./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/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 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:39:38,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:39:38,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:39:38,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:39:38,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:39:38,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:39:38,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:39:38,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:39:38,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:39:38,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:39:38,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:39:38,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:39:38,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:39:38,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:39:38,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:39:38,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:39:38,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:39:38,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:39:38,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:39:38,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:39:38,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:39:38,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:39:38,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:39:38,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:39:38,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:39:38,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:39:38,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:39:38,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:39:38,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:39:38,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:39:38,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:39:38,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:39:38,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:39:38,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:39:38,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:39:38,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:39:38,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:39:38,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:39:38,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:39:38,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:39:38,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:39:38,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:39:38,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:39:38,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:39:38,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:39:38,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:39:38,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:39:38,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:39:38,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:39:38,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:39:38,530 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:39:38,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:39:38,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:39:38,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:39:38,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:39:38,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:39:38,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:39:38,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:39:38,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:39:38,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:39:38,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:39:38,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:39:38,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:39:38,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:38,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:39:38,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:39:38,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:39:38,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:39:38,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:39:38,539 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:39:38,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:39:38,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:39:38,540 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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2022-11-18 19:39:38,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:39:38,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:39:38,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:39:38,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:39:38,869 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:39:38,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-11-18 19:39:38,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/data/928fd3bdd/8e8ace478eb84150bf8b3c1f081f020d/FLAG149d3a341 [2022-11-18 19:39:39,722 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:39:39,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-11-18 19:39:39,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/data/928fd3bdd/8e8ace478eb84150bf8b3c1f081f020d/FLAG149d3a341 [2022-11-18 19:39:39,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/data/928fd3bdd/8e8ace478eb84150bf8b3c1f081f020d [2022-11-18 19:39:39,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:39:39,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:39:39,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:39,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:39:39,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:39:39,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:39" (1/1) ... [2022-11-18 19:39:39,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e979840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:39, skipping insertion in model container [2022-11-18 19:39:39,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:39" (1/1) ... [2022-11-18 19:39:39,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:39:39,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:39:40,226 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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2022-11-18 19:39:40,234 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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2022-11-18 19:39:41,104 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:39:41,214 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,217 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,218 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,221 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,222 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,233 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,234 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,235 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,236 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,243 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,244 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,244 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,245 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:39:41,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:39:41,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:39:41,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:39:41,615 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:39:41,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:39:41,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:39:41,619 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:39:41,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:39:41,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:39:41,776 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,776 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,780 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,787 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:41,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:41,917 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:39:41,947 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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2022-11-18 19:39:41,948 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_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2022-11-18 19:39:42,016 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:39:42,049 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,049 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,050 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,050 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,051 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,070 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,070 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,072 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,073 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,076 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,077 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,077 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,078 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:39:42,153 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:39:42,154 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:39:42,155 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:39:42,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:39:42,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:39:42,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:39:42,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:39:42,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:39:42,164 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:39:42,220 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,226 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,228 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,232 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:39:42,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:42,575 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:39:42,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42 WrapperNode [2022-11-18 19:39:42,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:42,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:42,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:39:42,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:39:42,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,762 INFO L138 Inliner]: procedures = 691, calls = 1672, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 694 [2022-11-18 19:39:42,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:42,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:39:42,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:39:42,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:39:42,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:39:42,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:39:42,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:39:42,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:39:42,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (1/1) ... [2022-11-18 19:39:42,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:42,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:42,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:39:42,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:39:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:39:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-18 19:39:42,983 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-18 19:39:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-18 19:39:42,983 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-18 19:39:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 19:39:42,984 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 19:39:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-18 19:39:42,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-18 19:39:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:39:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 19:39:42,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 19:39:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:39:42,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:39:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:39:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:39:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:39:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-18 19:39:42,986 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-18 19:39:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:39:42,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:39:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 19:39:42,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 19:39:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-18 19:39:42,987 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-18 19:39:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 19:39:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 19:39:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-18 19:39:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-18 19:39:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 19:39:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 19:39:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-18 19:39:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-18 19:39:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-18 19:39:42,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-18 19:39:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:39:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:39:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:39:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 19:39:42,990 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 19:39:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-18 19:39:42,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-18 19:39:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:39:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-18 19:39:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-18 19:39:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:39:43,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:39:43,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:39:44,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:39:44,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:39:44,538 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:39:44,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:44 BoogieIcfgContainer [2022-11-18 19:39:44,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:39:44,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:39:44,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:39:44,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:39:44,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:39:39" (1/3) ... [2022-11-18 19:39:44,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5e8087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:44, skipping insertion in model container [2022-11-18 19:39:44,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:42" (2/3) ... [2022-11-18 19:39:44,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5e8087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:44, skipping insertion in model container [2022-11-18 19:39:44,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:44" (3/3) ... [2022-11-18 19:39:44,558 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2022-11-18 19:39:44,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:39:44,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:39:44,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:39:44,675 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;@186eba5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:39:44,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:39:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-18 19:39:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:39:44,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:44,711 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:44,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-11-18 19:39:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:44,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861540530] [2022-11-18 19:39:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:44,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:45,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:45,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861540530] [2022-11-18 19:39:45,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:39:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866949285] [2022-11-18 19:39:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:45,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:45,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:39:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:46,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:39:46,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-18 19:39:46,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:46,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866949285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:46,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:46,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:39:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726970362] [2022-11-18 19:39:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:46,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:39:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:39:46,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:39:46,292 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 19:39:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:46,887 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-11-18 19:39:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:39:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2022-11-18 19:39:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:46,902 INFO L225 Difference]: With dead ends: 416 [2022-11-18 19:39:46,902 INFO L226 Difference]: Without dead ends: 206 [2022-11-18 19:39:46,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:46,911 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 277 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:46,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 778 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:39:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-18 19:39:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-11-18 19:39:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-11-18 19:39:46,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-11-18 19:39:46,988 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-11-18 19:39:46,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:46,989 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-11-18 19:39:46,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 19:39:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-11-18 19:39:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 19:39:46,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:46,994 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:47,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:47,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:47,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-11-18 19:39:47,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:47,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927899648] [2022-11-18 19:39:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:47,342 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:47,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88339331] [2022-11-18 19:39:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:47,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:47,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:47,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:47,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:39:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:47,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:39:47,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-18 19:39:47,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927899648] [2022-11-18 19:39:47,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88339331] [2022-11-18 19:39:47,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88339331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:47,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:47,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:39:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131002596] [2022-11-18 19:39:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:47,966 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-18 19:39:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:48,043 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-11-18 19:39:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2022-11-18 19:39:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:48,048 INFO L225 Difference]: With dead ends: 410 [2022-11-18 19:39:48,049 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 19:39:48,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:48,051 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:48,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 19:39:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-11-18 19:39:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-11-18 19:39:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-11-18 19:39:48,082 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-11-18 19:39:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:48,083 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-11-18 19:39:48,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-18 19:39:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-11-18 19:39:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 