18 18:45:52,183 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:45:52,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 18:45:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 18:45:52,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1033, Unknown=64, NotChecked=276, Total=1482 [2022-11-18 18:45:52,185 INFO L87 Difference]: Start difference. First operand 477 states and 682 transitions. Second operand has 38 states, 33 states have (on average 3.8181818181818183) internal successors, (126), 33 states have internal predecessors, (126), 14 states have call successors, (38), 10 states have call predecessors, (38), 13 states have return successors, (36), 13 states have call predecessors, (36), 14 states have call successors, (36) [2022-11-18 18:46:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:18,137 INFO L93 Difference]: Finished difference Result 810 states and 1205 transitions. [2022-11-18 18:46:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:46:18,138 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 3.8181818181818183) internal successors, (126), 33 states have internal predecessors, (126), 14 states have call successors, (38), 10 states have call predecessors, (38), 13 states have return successors, (36), 13 states have call predecessors, (36), 14 states have call successors, (36) Word has length 269 [2022-11-18 18:46:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:18,142 INFO L225 Difference]: With dead ends: 810 [2022-11-18 18:46:18,142 INFO L226 Difference]: Without dead ends: 517 [2022-11-18 18:46:18,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 334 SyntacticMatches, 15 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 131.6s TimeCoverageRelationStatistics Valid=303, Invalid=2803, Unknown=102, NotChecked=452, Total=3660 [2022-11-18 18:46:18,145 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 335 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 8244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5228 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:18,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 3306 Invalid, 8244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2623 Invalid, 0 Unknown, 5228 Unchecked, 2.4s Time] [2022-11-18 18:46:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-18 18:46:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 477. [2022-11-18 18:46:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 295 states have (on average 1.1288135593220339) internal successors, (333), 305 states have internal predecessors, (333), 124 states have call successors, (124), 48 states have call predecessors, (124), 57 states have return successors, (225), 123 states have call predecessors, (225), 123 states have call successors, (225) [2022-11-18 18:46:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 682 transitions. [2022-11-18 18:46:18,210 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 682 transitions. Word has length 269 [2022-11-18 18:46:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:18,211 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 682 transitions. [2022-11-18 18:46:18,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 3.8181818181818183) internal successors, (126), 33 states have internal predecessors, (126), 14 states have call successors, (38), 10 states have call predecessors, (38), 13 states have return successors, (36), 13 states have call predecessors, (36), 14 states have call successors, (36) [2022-11-18 18:46:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 682 transitions. [2022-11-18 18:46:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-18 18:46:18,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:18,215 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:18,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:18,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:18,431 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash -144091829, now seen corresponding path program 1 times [2022-11-18 18:46:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:18,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173658557] [2022-11-18 18:46:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:18,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:18,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841625754] [2022-11-18 18:46:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:18,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:18,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:18,534 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:18,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 18:46:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:19,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 3382 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-18 18:46:19,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:19,683 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 [2022-11-18 18:46:20,233 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4719 Int)) (= |c_#memory_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_4719)))) is different from true [2022-11-18 18:46:20,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:20,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:46:20,528 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 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-18 18:46:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 350 proven. 4 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-18 18:46:20,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:20,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173658557] [2022-11-18 18:46:20,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841625754] [2022-11-18 18:46:20,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841625754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:46:20,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:46:20,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-18 18:46:20,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835429701] [2022-11-18 18:46:20,959 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:20,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:46:20,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:20,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:46:20,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=201, Unknown=1, NotChecked=28, Total=272 [2022-11-18 18:46:20,961 INFO L87 Difference]: Start difference. First operand 477 states and 682 transitions. Second operand has 16 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2022-11-18 18:46:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:23,390 INFO L93 Difference]: Finished difference Result 831 states and 1242 transitions. [2022-11-18 18:46:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:46:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 274 [2022-11-18 18:46:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:23,395 INFO L225 Difference]: With dead ends: 831 [2022-11-18 18:46:23,396 INFO L226 Difference]: Without dead ends: 518 [2022-11-18 18:46:23,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 366 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=352, Unknown=1, NotChecked=38, Total=462 [2022-11-18 18:46:23,399 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 159 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1178 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1655 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2024 Invalid, 0 Unknown, 1178 Unchecked, 2.2s Time] [2022-11-18 18:46:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-18 18:46:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 477. [2022-11-18 18:46:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 295 states have (on average 1.1288135593220339) internal successors, (333), 305 states have internal predecessors, (333), 124 states have call successors, (124), 48 states have call predecessors, (124), 57 states have return successors, (223), 123 states have call predecessors, (223), 