19:39:48,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:48,086 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:48,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:48,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-11-18 19:39:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:48,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67106679] [2022-11-18 19:39:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:48,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:48,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937254289] [2022-11-18 19:39:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:48,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:48,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:48,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:39:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:39:48,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 19:39:49,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:49,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67106679] [2022-11-18 19:39:49,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:49,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937254289] [2022-11-18 19:39:49,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937254289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:49,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:49,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:39:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304867406] [2022-11-18 19:39:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:49,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:39:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:39:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:39:49,109 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 19:39:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:49,534 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-11-18 19:39:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:39:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2022-11-18 19:39:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:49,542 INFO L225 Difference]: With dead ends: 383 [2022-11-18 19:39:49,542 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 19:39:49,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:49,550 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:49,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 769 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:39:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 19:39:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-18 19:39:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-11-18 19:39:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-11-18 19:39:49,593 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-11-18 19:39:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:49,593 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-11-18 19:39:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 19:39:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-11-18 19:39:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-18 19:39:49,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:49,597 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:49,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:49,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:49,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-11-18 19:39:49,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:49,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750975778] [2022-11-18 19:39:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:49,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:49,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:49,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127227917] [2022-11-18 19:39:49,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:39:49,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:49,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:49,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:49,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:39:50,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:39:50,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:39:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-18 19:39:50,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:50,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:50,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750975778] [2022-11-18 19:39:50,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:50,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127227917] [2022-11-18 19:39:50,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127227917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:50,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:50,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:39:50,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981187290] [2022-11-18 19:39:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:50,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:39:50,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:39:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:50,470 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 19:39:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:50,525 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-11-18 19:39:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2022-11-18 19:39:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:50,529 INFO L225 Difference]: With dead ends: 269 [2022-11-18 19:39:50,530 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 19:39:50,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:39:50,533 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:50,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1085 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 19:39:50,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-18 19:39:50,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2022-11-18 19:39:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-11-18 19:39:50,564 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-11-18 19:39:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:50,565 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-11-18 19:39:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 19:39:50,565 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-11-18 19:39:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-18 19:39:50,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:50,569 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:50,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:39:50,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:50,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-11-18 19:39:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:50,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234143012] [2022-11-18 19:39:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:50,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:50,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900970576] [2022-11-18 19:39:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:50,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:50,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:50,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:50,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:39:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:51,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:39:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-11-18 19:39:51,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:51,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234143012] [2022-11-18 19:39:51,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:51,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900970576] [2022-11-18 19:39:51,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900970576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:51,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:51,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:39:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801254924] [2022-11-18 19:39:51,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:39:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:51,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:39:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:39:51,622 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-18 19:39:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:52,156 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-11-18 19:39:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:39:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2022-11-18 19:39:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:52,159 INFO L225 Difference]: With dead ends: 382 [2022-11-18 19:39:52,159 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 19:39:52,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:39:52,161 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:52,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 914 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:39:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 19:39:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-18 19:39:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2022-11-18 19:39:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-11-18 19:39:52,178 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-11-18 19:39:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:52,179 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-11-18 19:39:52,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-18 19:39:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-11-18 19:39:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-18 19:39:52,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:52,183 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:52,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:52,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:52,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-11-18 19:39:52,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:52,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888643636] [2022-11-18 19:39:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:52,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:52,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:52,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426744776] [2022-11-18 19:39:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:52,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:52,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:52,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:52,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:39:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:53,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:39:53,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-18 19:39:53,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:53,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888643636] [2022-11-18 19:39:53,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:53,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426744776] [2022-11-18 19:39:53,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426744776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:53,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:53,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:39:53,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450887199] [2022-11-18 19:39:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:53,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:39:53,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:39:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:39:53,284 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-18 19:39:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:53,735 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-11-18 19:39:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:39:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2022-11-18 19:39:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:53,738 INFO L225 Difference]: With dead ends: 379 [2022-11-18 19:39:53,738 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 19:39:53,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:39:53,741 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:53,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:39:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 19:39:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-18 19:39:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-11-18 19:39:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-11-18 19:39:53,767 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-11-18 19:39:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:53,769 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-11-18 19:39:53,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-18 19:39:53,769 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-11-18 19:39:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-18 19:39:53,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:53,773 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:53,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:53,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:53,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-11-18 19:39:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:53,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988761772] [2022-11-18 19:39:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:54,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:54,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238911244] [2022-11-18 19:39:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:54,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:54,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:54,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:39:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:54,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:39:54,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-18 19:39:54,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:54,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988761772] [2022-11-18 19:39:54,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:54,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238911244] [2022-11-18 19:39:54,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238911244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:54,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:54,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:39:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914015011] [2022-11-18 19:39:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:39:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:39:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:39:54,839 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-18 19:39:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:54,890 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-11-18 19:39:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:39:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2022-11-18 19:39:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:54,893 INFO L225 Difference]: With dead ends: 269 [2022-11-18 19:39:54,893 INFO L226 Difference]: Without dead ends: 220 [2022-11-18 19:39:54,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:39:54,894 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 4 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:54,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1363 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-18 19:39:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-11-18 19:39:54,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-11-18 19:39:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-11-18 19:39:54,910 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-11-18 19:39:54,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:54,911 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-11-18 19:39:54,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-18 19:39:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-11-18 19:39:54,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-18 19:39:54,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:54,916 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:54,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 19:39:55,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:39:55,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-11-18 19:39:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:55,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051573138] [2022-11-18 19:39:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:55,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:55,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286049581] [2022-11-18 19:39:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:55,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:55,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:55,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:55,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:39:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:56,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-18 19:39:56,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:56,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:39:57,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:57,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:39:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:57,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:39:57,405 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_977 Int) (v_ArrVal_976 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_977)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_976))))) is different from true [2022-11-18 19:39:58,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:58,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:39:58,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:58,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:39:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 372 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 19:39:59,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051573138] [2022-11-18 19:40:10,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286049581] [2022-11-18 19:40:10,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286049581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:10,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:10,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-18 19:40:10,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294707086] [2022-11-18 19:40:10,699 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:10,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:40:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:40:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1621, Unknown=22, NotChecked=82, Total=1892 [2022-11-18 19:40:10,701 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 32 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 30 states have internal predecessors, (100), 12 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (31), 10 states have call predecessors, (31), 12 states have call successors, (31) [2022-11-18 19:40:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:15,992 INFO L93 Difference]: Finished difference Result 435 states and 583 transitions. [2022-11-18 19:40:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:40:15,992 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 30 states have internal predecessors, (100), 12 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (31), 10 states have call predecessors, (31), 12 states have call successors, (31) Word has length 226 [2022-11-18 19:40:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:15,995 INFO L225 Difference]: With dead ends: 435 [2022-11-18 19:40:15,995 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 19:40:15,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 301 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=314, Invalid=2860, Unknown=22, NotChecked=110, Total=3306 [2022-11-18 19:40:15,997 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 98 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1676 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:15,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1884 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2114 Invalid, 0 Unknown, 1676 Unchecked, 2.2s Time] [2022-11-18 19:40:15,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 19:40:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 235. [2022-11-18 19:40:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 135 states have (on average 1.1407407407407408) internal successors, (154), 138 states have internal predecessors, (154), 76 states have call successors, (76), 20 states have call predecessors, (76), 23 states have return successors, (94), 76 states have call predecessors, (94), 75 states have call successors, (94) [2022-11-18 19:40:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 324 transitions. [2022-11-18 19:40:16,023 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 324 transitions. Word has length 226 [2022-11-18 19:40:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:16,023 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 324 transitions. [2022-11-18 19:40:16,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 30 states have internal predecessors, (100), 12 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (31), 10 states have call predecessors, (31), 12 states have call successors, (31) [2022-11-18 19:40:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 324 transitions. [2022-11-18 19:40:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-18 19:40:16,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:16,028 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:16,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:16,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:16,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:16,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 1 times [2022-11-18 19:40:16,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:16,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156421474] [2022-11-18 19:40:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:16,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:16,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:16,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076185480] [2022-11-18 19:40:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:16,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:16,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:16,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:16,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:40:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:40:17,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:17,172 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 19:40:17,271 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 19:40:17,431 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1197 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1197)))) is different from true [2022-11-18 19:40:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-18 19:40:25,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:25,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:25,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156421474] [2022-11-18 19:40:25,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076185480] [2022-11-18 19:40:25,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076185480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:25,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:25,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 19:40:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470630507] [2022-11-18 19:40:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:25,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:40:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:40:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-11-18 19:40:25,723 INFO L87 Difference]: Start difference. First operand 235 states and 324 transitions. Second operand has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-18 19:40:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:26,933 INFO L93 Difference]: Finished difference Result 429 states and 588 transitions. [2022-11-18 19:40:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:40:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 232 [2022-11-18 19:40:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:26,936 INFO L225 Difference]: With dead ends: 429 [2022-11-18 19:40:26,936 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 19:40:26,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2022-11-18 19:40:26,938 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 104 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1065 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:26,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1224 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1206 Invalid, 0 Unknown, 1065 Unchecked, 1.1s Time] [2022-11-18 19:40:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 19:40:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2022-11-18 19:40:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 137 states have (on average 1.1386861313868613) internal successors, (156), 140 states have internal predecessors, (156), 76 states have call successors, (76), 21 states have call predecessors, (76), 24 states have return successors, (94), 76 states have call predecessors, (94), 75 states have call successors, (94) [2022-11-18 19:40:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 326 transitions. [2022-11-18 19:40:26,958 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 326 transitions. Word has length 232 [2022-11-18 19:40:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:26,958 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 326 transitions. [2022-11-18 19:40:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-18 19:40:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 326 transitions. [2022-11-18 19:40:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-18 19:40:26,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:26,963 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:26,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:27,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1304057108, now seen corresponding path program 1 times [2022-11-18 19:40:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:27,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729929342] [2022-11-18 19:40:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:27,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:27,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106851633] [2022-11-18 19:40:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:27,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:27,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:27,256 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:27,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:40:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:27,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:40:27,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-11-18 19:40:28,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:28,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729929342] [2022-11-18 19:40:28,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:28,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106851633] [2022-11-18 19:40:28,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106851633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:28,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:28,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969376687] [2022-11-18 19:40:28,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:28,042 INFO L87 Difference]: Start difference. First operand 238 states and 326 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-18 19:40:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:28,329 INFO L93 Difference]: Finished difference Result 461 states and 658 transitions. [2022-11-18 19:40:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:40:28,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 228 [2022-11-18 19:40:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:28,332 INFO L225 Difference]: With dead ends: 461 [2022-11-18 19:40:28,333 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 19:40:28,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:28,334 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 10 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:28,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1051 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:40:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 19:40:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2022-11-18 19:40:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 141 states have internal predecessors, (157), 76 states have call successors, (76), 21 states have call predecessors, (76), 24 states have return successors, (94), 76 states have call predecessors, (94), 75 states have call successors, (94) [2022-11-18 19:40:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 327 transitions. [2022-11-18 19:40:28,356 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 327 transitions. Word has length 228 [2022-11-18 19:40:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:28,356 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 327 transitions. [2022-11-18 19:40:28,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-18 19:40:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 327 transitions. [2022-11-18 19:40:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-18 19:40:28,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:28,359 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:28,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:28,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1642776618, now seen corresponding path program 1 times [2022-11-18 19:40:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:28,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439161944] [2022-11-18 19:40:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:28,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:28,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154519452] [2022-11-18 19:40:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:28,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:28,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:28,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:28,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:40:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:29,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 19:40:29,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:29,451 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:40:29,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:40:29,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:40:29,984 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1563 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1563) |c_#memory_int|)) is different from true [2022-11-18 19:40:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-18 19:40:30,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:30,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:30,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439161944] [2022-11-18 19:40:30,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:30,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154519452] [2022-11-18 19:40:30,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154519452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:30,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:30,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-18 19:40:30,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549138668] [2022-11-18 19:40:30,617 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:30,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:40:30,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:40:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=4, NotChecked=34, Total=380 [2022-11-18 19:40:30,618 INFO L87 Difference]: Start difference. First operand 239 states and 327 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-18 19:40:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:31,964 INFO L93 Difference]: Finished difference Result 521 states and 728 transitions. [2022-11-18 19:40:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:40:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 228 [2022-11-18 19:40:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:31,967 INFO L225 Difference]: With dead ends: 521 [2022-11-18 19:40:31,967 INFO L226 Difference]: Without dead ends: 302 [2022-11-18 19:40:31,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 385 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=4, NotChecked=44, Total=600 [2022-11-18 19:40:31,969 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 163 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1221 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:31,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1077 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 955 Invalid, 0 Unknown, 1221 Unchecked, 1.1s Time] [2022-11-18 19:40:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-18 19:40:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 278. [2022-11-18 19:40:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 165 states have (on average 1.1333333333333333) internal successors, (187), 169 states have internal predecessors, (187), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (118), 82 states have call predecessors, (118), 80 states have call successors, (118) [2022-11-18 19:40:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 386 transitions. [2022-11-18 19:40:31,996 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 386 transitions. Word has length 228 [2022-11-18 19:40:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:31,996 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 386 transitions. [2022-11-18 19:40:31,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-18 19:40:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 386 transitions. [2022-11-18 19:40:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-18 19:40:31,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:31,999 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:32,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:32,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:32,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:32,211 INFO L85 PathProgramCache]: Analyzing trace with hash 739509884, now seen corresponding path program 1 times [2022-11-18 19:40:32,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:32,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902499861] [2022-11-18 19:40:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:32,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:32,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673387694] [2022-11-18 19:40:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:32,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:32,290 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:32,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:40:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:33,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:40:33,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 318 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-18 19:40:33,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-18 19:40:33,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:33,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902499861] [2022-11-18 19:40:33,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:33,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673387694] [2022-11-18 19:40:33,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673387694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:33,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:33,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-11-18 19:40:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711724251] [2022-11-18 19:40:33,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:33,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:40:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:40:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:40:33,992 INFO L87 Difference]: Start difference. First operand 278 states and 386 transitions. Second operand has 21 states, 18 states have (on average 5.777777777777778) internal successors, (104), 14 states have internal predecessors, (104), 5 states have call successors, (41), 3 states have call predecessors, (41), 7 states have return successors, (43), 8 states have call predecessors, (43), 4 states have call successors, (43) [2022-11-18 19:40:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:34,615 INFO L93 Difference]: Finished difference Result 489 states and 710 transitions. [2022-11-18 19:40:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:40:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.777777777777778) internal successors, (104), 14 states have internal predecessors, (104), 5 states have call successors, (41), 3 states have call predecessors, (41), 7 states have return successors, (43), 8 states have call predecessors, (43), 4 states have call successors, (43) Word has length 249 [2022-11-18 19:40:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:34,618 INFO L225 Difference]: With dead ends: 489 [2022-11-18 19:40:34,618 INFO L226 Difference]: Without dead ends: 288 [2022-11-18 19:40:34,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:40:34,620 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 11 mSDsluCounter, 4200 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4473 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:34,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4473 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:40:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-18 19:40:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-18 19:40:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 173 states have (on average 1.138728323699422) internal successors, (197), 179 states have internal predecessors, (197), 81 states have call successors, (81), 26 states have call predecessors, (81), 33 states have return successors, (146), 82 states have call predecessors, (146), 80 states have call successors, (146) [2022-11-18 19:40:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 424 transitions. [2022-11-18 19:40:34,652 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 424 transitions. Word has length 249 [2022-11-18 19:40:34,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:34,652 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 424 transitions. [2022-11-18 19:40:34,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.777777777777778) internal successors, (104), 14 states have internal predecessors, (104), 5 states have call successors, (41), 3 states have call predecessors, (41), 7 states have return successors, (43), 8 states have call predecessors, (43), 4 states have call successors, (43) [2022-11-18 19:40:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 424 transitions. [2022-11-18 19:40:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-18 19:40:34,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:34,655 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:34,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:40:34,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash 922099270, now seen corresponding path program 2 times [2022-11-18 19:40:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:34,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188131167] [2022-11-18 19:40:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:34,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:34,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720241624] [2022-11-18 19:40:34,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:34,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:34,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:34,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:35,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:40:36,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:40:36,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:36,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:40:36,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 355 proven. 