123 states have call successors, (223) [2022-11-18 18:46:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 680 transitions. [2022-11-18 18:46:23,463 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 680 transitions. Word has length 274 [2022-11-18 18:46:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:23,464 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 680 transitions. [2022-11-18 18:46:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2022-11-18 18:46:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 680 transitions. [2022-11-18 18:46:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-18 18:46:23,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:23,468 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:23,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:23,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:23,682 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1670013013, now seen corresponding path program 2 times [2022-11-18 18:46:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:23,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961793774] [2022-11-18 18:46:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:23,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:23,765 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:23,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241563867] [2022-11-18 18:46:23,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:46:23,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:23,768 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:23,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 18:46:25,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:46:25,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 18:46:25,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:25,660 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4950 Int) (v_ArrVal_4951 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4951)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4950))))) is different from true [2022-11-18 18:46:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:34,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:46:34,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-18 18:46:34,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:34,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:46:34,574 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-18 18:46:34,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-18 18:46:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 387 proven. 3 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-18 18:46:34,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:37,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961793774] [2022-11-18 18:46:37,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:37,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241563867] [2022-11-18 18:46:37,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241563867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:46:37,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:46:37,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-18 18:46:37,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412531333] [2022-11-18 18:46:37,025 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:37,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:46:37,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:46:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=307, Unknown=22, NotChecked=36, Total=420 [2022-11-18 18:46:37,027 INFO L87 Difference]: Start difference. First operand 477 states and 680 transitions. Second operand has 20 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 8 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2022-11-18 18:46:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:39,317 INFO L93 Difference]: Finished difference Result 796 states and 1180 transitions. [2022-11-18 18:46:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:46:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 8 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) Word has length 268 [2022-11-18 18:46:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:39,321 INFO L225 Difference]: With dead ends: 796 [2022-11-18 18:46:39,321 INFO L226 Difference]: Without dead ends: 500 [2022-11-18 18:46:39,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 357 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=96, Invalid=536, Unknown=22, NotChecked=48, Total=702 [2022-11-18 18:46:39,324 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 148 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1617 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:39,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1986 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1887 Invalid, 0 Unknown, 1617 Unchecked, 2.0s Time] [2022-11-18 18:46:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-18 18:46:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 451. [2022-11-18 18:46:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 278 states have (on average 1.1330935251798562) internal successors, (315), 288 states have internal predecessors, (315), 119 states have call successors, (119), 44 states have call predecessors, (119), 53 states have return successors, (218), 118 states have call predecessors, (218), 118 states have call successors, (218) [2022-11-18 18:46:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 652 transitions. [2022-11-18 18:46:39,389 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 652 transitions. Word has length 268 [2022-11-18 18:46:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:39,390 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 652 transitions. [2022-11-18 18:46:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 8 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2022-11-18 18:46:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 652 transitions. [2022-11-18 18:46:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-18 18:46:39,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:39,393 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:39,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:39,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 18:46:39,607 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash -628238344, now seen corresponding path program 2 times [2022-11-18 18:46:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:39,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963321232] [2022-11-18 18:46:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:39,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:39,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325627325] [2022-11-18 18:46:39,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:46:39,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:39,703 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:39,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 18:46:41,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:46:41,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:41,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 3410 conjuncts, 221 conjunts are in the unsatisfiable core [2022-11-18 18:46:41,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:41,851 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 [2022-11-18 18:46:41,856 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 [2022-11-18 18:46:42,040 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 [2022-11-18 18:46:42,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:46:42,201 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 [2022-11-18 18:46:42,274 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:46:42,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:46:42,508 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5228 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5228))) is different from true [2022-11-18 18:46:42,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:42,632 