15 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 19:40:37,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:37,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:37,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188131167] [2022-11-18 19:40:37,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:37,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720241624] [2022-11-18 19:40:37,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720241624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:37,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:37,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-18 19:40:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112103157] [2022-11-18 19:40:37,752 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:40:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:40:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:40:37,755 INFO L87 Difference]: Start difference. First operand 288 states and 424 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-18 19:40:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:41,406 INFO L93 Difference]: Finished difference Result 709 states and 1238 transitions. [2022-11-18 19:40:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:40:41,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 243 [2022-11-18 19:40:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:41,411 INFO L225 Difference]: With dead ends: 709 [2022-11-18 19:40:41,411 INFO L226 Difference]: Without dead ends: 449 [2022-11-18 19:40:41,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 283 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:40:41,414 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 201 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 360 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:41,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1724 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2951 Invalid, 0 Unknown, 360 Unchecked, 3.2s Time] [2022-11-18 19:40:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-18 19:40:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 351. [2022-11-18 19:40:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 209 states have (on average 1.1339712918660287) internal successors, (237), 219 states have internal predecessors, (237), 103 states have call successors, (103), 28 states have call predecessors, (103), 38 states have return successors, (244), 103 states have call predecessors, (244), 102 states have call successors, (244) [2022-11-18 19:40:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 584 transitions. [2022-11-18 19:40:41,467 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 584 transitions. Word has length 243 [2022-11-18 19:40:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:41,468 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 584 transitions. [2022-11-18 19:40:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-18 19:40:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 584 transitions. [2022-11-18 19:40:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-18 19:40:41,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:41,471 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:41,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:41,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:40:41,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1721567536, now seen corresponding path program 3 times [2022-11-18 19:40:41,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:41,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46410997] [2022-11-18 19:40:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:41,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:41,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:41,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831950999] [2022-11-18 19:40:41,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:40:41,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:41,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:41,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:41,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:40:43,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:40:43,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:43,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:40:43,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-18 19:40:43,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:43,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46410997] [2022-11-18 19:40:43,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831950999] [2022-11-18 19:40:43,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831950999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:43,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:43,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 19:40:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125237065] [2022-11-18 19:40:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:43,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:40:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:40:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:40:43,287 INFO L87 Difference]: Start difference. First operand 351 states and 584 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 10 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-18 19:40:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:43,690 INFO L93 Difference]: Finished difference Result 593 states and 986 transitions. [2022-11-18 19:40:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:40:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 10 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 237 [2022-11-18 19:40:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:43,695 INFO L225 Difference]: With dead ends: 593 [2022-11-18 19:40:43,695 INFO L226 Difference]: Without dead ends: 351 [2022-11-18 19:40:43,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:40:43,698 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 13 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:43,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2911 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:40:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-18 19:40:43,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2022-11-18 19:40:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 209 states have (on average 1.1339712918660287) internal successors, (237), 219 states have internal predecessors, (237), 103 states have call successors, (103), 28 states have call predecessors, (103), 38 states have return successors, (240), 103 states have call predecessors, (240), 102 states have call successors, (240) [2022-11-18 19:40:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 580 transitions. [2022-11-18 19:40:43,740 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 580 transitions. Word has length 237 [2022-11-18 19:40:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:43,742 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 580 transitions. [2022-11-18 19:40:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 10 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-18 19:40:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 580 transitions. [2022-11-18 19:40:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-18 19:40:43,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:43,746 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:43,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:40:43,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1043562096, now seen corresponding path program 1 times [2022-11-18 19:40:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:43,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136995740] [2022-11-18 19:40:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:43,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:44,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:44,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776777453] [2022-11-18 19:40:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:44,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:44,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:44,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:40:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:44,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-18 19:40:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:45,156 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 19:40:45,162 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 19:40:45,365 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2278 Int) (v_ArrVal_2279 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2279))) (= |c_#memory_$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_2278))))) is different from true [2022-11-18 19:40:46,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-11-18 19:40:46,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-18 19:40:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 326 proven. 1 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-18 19:40:46,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:47,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:47,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136995740] [2022-11-18 19:40:47,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:47,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776777453] [2022-11-18 19:40:47,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776777453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:47,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:47,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-18 19:40:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737077705] [2022-11-18 19:40:47,715 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:40:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:40:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=592, Unknown=43, NotChecked=50, Total=756 [2022-11-18 19:40:47,717 INFO L87 Difference]: Start difference. First operand 351 states and 580 transitions. Second operand has 22 states, 18 states have (on average 4.944444444444445) internal successors, (89), 19 states have internal predecessors, (89), 9 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-18 19:40:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:49,472 INFO L93 Difference]: Finished difference Result 615 states and 1028 transitions. [2022-11-18 19:40:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:40:49,473 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.944444444444445) internal successors, (89), 19 states have internal predecessors, (89), 9 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) Word has length 225 [2022-11-18 19:40:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:49,492 INFO L225 Difference]: With dead ends: 615 [2022-11-18 19:40:49,492 INFO L226 Difference]: Without dead ends: 352 [2022-11-18 19:40:49,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=118, Invalid=965, Unknown=43, NotChecked=64, Total=1190 [2022-11-18 19:40:49,495 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 94 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1295 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:49,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1615 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1325 Invalid, 0 Unknown, 1295 Unchecked, 1.2s Time] [2022-11-18 19:40:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-18 19:40:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-11-18 19:40:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 209 states have (on average 1.1339712918660287) internal successors, (237), 219 states have internal predecessors, (237), 104 states have call successors, (104), 28 states have call predecessors, (104), 38 states have return successors, (241), 104 states have call predecessors, (241), 103 states have call successors, (241) [2022-11-18 19:40:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 582 transitions. [2022-11-18 19:40:49,537 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 582 transitions. Word has length 225 [2022-11-18 19:40:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:49,538 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 582 transitions. [2022-11-18 19:40:49,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.944444444444445) internal successors, (89), 19 states have internal predecessors, (89), 9 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-18 19:40:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 582 transitions. [2022-11-18 19:40:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-18 19:40:49,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:49,541 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:49,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:49,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:49,753 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1723835386, now seen corresponding path program 1 times [2022-11-18 19:40:49,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:49,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716678111] [2022-11-18 19:40:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:49,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716678111] [2022-11-18 19:40:49,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:40:49,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737737616] [2022-11-18 19:40:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:49,894 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:49,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:40:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:50,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:40:50,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-11-18 19:40:50,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:50,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737737616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:50,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:50,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:40:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983273537] [2022-11-18 19:40:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:50,698 INFO L87 Difference]: Start difference. First operand 352 states and 582 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 19:40:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:50,736 INFO L93 Difference]: Finished difference Result 681 states and 1132 transitions. [2022-11-18 19:40:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:50,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 237 [2022-11-18 19:40:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:50,740 INFO L225 Difference]: With dead ends: 681 [2022-11-18 19:40:50,740 INFO L226 Difference]: Without dead ends: 343 [2022-11-18 19:40:50,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:50,743 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:50,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-18 19:40:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-11-18 19:40:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 204 states have (on average 1.1323529411764706) internal successors, (231), 213 states have internal predecessors, (231), 102 states have call successors, (102), 27 states have call predecessors, (102), 36 states have return successors, (236), 102 states have call predecessors, (236), 101 states have call successors, (236) [2022-11-18 19:40:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 569 transitions. [2022-11-18 19:40:50,811 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 569 transitions. Word has length 237 [2022-11-18 19:40:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:50,812 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 569 transitions. [2022-11-18 19:40:50,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 19:40:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 569 transitions. [2022-11-18 19:40:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-18 19:40:50,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:50,815 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:50,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-18 19:40:51,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:40:51,027 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1065253811, now seen corresponding path program 1 times [2022-11-18 19:40:51,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:51,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901967114] [2022-11-18 19:40:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:51,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:51,126 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:51,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322879093] [2022-11-18 19:40:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:51,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:51,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:51,128 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:51,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:40:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:51,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:40:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:51,936 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 21 treesize of output 9 [2022-11-18 19:40:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 241 proven. 27 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 19:40:52,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 50 proven. 29 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-11-18 19:40:53,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901967114] [2022-11-18 19:40:53,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322879093] [2022-11-18 19:40:53,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322879093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:53,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:53,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-11-18 19:40:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596459956] [2022-11-18 19:40:53,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:40:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:40:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:40:53,198 INFO L87 Difference]: Start difference. First operand 343 states and 569 transitions. Second operand has 26 states, 21 states have (on average 5.666666666666667) internal successors, (119), 19 states have internal predecessors, (119), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-18 19:40:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:54,251 INFO L93 Difference]: Finished difference Result 570 states and 916 transitions. [2022-11-18 19:40:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:40:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.666666666666667) internal successors, (119), 19 states have internal predecessors, (119), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42) Word has length 243 [2022-11-18 19:40:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:54,255 INFO L225 Difference]: With dead ends: 570 [2022-11-18 19:40:54,255 INFO L226 Difference]: Without dead ends: 322 [2022-11-18 19:40:54,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 456 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:40:54,258 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 25 mSDsluCounter, 5086 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:54,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 5353 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:40:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-18 19:40:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 297. [2022-11-18 19:40:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 178 states have (on average 1.1235955056179776) internal successors, (200), 184 states have internal predecessors, (200), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (159), 86 states have call predecessors, (159), 84 states have call successors, (159) [2022-11-18 19:40:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 444 transitions. [2022-11-18 19:40:54,290 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 444 transitions. Word has length 243 [2022-11-18 19:40:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:54,291 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 444 transitions. [2022-11-18 19:40:54,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.666666666666667) internal successors, (119), 19 states have internal predecessors, (119), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-18 19:40:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 444 transitions. [2022-11-18 19:40:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-18 19:40:54,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:54,294 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:54,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:40:54,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash 334148176, now seen corresponding path program 1 times [2022-11-18 19:40:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:54,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645638105] [2022-11-18 19:40:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:54,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:54,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353998021] [2022-11-18 19:40:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:54,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:54,607 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:54,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:40:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:55,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-18 19:40:55,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:55,763 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 19:40:55,769 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 19:40:55,967 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2893 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2893)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2895 Int)) (= |c_#memory_$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_2895))))) is different from true [2022-11-18 19:40:56,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:56,607 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 19:40:56,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 310 proven. 1 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-18 19:40:56,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645638105] [2022-11-18 19:40:57,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353998021] [2022-11-18 19:40:57,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353998021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:57,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:57,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-18 19:40:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67438145] [2022-11-18 19:40:57,414 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:57,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:40:57,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:40:57,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=461, Unknown=33, NotChecked=44, Total=600 [2022-11-18 19:40:57,416 INFO L87 Difference]: Start difference. First operand 297 states and 444 transitions. Second operand has 21 states, 18 states have (on average 4.944444444444445) internal successors, (89), 19 states have internal predecessors, (89), 8 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-11-18 19:41:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:00,016 INFO L93 Difference]: Finished difference Result 572 states and 922 transitions. [2022-11-18 19:41:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:41:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.944444444444445) internal successors, (89), 19 states have internal predecessors, (89), 8 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) Word has length 225 [2022-11-18 19:41:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:00,021 INFO L225 Difference]: With dead ends: 572 [2022-11-18 19:41:00,021 INFO L226 Difference]: Without dead ends: 357 [2022-11-18 19:41:00,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=107, Invalid=794, Unknown=33, NotChecked=58, Total=992 [2022-11-18 19:41:00,024 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 139 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1679 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:00,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1981 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1356 Invalid, 0 Unknown, 1679 Unchecked, 1.2s Time] [2022-11-18 19:41:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-18 19:41:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 297. [2022-11-18 19:41:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 178 states have (on average 1.1235955056179776) internal successors, (200), 184 states have internal predecessors, (200), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (157), 86 states have call predecessors, (157), 84 states have call successors, (157) [2022-11-18 19:41:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 442 transitions. [2022-11-18 19:41:00,067 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 442 transitions. Word has length 225 [2022-11-18 19:41:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:00,067 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 442 transitions. [2022-11-18 19:41:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.944444444444445) internal successors, (89), 19 states have internal predecessors, (89), 8 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-11-18 19:41:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 442 transitions. [2022-11-18 19:41:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-18 19:41:00,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:00,071 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:00,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:00,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:41:00,283 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -95510130, now seen corresponding path program 1 times [2022-11-18 19:41:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:00,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928757307] [2022-11-18 19:41:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:00,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:00,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423342805] [2022-11-18 19:41:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:00,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:00,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:00,391 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:00,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:41:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:01,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:41:01,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 19:41:01,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928757307] [2022-11-18 19:41:01,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423342805] [2022-11-18 19:41:01,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423342805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:01,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:01,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741106125] [2022-11-18 19:41:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:01,248 INFO L87 Difference]: Start difference. First operand 297 states and 442 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-18 19:41:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:01,509 INFO L93 Difference]: Finished difference Result 565 states and 850 transitions. [2022-11-18 19:41:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 225 [2022-11-18 19:41:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:01,512 INFO L225 Difference]: With dead ends: 565 [2022-11-18 19:41:01,512 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 19:41:01,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 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 19:41:01,514 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 13 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:01,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 995 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 19:41:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 292. [2022-11-18 19:41:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 175 states have (on average 1.12) internal successors, (196), 180 states have internal predecessors, (196), 84 states have call successors, (84), 26 states have call predecessors, (84), 32 states have return successors, (139), 85 states have call predecessors, (139), 83 states have call successors, (139) [2022-11-18 19:41:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 419 transitions. [2022-11-18 19:41:01,546 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 419 transitions. Word has length 225 [2022-11-18 19:41:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:01,547 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 419 transitions. [2022-11-18 19:41:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-18 19:41:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 419 transitions. [2022-11-18 19:41:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-18 19:41:01,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:01,549 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:01,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:01,761 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1308138620, now seen corresponding path program 2 times [2022-11-18 19:41:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:01,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586782452] [2022-11-18 19:41:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:01,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:01,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727202715] [2022-11-18 19:41:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:01,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:01,863 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:01,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:41:03,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:03,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-18 19:41:03,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:03,505 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:41:03,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:41:03,839 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 19:41:03,846 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 19:41:04,093 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3342 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3342) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3341 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3341)))) is different from true [2022-11-18 19:41:04,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:04,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:41:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:04,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:41:04,611 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:41:04,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:41:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-18 19:41:04,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:05,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:05,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586782452] [2022-11-18 19:41:05,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:05,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727202715] [2022-11-18 19:41:05,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727202715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:05,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:05,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-18 19:41:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423459582] [2022-11-18 19:41:05,379 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:05,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:41:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:41:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=4, NotChecked=56, Total=930 [2022-11-18 19:41:05,381 INFO L87 Difference]: Start difference. First operand 292 states and 419 transitions. Second operand has 23 states, 20 states have (on average 3.95) internal successors, (79), 19 states have internal predecessors, (79), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-18 19:41:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:07,390 INFO L93 Difference]: Finished difference Result 574 states and 818 transitions. [2022-11-18 19:41:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:41:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.95) internal successors, (79), 19 states have internal predecessors, (79), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) Word has length 225 [2022-11-18 19:41:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:07,393 INFO L225 Difference]: With dead ends: 574 [2022-11-18 19:41:07,393 INFO L226 Difference]: Without dead ends: 310 [2022-11-18 19:41:07,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 313 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=167, Invalid=1458, Unknown=19, NotChecked=78, Total=1722 [2022-11-18 19:41:07,396 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 204 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1775 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:07,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1493 Invalid, 3657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1611 Invalid, 0 Unknown, 1775 Unchecked, 1.5s Time] [2022-11-18 19:41:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-18 19:41:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 292. [2022-11-18 19:41:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 175 states have (on average 1.12) internal successors, (196), 180 states have internal predecessors, (196), 84 states have call successors, (84), 26 states have call predecessors, (84), 32 states have return successors, (138), 85 states have call predecessors, (138), 83 states have call successors, (138) [2022-11-18 19:41:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 418 transitions. [2022-11-18 19:41:07,447 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 418 transitions. Word has length 225 [2022-11-18 19:41:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:07,448 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 418 transitions. [2022-11-18 19:41:07,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.95) internal successors, (79), 19 states have internal predecessors, (79), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-18 19:41:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 418 transitions. [2022-11-18 19:41:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-18 19:41:07,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:07,451 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:07,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:07,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:07,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash -264033795, now seen corresponding path program 2 times [2022-11-18 19:41:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120586867] [2022-11-18 19:41:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:07,750 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:07,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961959248] [2022-11-18 19:41:07,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:07,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:07,752 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:07,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:41:08,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:08,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:08,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 3121 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-18 19:41:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:08,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-18 19:41:09,043 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3579 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3580 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3580))) (= |c_#memory_$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_3579))))) is different from true [2022-11-18 19:41:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 281 proven. 23 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-18 19:41:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120586867] [2022-11-18 19:41:10,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:10,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961959248] [2022-11-18 19:41:10,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961959248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:10,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:10,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-18 19:41:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223487292] [2022-11-18 19:41:10,572 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:10,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:41:10,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:41:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=570, Unknown=23, NotChecked=48, Total=702 [2022-11-18 19:41:10,573 INFO L87 Difference]: Start difference. First operand 292 states and 418 transitions. Second operand has 23 states, 18 states have (on average 5.555555555555555) internal successors, (100), 22 states have internal predecessors, (100), 11 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 11 states have call successors, (33) [2022-11-18 19:41:12,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:12,914 INFO L93 Difference]: Finished difference Result 511 states and 737 transitions. [2022-11-18 19:41:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:41:12,915 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 5.555555555555555) internal successors, (100), 22 states have internal predecessors, (100), 11 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 11 states have call successors, (33) Word has length 237 [2022-11-18 19:41:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:12,918 INFO L225 Difference]: With dead ends: 511 [2022-11-18 19:41:12,918 INFO L226 Difference]: Without dead ends: 311 [2022-11-18 19:41:12,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=1329, Unknown=25, NotChecked=74, Total=1560 [2022-11-18 19:41:12,920 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 104 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 3513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:12,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1994 Invalid, 3513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2271 Invalid, 0 Unknown, 1153 Unchecked, 1.8s Time] [2022-11-18 19:41:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-18 19:41:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 292. [2022-11-18 19:41:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 175 states have (on average 1.12) internal successors, (196), 180 states have internal predecessors, (196), 84 states have call successors, (84), 26 states have call predecessors, (84), 32 states have return successors, (137), 85 states have call predecessors, (137), 83 states have call successors, (137) [2022-11-18 19:41:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 417 transitions. [2022-11-18 19:41:12,993 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 417 transitions. Word has length 237 [2022-11-18 19:41:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:12,994 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 417 transitions. [2022-11-18 19:41:12,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 5.555555555555555) internal successors, (100), 22 states have internal predecessors, (100), 11 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 11 states have call successors, (33) [2022-11-18 19:41:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 417 transitions. [2022-11-18 19:41:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-18 19:41:12,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:12,997 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:13,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:13,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 19:41:13,209 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1917818233, now seen corresponding path program 1 times [2022-11-18 19:41:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:13,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900362496] [2022-11-18 19:41:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:13,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:13,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975566209] [2022-11-18 19:41:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:13,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:13,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:13,328 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:13,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:41:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:14,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 3122 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 19:41:14,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:14,353 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:41:14,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:41:14,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:41:14,697 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 19:41:14,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:41:14,858 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:41:14,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:41:15,054 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3837 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3837))) is different from true [2022-11-18 19:41:15,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-18 19:41:15,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900362496] [2022-11-18 19:41:15,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975566209] [2022-11-18 19:41:15,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975566209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:15,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:15,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-18 19:41:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093462465] [2022-11-18 19:41:15,680 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:41:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:41:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=425, Unknown=7, NotChecked=42, Total=552 [2022-11-18 19:41:15,682 INFO L87 Difference]: Start difference. First operand 292 states and 417 transitions. Second operand has 23 states, 21 states have (on average 4.142857142857143) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-18 19:41:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:17,170 INFO L93 Difference]: Finished difference Result 596 states and 846 transitions. [2022-11-18 19:41:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:41:17,173 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.142857142857143) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 233 [2022-11-18 19:41:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:17,175 INFO L225 Difference]: With dead ends: 596 [2022-11-18 19:41:17,176 INFO L226 Difference]: Without dead ends: 332 [2022-11-18 19:41:17,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 385 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=683, Unknown=18, NotChecked=54, Total=870 [2022-11-18 19:41:17,178 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 163 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1878 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:17,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1114 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1210 Invalid, 0 Unknown, 1878 Unchecked, 1.2s Time] [2022-11-18 19:41:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-18 19:41:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 312. [2022-11-18 19:41:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 187 states have (on average 1.1176470588235294) internal successors, (209), 193 states have internal predecessors, (209), 88 states have call successors, (88), 29 states have call predecessors, (88), 36 states have return successors, (147), 89 states have call predecessors, (147), 87 states have call successors, (147) [2022-11-18 19:41:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 444 transitions. [2022-11-18 19:41:17,210 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 444 transitions. Word has length 233 [2022-11-18 19:41:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:17,210 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 444 transitions. [2022-11-18 19:41:17,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.142857142857143) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-18 19:41:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 444 transitions. [2022-11-18 19:41:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-18 19:41:17,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:17,213 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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 19:41:17,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:17,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:41:17,427 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash 524623683, now seen corresponding path program 1 times [2022-11-18 19:41:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:17,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242217262] [2022-11-18 19:41:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:17,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:17,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:17,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106371082] [2022-11-18 19:41:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:17,540 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:17,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:41:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:18,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 247 conjunts are in the unsatisfiable core [2022-11-18 19:41:18,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:18,571 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:41:18,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:41:18,811 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 13 treesize of output 9 [2022-11-18 19:41:18,819 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 19:41:18,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-18 19:41:18,973 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 19:41:18,978 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 34 treesize of output 27 [2022-11-18 19:41:19,043 