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 [2022-11-18 18:46:42,644 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:46:42,645 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 11 treesize of output 11 [2022-11-18 18:46:43,689 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:46:43,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:46:43,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:43,802 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 [2022-11-18 18:46:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:43,990 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 [2022-11-18 18:46:44,244 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5236 Int)) (= |c_#memory_$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_5236)))) is different from true [2022-11-18 18:46:44,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:44,976 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 39 treesize of output 27 [2022-11-18 18:47:02,073 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5237 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5237)))) is different from true [2022-11-18 18:47:10,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:47:10,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:47:10,742 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-18 18:47:10,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-18 18:47:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 382 proven. 94 refuted. 5 times theorem prover too weak. 117 trivial. 9 not checked. [2022-11-18 18:47:10,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:47:13,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:13,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963321232] [2022-11-18 18:47:13,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:47:13,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325627325] [2022-11-18 18:47:13,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325627325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:13,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:47:13,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2022-11-18 18:47:13,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952521521] [2022-11-18 18:47:13,525 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:47:13,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 18:47:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 18:47:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2881, Unknown=131, NotChecked=336, Total=3540 [2022-11-18 18:47:13,528 INFO L87 Difference]: Start difference. First operand 451 states and 652 transitions. Second operand has 56 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 20 states have call successors, (39), 12 states have call predecessors, (39), 18 states have return successors, (37), 20 states have call predecessors, (37), 19 states have call successors, (37) [2022-11-18 18:47:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:24,081 INFO L93 Difference]: Finished difference Result 819 states and 1205 transitions. [2022-11-18 18:47:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 18:47:24,082 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 20 states have call successors, (39), 12 states have call predecessors, (39), 18 states have return successors, (37), 20 states have call predecessors, (37), 19 states have call successors, (37) Word has length 270 [2022-11-18 18:47:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:24,086 INFO L225 Difference]: With dead ends: 819 [2022-11-18 18:47:24,086 INFO L226 Difference]: Without dead ends: 526 [2022-11-18 18:47:24,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 313 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=401, Invalid=6084, Unknown=169, NotChecked=486, Total=7140 [2022-11-18 18:47:24,091 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 301 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 4100 SdHoareTripleChecker+Invalid, 7821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4131 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:24,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 4100 Invalid, 7821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 3311 Invalid, 0 Unknown, 4131 Unchecked, 2.9s Time] [2022-11-18 18:47:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-11-18 18:47:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 505. [2022-11-18 18:47:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 312 states have (on average 1.1185897435897436) internal successors, (349), 322 states have internal predecessors, (349), 132 states have call successors, (132), 52 states have call predecessors, (132), 60 states have return successors, (233), 130 states have call predecessors, (233), 131 states have call successors, (233) [2022-11-18 18:47:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 714 transitions. [2022-11-18 18:47:24,179 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 714 transitions. Word has length 270 [2022-11-18 18:47:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:24,179 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 714 transitions. [2022-11-18 18:47:24,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 20 states have call successors, (39), 12 states have call predecessors, (39), 18 states have return successors, (37), 20 states have call predecessors, (37), 19 states have call successors, (37) [2022-11-18 18:47:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 714 transitions. [2022-11-18 18:47:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-18 18:47:24,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:24,190 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:24,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 18:47:24,403 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash -320677644, now seen corresponding path program 3 times [2022-11-18 18:47:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820552773] [2022-11-18 18:47:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:24,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:47:24,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887787018] [2022-11-18 18:47:24,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:47:24,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:24,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:24,495 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:24,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 18:47:39,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 18:47:39,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:47:39,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-18 18:47:39,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:40,938 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5484 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5488 Int) (v_ArrVal_5486 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5484) |c_#memory_int|) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5488))) (= |c_#memory_$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_5486))))) is different from true [2022-11-18 18:48:01,914 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:48:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 378 proven. 