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-18 19:41:19,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-11-18 19:41:19,249 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4073 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4073))) (exists ((v_ArrVal_4072 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4072)))) is different from true [2022-11-18 19:41:19,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:19,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 19:41:19,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:19,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:41:19,607 INFO L321 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-11-18 19:41:19,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 19:41:20,463 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4076 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_4076))) (exists ((v_ArrVal_4075 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_4075) |c_#memory_int|)) (exists ((v_ArrVal_4074 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_4074) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:41:20,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 19:41:20,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 19:41:20,495 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 19:41:20,643 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4077 (Array Int Int)) (v_ArrVal_4080 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4078 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4078))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4080)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4077) |c_#memory_int|))) is different from true [2022-11-18 19:41:20,674 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4077 (Array Int Int)) (v_ArrVal_4080 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4078 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4080)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4078))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4077) |c_#memory_int|))) is different from true [2022-11-18 19:41:20,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:20,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:41:20,761 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:20,761 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 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 19:41:20,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:20,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:41:20,793 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 9 treesize of output 5 [2022-11-18 19:41:22,036 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4083 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4084 (Array Int Int))) (and (= |c_#memory_$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_4083))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4084) |c_#memory_int|))) is different from true [2022-11-18 19:41:22,318 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_4083 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4084 (Array Int Int))) (and (= |c_#memory_$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_4083))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4084) |c_#memory_int|)))) is different from true [2022-11-18 19:41:22,363 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 19:41:22,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:22,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:41:22,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 19:41:40,867 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4086 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4087 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4086)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4087)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:41:40,887 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4086 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4087 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4086)) (= |c_#memory_$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_4087))))) is different from true [2022-11-18 19:41:40,990 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:40,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-18 19:41:40,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:41,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:41:41,011 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 19:41:59,404 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4088 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4090 Int)) (and (= |c_#memory_$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_4090))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4088) |c_#memory_int|))) is different from true [2022-11-18 19:41:59,425 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 19:41:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:59,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:41:59,466 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 6 treesize of output 5 [2022-11-18 19:41:59,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 19:42:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 68 proven. 226 refuted. 5 times theorem prover too weak. 107 trivial. 103 not checked. [2022-11-18 19:42:00,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:01,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242217262] [2022-11-18 19:42:01,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:01,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106371082] [2022-11-18 19:42:01,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106371082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:01,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:01,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2022-11-18 19:42:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362573232] [2022-11-18 19:42:01,221 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 19:42:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 19:42:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2615, Unknown=46, NotChecked=1008, Total=3906 [2022-11-18 19:42:01,224 INFO L87 Difference]: Start difference. First operand 312 states and 444 transitions. Second operand has 56 states, 49 states have (on average 2.7346938775510203) internal successors, (134), 52 states have internal predecessors, (134), 23 states have call successors, (36), 13 states have call predecessors, (36), 21 states have return successors, (35), 21 states have call predecessors, (35), 22 states have call successors, (35) [2022-11-18 19:42:35,290 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4077 (Array Int Int)) (v_ArrVal_4080 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4078 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4080)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4078))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4077) |c_#memory_int|))) (exists ((v_ArrVal_4086 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4087 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4086)) (= |c_#memory_$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_4087)))))) is different from true [2022-11-18 19:42:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:40,218 INFO L93 Difference]: Finished difference Result 774 states and 1188 transitions. [2022-11-18 19:42:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:42:40,219 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 49 states have (on average 2.7346938775510203) internal successors, (134), 52 states have internal predecessors, (134), 23 states have call successors, (36), 13 states have call predecessors, (36), 21 states have return successors, (35), 21 states have call predecessors, (35), 22 states have call successors, (35) Word has length 239 [2022-11-18 19:42:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:40,223 INFO L225 Difference]: With dead ends: 774 [2022-11-18 19:42:40,223 INFO L226 Difference]: Without dead ends: 488 [2022-11-18 19:42:40,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 176 SyntacticMatches, 21 SemanticMatches, 86 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 74.4s TimeCoverageRelationStatistics Valid=504, Invalid=5436, Unknown=106, NotChecked=1610, Total=7656 [2022-11-18 19:42:40,227 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 542 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 13249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7443 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:40,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 2624 Invalid, 13249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 5238 Invalid, 0 Unknown, 7443 Unchecked, 4.5s Time] [2022-11-18 19:42:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-18 19:42:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 388. [2022-11-18 19:42:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 231 states have (on average 1.121212121212121) internal successors, (259), 241 states have internal predecessors, (259), 112 states have call successors, (112), 34 states have call predecessors, (112), 44 states have return successors, (200), 112 states have call predecessors, (200), 111 states have call successors, (200) [2022-11-18 19:42:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 571 transitions. [2022-11-18 19:42:40,276 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 571 transitions. Word has length 239 [2022-11-18 19:42:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:40,276 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 571 transitions. [2022-11-18 19:42:40,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 49 states have (on average 2.7346938775510203) internal successors, (134), 52 states have internal predecessors, (134), 23 states have call successors, (36), 13 states have call predecessors, (36), 21 states have return successors, (35), 21 states have call predecessors, (35), 22 states have call successors, (35) [2022-11-18 19:42:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 571 transitions. [2022-11-18 19:42:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-18 19:42:40,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:40,280 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:40,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:40,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:40,492 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1363571527, now seen corresponding path program 1 times [2022-11-18 19:42:40,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:40,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294019445] [2022-11-18 19:42:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:40,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895368033] [2022-11-18 19:42:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:40,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:40,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:40,578 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:40,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:42:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:41,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3122 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-18 19:42:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:41,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:42:41,961 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4327 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_4327) |c_#memory_int|)) is different from true [2022-11-18 19:42:41,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 19:42:42,056 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4328 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_4328)))) is different from true [2022-11-18 19:42:42,066 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_4328 Int)) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4328)) |c_#memory_int|)) is different from true [2022-11-18 19:42:42,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:42,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:42:42,582 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4331 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4331)) |c_#memory_int|)) is different from true [2022-11-18 19:42:42,669 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4331 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4331)))) (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 19:42:42,678 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_4331 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4331))))) is different from true [2022-11-18 19:42:42,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 327 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 22 not checked. [2022-11-18 19:42:42,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:42,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:42,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294019445] [2022-11-18 19:42:42,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895368033] [2022-11-18 19:42:42,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895368033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:42,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:42,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-18 19:42:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966662542] [2022-11-18 19:42:42,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:42,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:42:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:42:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=325, Unknown=7, NotChecked=246, Total=650 [2022-11-18 19:42:42,968 INFO L87 Difference]: Start difference. First operand 388 states and 571 transitions. Second operand has 25 states, 22 states have (on average 4.954545454545454) internal successors, (109), 24 states have internal predecessors, (109), 13 states have call successors, (34), 4 states have call predecessors, (34), 9 states have return successors, (33), 13 states have call predecessors, (33), 13 states have call successors, (33) [2022-11-18 19:42:43,382 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4328 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_4328)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4331 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4331)) |c_#memory_int|))) is different from true [2022-11-18 19:42:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:45,874 INFO L93 Difference]: Finished difference Result 706 states and 1116 transitions. [2022-11-18 19:42:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:42:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.954545454545454) internal successors, (109), 24 states have internal predecessors, (109), 13 states have call successors, (34), 4 states have call predecessors, (34), 9 states have return successors, (33), 13 states have call predecessors, (33), 13 states have call successors, (33) Word has length 233 [2022-11-18 19:42:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:45,878 INFO L225 Difference]: With dead ends: 706 [2022-11-18 19:42:45,878 INFO L226 Difference]: Without dead ends: 462 [2022-11-18 19:42:45,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 267 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=513, Unknown=8, NotChecked=364, Total=992 [2022-11-18 19:42:45,880 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 140 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 6319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3419 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:45,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1768 Invalid, 6319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2824 Invalid, 0 Unknown, 3419 Unchecked, 2.6s Time] [2022-11-18 19:42:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-18 19:42:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 375. [2022-11-18 19:42:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 220 states have (on average 1.1) internal successors, (242), 228 states have internal predecessors, (242), 111 states have call successors, (111), 35 states have call predecessors, (111), 43 states have return successors, (195), 111 states have call predecessors, (195), 110 states have call successors, (195) [2022-11-18 19:42:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 548 transitions. [2022-11-18 19:42:45,933 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 548 transitions. Word has length 233 [2022-11-18 19:42:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:45,934 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 548 transitions. [2022-11-18 19:42:45,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.954545454545454) internal successors, (109), 24 states have internal predecessors, (109), 13 states have call successors, (34), 4 states have call predecessors, (34), 9 states have return successors, (33), 13 states have call predecessors, (33), 13 states have call successors, (33) [2022-11-18 19:42:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 548 transitions. [2022-11-18 19:42:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-18 19:42:45,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:45,938 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-18 19:42:45,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:42:46,147 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash 59410171, now seen corresponding path program 1 times [2022-11-18 19:42:46,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211772319] [2022-11-18 19:42:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:46,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:46,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:46,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273462040] [2022-11-18 19:42:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:46,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:46,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:46,224 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:46,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:42:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:47,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3119 conjuncts, 190 conjunts are in the unsatisfiable core [2022-11-18 19:42:47,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:47,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:42:47,334 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 19:42:47,414 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 19:42:47,557 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4577 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4577)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:42:51,721 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4577 Int)) (= |c_#memory_$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|) 0 v_ArrVal_4577))))) is different from true [2022-11-18 19:42:51,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:51,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:43:02,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 19:43:02,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2022-11-18 19:43:02,685 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4580 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4580)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:43:02,695 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4580 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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|) 0 v_ArrVal_4580)))) is different from true [2022-11-18 19:43:02,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:02,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:43:23,656 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4582 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4582)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:43:23,668 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4582 Int)) (= |c_#memory_$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|) 0 v_ArrVal_4582)))) is different from true [2022-11-18 19:43:23,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:23,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:43:27,888 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4583 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4583)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:43:27,900 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4583 Int)) (= |c_#memory_$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|) 0 v_ArrVal_4583)))) is different from true [2022-11-18 19:43:27,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:27,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:43:32,186 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4585 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4585)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:43:32,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:32,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:43:32,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 19:43:32,300 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4588 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4588)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:43:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 110 proven. 76 refuted. 0 times theorem prover too weak. 210 trivial. 