8 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-18 18:48:01,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:02,976 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5507 Int) (v_ArrVal_5506 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| Int) (v_ArrVal_5508 (Array Int Int))) (let ((.cse0 (+ |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519|) 0 v_ArrVal_5506)) |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519|) 0 v_ArrVal_5507)) |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| v_ArrVal_5508) |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.base|) (+ |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.offset| 8)) 18446744073709551616) 0))))) is different from false [2022-11-18 18:48:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:02,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820552773] [2022-11-18 18:48:02,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:02,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887787018] [2022-11-18 18:48:02,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887787018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:02,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:48:02,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 18:48:02,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223960247] [2022-11-18 18:48:02,979 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:02,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:48:02,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:48:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=722, Unknown=19, NotChecked=110, Total=930 [2022-11-18 18:48:02,981 INFO L87 Difference]: Start difference. First operand 505 states and 714 transitions. Second operand has 27 states, 23 states have (on average 5.217391304347826) internal successors, (120), 22 states have internal predecessors, (120), 10 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (36), 8 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 18:48:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:10,378 INFO L93 Difference]: Finished difference Result 968 states and 1564 transitions. [2022-11-18 18:48:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:48:10,379 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.217391304347826) internal successors, (120), 22 states have internal predecessors, (120), 10 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (36), 8 states have call predecessors, (36), 10 states have call successors, (36) Word has length 278 [2022-11-18 18:48:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:10,384 INFO L225 Difference]: With dead ends: 968 [2022-11-18 18:48:10,384 INFO L226 Difference]: Without dead ends: 681 [2022-11-18 18:48:10,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=195, Invalid=1948, Unknown=27, NotChecked=182, Total=2352 [2022-11-18 18:48:10,387 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 266 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 4534 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 8735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 4534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3977 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:10,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 4225 Invalid, 8735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [224 Valid, 4534 Invalid, 0 Unknown, 3977 Unchecked, 5.9s Time] [2022-11-18 18:48:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-18 18:48:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 519. [2022-11-18 18:48:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 321 states have (on average 1.115264797507788) internal successors, (358), 331 states have internal predecessors, (358), 135 states have call successors, (135), 54 states have call predecessors, (135), 62 states have return successors, (237), 133 states have call predecessors, (237), 134 states have call successors, (237) [2022-11-18 18:48:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 730 transitions. [2022-11-18 18:48:10,474 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 730 transitions. Word has length 278 [2022-11-18 18:48:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:10,475 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 730 transitions. [2022-11-18 18:48:10,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.217391304347826) internal successors, (120), 22 states have internal predecessors, (120), 10 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (36), 8 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 18:48:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 730 transitions. [2022-11-18 18:48:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-18 18:48:10,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:10,480 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:10,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-18 18:48:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 18:48:10,701 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:10,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1033750964, now seen corresponding path program 1 times [2022-11-18 18:48:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:10,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548143566] [2022-11-18 18:48:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:10,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309682317] [2022-11-18 18:48:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:10,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:10,793 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 18:48:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:12,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 3419 conjuncts, 242 conjunts are in the unsatisfiable core [2022-11-18 18:48:12,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:12,185 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 [2022-11-18 18:48:12,194 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 [2022-11-18 18:48:12,321 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 [2022-11-18 18:48:12,329 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 [2022-11-18 18:48:12,571 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5755 Int) (v_ArrVal_5756 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5755))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5756)))) is different from true [2022-11-18 18:48:12,702 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5755 Int) (v_ArrVal_5756 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5755))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5756)))) is different from true [2022-11-18 18:48:12,752 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:48:12,753 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 [2022-11-18 18:48:12,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:12,761 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 [2022-11-18 18:48:12,771 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 [2022-11-18 18:48:21,285 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:48:21,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:48:21,295 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 [2022-11-18 18:48:21,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:21,389 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 [2022-11-18 18:48:21,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:21,545 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 [2022-11-18 18:48:21,811 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 [2022-11-18 18:48:21,814 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5766 Int)) (= |c_#memory_$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_5766)))) is different from true [2022-11-18 18:48:28,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:28,205 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 [2022-11-18 18:48:41,254 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5767 Int) (v_ArrVal_5769 (Array Int Int))) (and (= |c_#memory_$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_5767))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5769) |c_#memory_int|))) is different from true [2022-11-18 18:49:02,232 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-18 18:49:02,232 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 19 treesize of output 19 [2022-11-18 18:49:02,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:49:02,239 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 [2022-11-18 18:49:02,246 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 6 [2022-11-18 18:49:03,457 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5772 Int) (v_ArrVal_5770 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5770)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5772)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 18:49:20,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:49:20,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:49:20,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:49:20,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:49:20,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2022-11-18 18:49:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 405 proven. 87 refuted. 10 times theorem prover too weak. 84 trivial. 29 not checked. [2022-11-18 18:49:20,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548143566] [2022-11-18 18:49:25,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309682317] [2022-11-18 18:49:25,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309682317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:25,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:49:25,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2022-11-18 18:49:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835111479] [2022-11-18 18:49:25,354 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:25,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-18 18:49:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-18 18:49:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2456, Unknown=118, NotChecked=530, Total=3306 [2022-11-18 18:49:25,357 INFO L87 Difference]: Start difference. First operand 519 states and 730 transitions. Second operand has 57 states, 50 states have (on average 2.96) internal successors, (148), 49 states have internal predecessors, (148), 21 states have call successors, (41), 13 states have call predecessors, (41), 17 states have return successors, (39), 18 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-18 18:49:26,426 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5767 Int) (v_ArrVal_5769 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5767))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5769) |c_#memory_int|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5772 Int) (v_ArrVal_5770 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5770)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5772)) |c_#memory_$Pointer$.base|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5755 Int) (v_ArrVal_5756 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5755))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5756)))) (exists ((v_ArrVal_5766 Int)) (= |c_#memory_$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_5766))))) is different from true [2022-11-18 18:49:47,354 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5755 Int) (v_ArrVal_5756 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5755))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5756)))) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_5766 Int)) (and (= |c_#memory_$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_5766))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) is different from true [2022-11-18 18:50:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:37,004 INFO L93 Difference]: Finished difference Result 918 states and 1329 transitions. [2022-11-18 18:50:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 18:50:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 2.96) internal successors, (148), 49 states have internal predecessors, (148), 21 states have call successors, (41), 13 states have call predecessors, (41), 17 states have return successors, (39), 18 states have call predecessors, (39), 21 states have call successors, (39) Word has length 278 [2022-11-18 18:50:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:37,009 INFO L225 Difference]: With dead ends: 918 [2022-11-18 18:50:37,009 INFO L226 Difference]: Without dead ends: 631 [2022-11-18 18:50:37,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 296 SyntacticMatches, 15 SemanticMatches, 89 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 138.8s TimeCoverageRelationStatistics Valid=585, Invalid=6196, Unknown=219, NotChecked=1190, Total=8190 [2022-11-18 18:50:37,013 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 575 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7122 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:37,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 4171 Invalid, 12062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 4253 Invalid, 0 Unknown, 7122 Unchecked, 3.8s Time] [2022-11-18 18:50:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-18 18:50:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 589. [2022-11-18 18:50:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 366 states have (on average 1.1010928961748634) internal successors, (403), 376 states have internal predecessors, (403), 150 states have call successors, (150), 65 states have call predecessors, (150), 72 states have return successors, (255), 147 states have call predecessors, (255), 149 states have call successors, (255) [2022-11-18 18:50:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 808 transitions. [2022-11-18 18:50:37,088 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 808 transitions. Word has length 278 [2022-11-18 18:50:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:37,088 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 808 transitions. [2022-11-18 18:50:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 2.96) internal successors, (148), 49 states have internal predecessors, (148), 21 states have call successors, (41), 13 states have call predecessors, (41), 17 states have return successors, (39), 18 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-18 18:50:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 808 transitions. [2022-11-18 18:50:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-18 18:50:37,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:37,093 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:37,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:37,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 18:50:37,307 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -829524227, now seen corresponding path program 1 times [2022-11-18 18:50:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:37,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252293444] [2022-11-18 18:50:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:37,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:37,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321803913] [2022-11-18 18:50:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:37,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:37,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:37,384 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:37,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 18:50:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:38,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 3427 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:50:38,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:38,936 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 17 treesize of output 9 [2022-11-18 18:50:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-18 18:50:38,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:38,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:38,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252293444] [2022-11-18 18:50:38,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:38,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321803913] [2022-11-18 18:50:38,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321803913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:38,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:38,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:50:38,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312194933] [2022-11-18 18:50:38,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:38,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:50:38,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:50:38,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:50:38,963 INFO L87 Difference]: Start