113 not checked. [2022-11-18 19:43:52,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:56,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211772319] [2022-11-18 19:43:56,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:43:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273462040] [2022-11-18 19:43:56,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273462040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:56,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:56,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-18 19:43:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262867057] [2022-11-18 19:43:56,905 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:56,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 19:43:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 19:43:56,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=857, Unknown=47, NotChecked=690, Total=1722 [2022-11-18 19:43:56,908 INFO L87 Difference]: Start difference. First operand 375 states and 548 transitions. Second operand has 41 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 38 states have internal predecessors, (111), 15 states have call successors, (29), 7 states have call predecessors, (29), 18 states have return successors, (31), 15 states have call predecessors, (31), 14 states have call successors, (31) [2022-11-18 19:44:03,654 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4585 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4585)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4577 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4577)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4583 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4583)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4588 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4588)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4580 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4580)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4582 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4582)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:44:27,879 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4582 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4582)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4577 Int)) (= |c_#memory_$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|) 0 v_ArrVal_4577))))) is different from true [2022-11-18 19:44:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:35,062 INFO L93 Difference]: Finished difference Result 506 states and 732 transitions. [2022-11-18 19:44:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:44:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 38 states have internal predecessors, (111), 15 states have call successors, (29), 7 states have call predecessors, (29), 18 states have return successors, (31), 15 states have call predecessors, (31), 14 states have call successors, (31) Word has length 233 [2022-11-18 19:44:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:35,066 INFO L225 Difference]: With dead ends: 506 [2022-11-18 19:44:35,066 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 19:44:35,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 181 SyntacticMatches, 27 SemanticMatches, 55 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 105.2s TimeCoverageRelationStatistics Valid=218, Invalid=1754, Unknown=56, NotChecked=1164, Total=3192 [2022-11-18 19:44:35,069 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 193 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 5837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4141 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:35,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1334 Invalid, 5837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1522 Invalid, 0 Unknown, 4141 Unchecked, 1.3s Time] [2022-11-18 19:44:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 19:44:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2022-11-18 19:44:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 242 states have (on average 1.0991735537190082) internal successors, (266), 250 states have internal predecessors, (266), 127 states have call successors, (127), 38 states have call predecessors, (127), 46 states have return successors, (221), 127 states have call predecessors, (221), 126 states have call successors, (221) [2022-11-18 19:44:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 614 transitions. [2022-11-18 19:44:35,122 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 614 transitions. Word has length 233 [2022-11-18 19:44:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:35,123 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 614 transitions. [2022-11-18 19:44:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 38 states have internal predecessors, (111), 15 states have call successors, (29), 7 states have call predecessors, (29), 18 states have return successors, (31), 15 states have call predecessors, (31), 14 states have call successors, (31) [2022-11-18 19:44:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 614 transitions. [2022-11-18 19:44:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-18 19:44:35,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:35,132 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-11-18 19:44:35,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-18 19:44:35,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:44:35,349 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1142042821, now seen corresponding path program 1 times [2022-11-18 19:44:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:35,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374379896] [2022-11-18 19:44:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:35,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:44:35,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487957975] [2022-11-18 19:44:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:35,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:35,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:35,450 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:35,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:44:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:36,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 3123 conjuncts, 211 conjunts are in the unsatisfiable core [2022-11-18 19:44:36,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:36,466 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:44:36,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:44:36,721 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 19:44:36,732 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 19:44:36,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-18 19:44:36,905 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 45 treesize of output 32 [2022-11-18 19:44:36,921 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 19:44:37,012 INFO L321 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2022-11-18 19:44:37,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2022-11-18 19:44:37,209 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4826 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4826) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4825 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4825) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 19:44:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:37,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2022-11-18 19:44:37,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:37,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:44:37,390 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:44:37,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:44:38,030 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4828 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_4828) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4827 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_4827)))) is different from true [2022-11-18 19:44:38,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:44:38,052 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 37 treesize of output 35 [2022-11-18 19:44:38,179 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4831 Int) (v_ArrVal_4829 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4829))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4831)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 19:44:38,205 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4831 Int) (v_ArrVal_4829 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4831))) (= |c_#memory_$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_4829))))) is different from true [2022-11-18 19:44:38,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:38,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2022-11-18 19:44:38,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:38,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:44:39,302 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4835 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4833 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4835))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4833) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 19:44:39,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-11-18 19:44:39,911 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 23 treesize of output 19 [2022-11-18 19:44:39,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:39,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2022-11-18 19:45:00,749 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4837 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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_4837)))) is different from true [2022-11-18 19:45:00,794 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4837 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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|) 0 v_ArrVal_4837)))) is different from true [2022-11-18 19:45:00,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:45:00,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2022-11-18 19:45:25,185 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4838 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4838)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 19:45:25,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:45:25,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2022-11-18 19:45:25,268 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 37 treesize of output 35 [2022-11-18 19:45:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 67 proven. 190 refuted. 7 times theorem prover too weak. 149 trivial. 96 not checked. [2022-11-18 19:45:26,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:45:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:26,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374379896] [2022-11-18 19:45:26,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:45:26,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487957975] [2022-11-18 19:45:26,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487957975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:26,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:45:26,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-11-18 19:45:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692792781] [2022-11-18 19:45:26,780 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:45:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 19:45:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 19:45:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1806, Unknown=99, NotChecked=760, Total=2862 [2022-11-18 19:45:26,783 INFO L87 Difference]: Start difference. First operand 416 states and 614 transitions. Second operand has 48 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 46 states have internal predecessors, (128), 21 states have call successors, (36), 10 states have call predecessors, (36), 19 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-11-18 19:45:46,352 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4837 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4837)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4831 Int) (v_ArrVal_4829 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4831))) (= |c_#memory_$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_4829)))))) is different from true [2022-11-18 19:45:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:56,668 INFO L93 Difference]: Finished difference Result 694 states and 1116 transitions. [2022-11-18 19:45:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:45:56,669 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 46 states have internal predecessors, (128), 21 states have call successors, (36), 10 states have call predecessors, (36), 19 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) Word has length 239 [2022-11-18 19:45:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:56,672 INFO L225 Difference]: With dead ends: 694 [2022-11-18 19:45:56,672 INFO L226 Difference]: Without dead ends: 594 [2022-11-18 19:45:56,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 186 SyntacticMatches, 22 SemanticMatches, 72 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 74.7s TimeCoverageRelationStatistics Valid=374, Invalid=3662, Unknown=160, NotChecked=1206, Total=5402 [2022-11-18 19:45:56,675 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 305 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 12604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8449 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:56,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 2598 Invalid, 12604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3899 Invalid, 0 Unknown, 8449 Unchecked, 3.2s Time] [2022-11-18 19:45:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-18 19:45:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 509. [2022-11-18 19:45:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 293 states have (on average 1.1023890784982935) internal successors, (323), 304 states have internal predecessors, (323), 161 states have call successors, (161), 44 states have call predecessors, (161), 54 states have return successors, (286), 160 states have call predecessors, (286), 160 states have call successors, (286) [2022-11-18 19:45:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 770 transitions. [2022-11-18 19:45:56,774 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 770 transitions. Word has length 239 [2022-11-18 19:45:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:56,774 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 770 transitions. [2022-11-18 19:45:56,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 46 states have internal predecessors, (128), 21 states have call successors, (36), 10 states have call predecessors, (36), 19 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-11-18 19:45:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 770 transitions. [2022-11-18 19:45:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-18 19:45:56,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:56,780 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:56,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:45:56,993 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1896507323, now seen corresponding path program 1 times [2022-11-18 19:45:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:56,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395156514] [2022-11-18 19:45:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:57,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:45:57,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552732433] [2022-11-18 19:45:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:57,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:57,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:57,069 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:57,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:45:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:58,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 3119 conjuncts, 361 conjunts are in the unsatisfiable core [2022-11-18 19:45:58,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:58,092 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:45:58,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:45:58,348 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 19:45:58,367 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 19:45:58,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-18 19:45:58,531 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 19:45:58,536 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 19:45:58,540 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 34 treesize of output 27 [2022-11-18 19:45:58,601 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-18 19:45:58,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-11-18 19:45:58,847 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5087 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5087) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5089 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5089) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5088 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5088) |c_#memory_int|))) is different from true [2022-11-18 19:45:59,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:45:59,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 19:45:59,313 INFO L321 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-11-18 19:45:59,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 19:45:59,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:45:59,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:46:00,174 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5091 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5091))) (exists ((v_ArrVal_5090 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5090))) (exists ((v_ArrVal_5092 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5092) |c_#memory_int|))) is different from true [2022-11-18 19:46:00,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 19:46:00,202 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 19:46:00,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:46:00,368 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5097 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5097)))) (exists ((v_ArrVal_5096 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5096) |c_#memory_int|)) (exists ((v_ArrVal_5095 Int)) (= |c_#memory_$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_5095))))) is different from true [2022-11-18 19:46:00,394 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5097 Int) (v_ArrVal_5095 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_5096 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5096) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_5095))) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_5097)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:46:00,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:00,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:46:00,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:00,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:46:00,573 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:46:00,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-18 19:46:00,578 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 19:46:02,217 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5098 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5098)) |c_#memory_int|)) (exists ((v_ArrVal_5103 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5103)))) (exists ((v_ArrVal_5102 Int)) (= |c_#memory_$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_5102))))) is different from true [2022-11-18 19:46:03,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:03,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:46:03,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:03,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:46:03,642 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 19 treesize of output 11 [2022-11-18 19:46:04,406 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5107 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5107)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5106 Int)) (= |c_#memory_$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_5106))))) is different from true [2022-11-18 19:46:04,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:04,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:46:04,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:04,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:46:04,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:04,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:46:04,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 9 [2022-11-18 19:46:05,003 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 19:46:05,559 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5112 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5112)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5110 Int)) (= |c_#memory_$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_5110)))) (exists ((v_ArrVal_5109 Int) (|v___CPROVER_overflow_mult_~#c~1.base_710| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_710| v_ArrVal_5109)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_710|) 0)))) is different from true [2022-11-18 19:46:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:05,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:46:05,629 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:46:05,629 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 19:46:05,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:05,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 19:46:05,841 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 19:46:05,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 19:46:06,235 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5117 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5117)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5119 Int)) (= |c_#memory_$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_5119))))) is different from true [2022-11-18 19:46:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 109 proven. 232 refuted. 2 times theorem prover too weak. 95 trivial. 