difference. First operand 589 states and 808 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-18 18:50:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:39,978 INFO L93 Difference]: Finished difference Result 961 states and 1380 transitions. [2022-11-18 18:50:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:50:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 281 [2022-11-18 18:50:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:39,983 INFO L225 Difference]: With dead ends: 961 [2022-11-18 18:50:39,983 INFO L226 Difference]: Without dead ends: 622 [2022-11-18 18:50:39,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:50:39,985 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 77 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:39,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 2755 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 668 Invalid, 0 Unknown, 124 Unchecked, 0.8s Time] [2022-11-18 18:50:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-11-18 18:50:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 589. [2022-11-18 18:50:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 366 states have (on average 1.098360655737705) internal successors, (402), 376 states have internal predecessors, (402), 150 states have call successors, (150), 65 states have call predecessors, (150), 72 states have return successors, (255), 147 states have call predecessors, (255), 149 states have call successors, (255) [2022-11-18 18:50:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 807 transitions. [2022-11-18 18:50:40,072 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 807 transitions. Word has length 281 [2022-11-18 18:50:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:40,073 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 807 transitions. [2022-11-18 18:50:40,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-18 18:50:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 807 transitions. [2022-11-18 18:50:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-18 18:50:40,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:40,079 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:40,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:40,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:40,294 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1954669768, now seen corresponding path program 3 times [2022-11-18 18:50:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:40,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732329409] [2022-11-18 18:50:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:40,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083456736] [2022-11-18 18:50:40,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:50:40,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:40,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:40,376 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:40,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 18:50:41,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:50:41,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:41,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-18 18:50:41,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:42,174 INFO L321 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-11-18 18:50:42,174 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 4 case distinctions, treesize of input 33 treesize of output 59 [2022-11-18 18:52:11,603 WARN L233 SmtUtils]: Spent 46.93s on a formula simplification. DAG size of input: 398 DAG size of output: 143 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 18:52:11,605 INFO L321 Elim1Store]: treesize reduction 1207, result has 22.4 percent of original size [2022-11-18 18:52:11,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 81 case distinctions, treesize of input 410 treesize of output 669 [2022-11-18 18:52:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 176 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-18 18:52:12,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:52:25,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:25,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732329409] [2022-11-18 18:52:25,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:52:25,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083456736] [2022-11-18 18:52:25,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083456736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:52:25,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:52:25,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-18 18:52:25,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893536307] [2022-11-18 18:52:25,328 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:52:25,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:52:25,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:25,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:52:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=784, Unknown=3, NotChecked=0, Total=870 [2022-11-18 18:52:25,333 INFO L87 Difference]: Start difference. First operand 589 states and 807 transitions. Second operand has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 20 states have internal predecessors, (96), 8 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 8 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-18 18:52:45,478 WARN L233 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 86 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:52:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:52:47,975 INFO L93 Difference]: Finished difference Result 648 states and 891 transitions. [2022-11-18 18:52:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:52:47,976 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 20 states have internal predecessors, (96), 8 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 8 states have call predecessors, (33), 7 states have call successors, (33) Word has length 274 [2022-11-18 18:52:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:52:47,980 INFO L225 Difference]: With dead ends: 648 [2022-11-18 18:52:47,980 INFO L226 Difference]: Without dead ends: 644 [2022-11-18 18:52:47,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=124, Invalid=1203, Unknown=5, NotChecked=0, Total=1332 [2022-11-18 18:52:47,982 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 136 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1706 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:52:47,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 3145 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2590 Invalid, 0 Unknown, 1706 Unchecked, 2.8s Time] [2022-11-18 18:52:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-11-18 18:52:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 622. [2022-11-18 18:52:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 388 states have (on average 1.1030927835051547) internal successors, (428), 398 states have internal predecessors, (428), 157 states have call successors, (157), 69 states have call predecessors, (157), 76 states have return successors, (269), 154 states have call predecessors, (269), 156 states have call successors, (269) [2022-11-18 18:52:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 854 transitions. [2022-11-18 18:52:48,065 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 854 transitions. Word has length 274 [2022-11-18 18:52:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:52:48,066 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 854 transitions. [2022-11-18 18:52:48,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 20 states have internal predecessors, (96), 8 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 8 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-18 18:52:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 854 transitions. [2022-11-18 18:52:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-18 18:52:48,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:52:48,070 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:52:48,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:52:48,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:52:48,283 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:52:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1704554798, now seen corresponding path program 4 times [2022-11-18 18:52:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:48,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115119822] [2022-11-18 18:52:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:48,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:52:48,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002965163] [2022-11-18 18:52:48,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:52:48,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:52:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:52:48,367 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:52:48,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 18:52:49,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:52:49,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:52:49,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3424 conjuncts, 149 conjunts are in the unsatisfiable core [2022-11-18 18:52:49,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:52:51,137 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6526 Int) (v_ArrVal_6524 Int) (v_ArrVal_6527 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6526))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6527) |c_#memory_int|) (= |c_#memory_$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_6524))))) is different from true [2022-11-18 18:53:02,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:53:02,220 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:53:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 311 proven. 5 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-18 18:53:02,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:03,123 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_553| Int) (v_ArrVal_6548 Int) (v_ArrVal_6546 (Array Int Int)) (v_ArrVal_6547 Int)) (let ((.cse0 (+ 32 |c_aws_array_list_set_at_aws_array_list_calc_necessary_size_~list#1.offset|))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_553| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_553|) 0 v_ArrVal_6547)) |c_aws_array_list_set_at_aws_array_list_calc_necessary_size_~list#1.base|) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_553| v_ArrVal_6546) |c_aws_array_list_set_at_aws_array_list_calc_necessary_size_~list#1.base|) (+ |c_aws_array_list_set_at_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_553| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_553|) 0 v_ArrVal_6548)) |c_aws_array_list_set_at_aws_array_list_calc_necessary_size_~list#1.base|) .cse0) 0))))) is different from false [2022-11-18 18:53:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115119822] [2022-11-18 18:53:03,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:53:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002965163] [2022-11-18 18:53:03,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002965163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:53:03,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:53:03,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-18 18:53:03,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195506823] [2022-11-18 18:53:03,126 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:03,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 18:53:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 18:53:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1374, Unknown=14, NotChecked=150, Total=1640 [2022-11-18 18:53:03,129 INFO L87 Difference]: Start difference. First operand 622 states and 854 transitions. Second operand has 37 states, 32 states have (on average 3.78125) internal successors, (121), 28 states have internal predecessors, (121), 12 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (36), 13 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-18 18:53:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:11,905 INFO L93 Difference]: Finished difference Result 1085 states and 1694 transitions. [2022-11-18 18:53:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 18:53:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 3.78125) internal successors, (121), 28 states have internal predecessors, (121), 12 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (36), 13 states have call predecessors, (36), 12 states have call successors, (36) Word has length 280 [2022-11-18 18:53:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:11,913 INFO L225 Difference]: With dead ends: 1085 [2022-11-18 18:53:11,913 INFO L226 Difference]: Without dead ends: 792 [2022-11-18 18:53:11,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=241, Invalid=3407, Unknown=20, NotChecked=238, Total=3906 [2022-11-18 18:53:11,918 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 355 mSDsluCounter, 5916 mSDsCounter, 0 mSdLazyCounter, 7397 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 6293 SdHoareTripleChecker+Invalid, 11123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 7397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3445 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:11,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 6293 Invalid, 11123 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [281 Valid, 7397 Invalid, 0 Unknown, 3445 Unchecked, 7.3s Time] [2022-11-18 18:53:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-11-18 18:53:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 629. [2022-11-18 18:53:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 392 states have (on average 1.1020408163265305) internal successors, (432), 402 states have internal predecessors, (432), 159 states have call successors, (159), 70 states have call predecessors, (159), 77 states have return successors, (272), 156 states have call predecessors, (272), 158 states have call successors, (272) [2022-11-18 18:53:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 863 transitions. [2022-11-18 18:53:12,021 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 863 transitions. Word has length 280 [2022-11-18 18:53:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:12,021 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 863 transitions. [2022-11-18 18:53:12,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 3.78125) internal successors, (121), 28 states have internal predecessors, (121), 12 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (36), 13 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-18 18:53:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 863 transitions. [2022-11-18 18:53:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-18 18:53:12,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:12,027 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:12,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-18 18:53:12,243 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1962901063, now seen corresponding path program 2 times [2022-11-18 18:53:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:12,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338284350] [2022-11-18 18:53:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:12,346 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:53:12,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229729584] [2022-11-18 18:53:12,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:53:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:53:12,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:53:12,371 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:53:12,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 18:53:13,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:53:13,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:53:13,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 3379 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 18:53:13,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:14,159 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6753 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_6753)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6751 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_6751)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 18:53:14,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:53:14,172 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 [2022-11-18 18:53:14,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:53:14,180 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 [2022-11-18 18:53:14,609 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 [2022-11-18 18:53:14,611 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 [2022-11-18 18:53:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 291 proven. 4 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-18 18:53:14,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:15,090 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 10 treesize of output 4 [2022-11-18 18:53:15,094 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 10 treesize of output 4 [2022-11-18 18:53:15,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:15,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338284350] [2022-11-18 18:53:15,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:53:15,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229729584] [2022-11-18 18:53:15,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229729584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:53:15,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:53:15,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-18 18:53:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510947056] [2022-11-18 18:53:15,256 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:15,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:53:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:53:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2022-11-18 18:53:15,257 INFO L87 Difference]: Start difference. First operand 629 states and 863 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-18 18:53:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:16,421 INFO L93 Difference]: Finished difference Result 1108 states and 1562 transitions. [2022-11-18 18:53:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:53:16,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) Word has length 276 [2022-11-18 18:53:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:16,424 INFO L225 Difference]: With dead ends: 1108 [2022-11-18 18:53:16,424 INFO L226 Difference]: Without dead ends: 695 [2022-11-18 18:53:16,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 490 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=96, Unknown=1, NotChecked=20, Total=156 [2022-11-18 18:53:16,426 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 122 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 738 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:16,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1192 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 778 Invalid, 0 Unknown, 738 Unchecked, 1.0s Time] [2022-11-18 18:53:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-11-18 18:53:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 629. [2022-11-18 18:53:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 392 states have (on average 1.1020408163265305) internal successors, (432), 402 states have internal predecessors, (432), 159 states have call successors, (159), 70 states have call predecessors, (159), 77 states have return successors, (271), 156 states have call predecessors, (271), 158 states have call successors, (271) [2022-11-18 18:53:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 862 transitions. [2022-11-18 18:53:16,515 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 862 transitions. Word has length 276 [2022-11-18 18:53:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:16,515 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 862 transitions. [2022-11-18 18:53:16,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-18 18:53:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 862 transitions. [2022-11-18 18:53:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-18 18:53:16,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:16,520 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:16,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-11-18 18:53:16,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:53:16,735 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2110944829, now seen corresponding path program 1 times [2022-11-18 18:53:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:16,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305756153] [2022-11-18 18:53:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:16,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:16,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:53:16,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316365745] [2022-11-18 18:53:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:16,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:53:16,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:53:16,823 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:53:16,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71aeb0e4-7e2f-4337-b995-fc1ba6a6020c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 18:53:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:17,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 3427 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-18 18:53:17,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:18,077 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:53:18,078 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 28 treesize of output 34 [2022-11-18 18:53:18,094 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:53:18,094 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 26 treesize of output 32 [2022-11-18 18:53:18,104 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 [2022-11-18 18:53:18,161 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:53:18,162 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 31 treesize of output 37 [2022-11-18 18:53:18,179 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:53:18,180 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 29 treesize of output 35 [2022-11-18 18:53:18,204 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 [2022-11-18 18:53:18,309 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6999 Int) (v_ArrVal_6997 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6999)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6997)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 18:53:18,515 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6999 Int) (v_ArrVal_6997 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6999)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6997)) |c_#memory_$Pointer$.offset|))) (let ((.cse0 (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and (not .cse0) (not |c_aws_array_list_is_valid_#t~short132|)) (and .cse0 |c_aws_array_list_is_valid_#t~short132|)))) is different from true [2022-11-18 18:53:18,527 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6999 Int) (v_ArrVal_6997 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6999)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6997)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-18 18:53:18,567 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 11 treesize of output 7 [2022-11-18 18:53:18,570 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 11 treesize of output 7 [2022-11-18 18:53:18,999 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7004 Int) (v_ArrVal_7002 Int) (v_ArrVal_7001 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7002)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7004)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7001)) |c_#memory_$Pointer$.offset|))) is different from true