71 not checked. [2022-11-18 19:46:07,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:08,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395156514] [2022-11-18 19:46:08,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:46:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552732433] [2022-11-18 19:46:08,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552732433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:08,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:08,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2022-11-18 19:46:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759934092] [2022-11-18 19:46:08,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:08,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-18 19:46:08,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:08,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-18 19:46:08,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=3783, Unknown=37, NotChecked=1048, Total=5112 [2022-11-18 19:46:08,155 INFO L87 Difference]: Start difference. First operand 509 states and 770 transitions. Second operand has 68 states, 58 states have (on average 2.2586206896551726) internal successors, (131), 61 states have internal predecessors, (131), 24 states have call successors, (35), 12 states have call predecessors, (35), 22 states have return successors, (34), 22 states have call predecessors, (34), 23 states have call successors, (34) [2022-11-18 19:46:09,474 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|)) (.cse1 (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|))) (and (exists ((v_ArrVal_5097 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5097)))) (exists ((v_ArrVal_5112 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5112)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5110 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5110)))) (exists ((v_ArrVal_5107 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5107)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5117 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5117)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5096 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5096) |c_#memory_int|)) (exists ((v_ArrVal_5087 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5087) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5089 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5089) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5106 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5106)))) (exists ((v_ArrVal_5098 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5098)) |c_#memory_int|)) (exists ((v_ArrVal_5103 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5103)))) (exists ((v_ArrVal_5102 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5102)))) (exists ((v_ArrVal_5095 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5095)))) (exists ((v_ArrVal_5109 Int) (|v___CPROVER_overflow_mult_~#c~1.base_710| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_710| v_ArrVal_5109)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_710|) 0))) (exists ((v_ArrVal_5119 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5119)))) (exists ((v_ArrVal_5088 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5088) |c_#memory_int|)))) is different from true [2022-11-18 19:46:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:13,728 INFO L93 Difference]: Finished difference Result 737 states and 1078 transitions. [2022-11-18 19:46:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 19:46:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 58 states have (on average 2.2586206896551726) internal successors, (131), 61 states have internal predecessors, (131), 24 states have call successors, (35), 12 states have call predecessors, (35), 22 states have return successors, (34), 22 states have call predecessors, (34), 23 states have call successors, (34) Word has length 233 [2022-11-18 19:46:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:13,734 INFO L225 Difference]: With dead ends: 737 [2022-11-18 19:46:13,734 INFO L226 Difference]: Without dead ends: 651 [2022-11-18 19:46:13,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 148 SyntacticMatches, 21 SemanticMatches, 95 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2521 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=418, Invalid=7217, Unknown=57, NotChecked=1620, Total=9312 [2022-11-18 19:46:13,736 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 200 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 2996 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 8886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5631 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:13,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 3079 Invalid, 8886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2996 Invalid, 0 Unknown, 5631 Unchecked, 2.6s Time] [2022-11-18 19:46:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-18 19:46:13,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 632. [2022-11-18 19:46:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 370 states have (on average 1.1) internal successors, (407), 381 states have internal predecessors, (407), 195 states have call successors, (195), 56 states have call predecessors, (195), 66 states have return successors, (338), 194 states have call predecessors, (338), 194 states have call successors, (338) [2022-11-18 19:46:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 940 transitions. [2022-11-18 19:46:13,826 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 940 transitions. Word has length 233 [2022-11-18 19:46:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:13,827 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 940 transitions. [2022-11-18 19:46:13,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 58 states have (on average 2.2586206896551726) internal successors, (131), 61 states have internal predecessors, (131), 24 states have call successors, (35), 12 states have call predecessors, (35), 22 states have return successors, (34), 22 states have call predecessors, (34), 23 states have call successors, (34) [2022-11-18 19:46:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 940 transitions. [2022-11-18 19:46:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-18 19:46:13,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:13,834 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:13,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:14,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:46:14,047 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:14,048 INFO L85 PathProgramCache]: Analyzing trace with hash -221825709, now seen corresponding path program 1 times [2022-11-18 19:46:14,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:14,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072332952] [2022-11-18 19:46:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:14,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:46:14,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531389498] [2022-11-18 19:46:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:14,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:14,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:14,122 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:14,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:46:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:15,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 236 conjunts are in the unsatisfiable core [2022-11-18 19:46:15,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:15,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:46:15,186 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 19:46:15,254 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 19:46:15,384 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5340 Int)) (= |c_#memory_$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_5340)))) is different from true [2022-11-18 19:46:15,540 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5340 Int)) (= |c_#memory_$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|) 0 v_ArrVal_5340))))) is different from true [2022-11-18 19:46:15,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:15,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:46:16,165 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5342 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5342) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5341 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5341)))) is different from true [2022-11-18 19:46:16,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:46:16,183 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 19:46:16,296 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5346 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5346)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5343 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_5343)) |c_#memory_int|))) is different from true [2022-11-18 19:46:16,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:16,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:46:16,436 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 31 treesize of output 26 [2022-11-18 19:46:16,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:16,440 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 19:46:17,557 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5350 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5347 (Array Int Int)) (v_ArrVal_5351 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5351))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5350)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5347) |c_#memory_int|))) is different from true [2022-11-18 19:46:18,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:46:18,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:18,354 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 19:46:18,370 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-18 19:46:18,371 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 19:46:18,381 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 19:46:18,387 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 19:46:18,849 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5353 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5353)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5352 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5352)))) is different from true [2022-11-18 19:46:19,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:19,028 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 19:46:19,055 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-18 19:46:19,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 37 [2022-11-18 19:46:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:19,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-18 19:46:33,701 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5356 Int)) (= |c_#memory_$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_5356)))) is different from true [2022-11-18 19:46:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 123 proven. 166 refuted. 17 times theorem prover too weak. 143 trivial. 60 not checked. [2022-11-18 19:46:42,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:44,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072332952] [2022-11-18 19:46:44,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:46:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531389498] [2022-11-18 19:46:44,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531389498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:44,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:44,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2022-11-18 19:46:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029390846] [2022-11-18 19:46:44,650 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-18 19:46:44,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:44,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-18 19:46:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2311, Unknown=65, NotChecked=728, Total=3306 [2022-11-18 19:46:44,651 INFO L87 Difference]: Start difference. First operand 632 states and 940 transitions. Second operand has 57 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 23 states have call successors, (38), 11 states have call predecessors, (38), 19 states have return successors, (37), 23 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-18 19:46:47,665 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|))) (and (exists ((v_ArrVal_5353 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5353)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5340 Int)) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5340)))) (exists ((v_ArrVal_5346 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5346)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5356 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5356)))) (exists ((v_ArrVal_5343 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5343)) |c_#memory_int|)) (exists ((v_ArrVal_5350 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5347 (Array Int Int)) (v_ArrVal_5351 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5351))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5350)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5347) |c_#memory_int|))) (exists ((v_ArrVal_5352 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5352))))) is different from true [2022-11-18 19:47:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:16,580 INFO L93 Difference]: Finished difference Result 798 states and 1196 transitions. [2022-11-18 19:47:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 19:47:16,581 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 23 states have call successors, (38), 11 states have call predecessors, (38), 19 states have return successors, (37), 23 states have call predecessors, (37), 22 states have call successors, (37) Word has length 236 [2022-11-18 19:47:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:16,584 INFO L225 Difference]: With dead ends: 798 [2022-11-18 19:47:16,584 INFO L226 Difference]: Without dead ends: 719 [2022-11-18 19:47:16,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 172 SyntacticMatches, 19 SemanticMatches, 79 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=470, Invalid=4706, Unknown=112, NotChecked=1192, Total=6480 [2022-11-18 19:47:16,586 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 347 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 8560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4827 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:16,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 2795 Invalid, 8560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 3462 Invalid, 0 Unknown, 4827 Unchecked, 2.9s Time] [2022-11-18 19:47:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-11-18 19:47:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 676. [2022-11-18 19:47:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 397 states have (on average 1.0982367758186398) internal successors, (436), 407 states have internal predecessors, (436), 206 states have call successors, (206), 62 states have call predecessors, (206), 72 states have return successors, (359), 206 states have call predecessors, (359), 205 states have call successors, (359) [2022-11-18 19:47:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1001 transitions. [2022-11-18 19:47:16,696 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1001 transitions. Word has length 236 [2022-11-18 19:47:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:16,697 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1001 transitions. [2022-11-18 19:47:16,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 23 states have call successors, (38), 11 states have call predecessors, (38), 19 states have return successors, (37), 23 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-18 19:47:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1001 transitions. [2022-11-18 19:47:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-18 19:47:16,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:16,704 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:16,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:16,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:47:16,924 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -108372659, now seen corresponding path program 2 times [2022-11-18 19:47:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:16,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241750171] [2022-11-18 19:47:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:17,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:17,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892284286] [2022-11-18 19:47:17,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:17,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:17,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:17,007 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:17,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:47:18,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:18,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:18,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 3103 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 19:47:18,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:19,462 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5567 Int) (v_ArrVal_5564 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5567)) |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5564)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 19:47:19,484 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5567 Int) (v_ArrVal_5564 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5564))) (= |c_#memory_$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_5567))))) is different from true [2022-11-18 19:47:19,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:47:19,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:47:19,732 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5570 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5571 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5570))) (= |c_#memory_$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_5571))))) is different from true [2022-11-18 19:47:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 343 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 19 not checked. [2022-11-18 19:47:20,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:20,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241750171] [2022-11-18 19:47:20,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:47:20,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892284286] [2022-11-18 19:47:20,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892284286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:20,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:47:20,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-18 19:47:20,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929066130] [2022-11-18 19:47:20,796 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:20,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:47:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:47:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=313, Unknown=19, NotChecked=114, Total=506 [2022-11-18 19:47:20,798 INFO L87 Difference]: Start difference. First operand 676 states and 1001 transitions. Second operand has 22 states, 20 states have (on average 5.8) internal successors, (116), 22 states have internal predecessors, (116), 9 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-18 19:47:21,178 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5570 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5571 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5570))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5571))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5567 Int) (v_ArrVal_5564 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5567)) |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5564)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-18 19:47:21,310 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5567 Int) (v_ArrVal_5564 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5564))) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5567))))) (let ((.cse0 (+ 32 |c_aws_array_list_is_valid_#in~list.offset|))) (or (not (= (select (select |c_#memory_$Pointer$.offset| |c_aws_array_list_is_valid_#in~list.base|) .cse0) 0)) (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_array_list_is_valid_#in~list.base|) .cse0) 0)))) (exists ((v_ArrVal_5570 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5571 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5571)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5570)))))) is different from true [2022-11-18 19:47:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:23,392 INFO L93 Difference]: Finished difference Result 1019 states and 1559 transitions. [2022-11-18 19:47:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:47:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.8) internal successors, (116), 22 states have internal predecessors, (116), 9 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 238 [2022-11-18 19:47:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:23,396 INFO L225 Difference]: With dead ends: 1019 [2022-11-18 19:47:23,397 INFO L226 Difference]: Without dead ends: 773 [2022-11-18 19:47:23,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 256 SyntacticMatches, 14 SemanticMatches, 28 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=500, Unknown=22, NotChecked=250, Total=870 [2022-11-18 19:47:23,399 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 135 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 4806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2788 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1575 Invalid, 4806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1927 Invalid, 0 Unknown, 2788 Unchecked, 2.0s Time] [2022-11-18 19:47:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-18 19:47:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 672. [2022-11-18 19:47:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 397 states have (on average 1.0982367758186398) internal successors, (436), 407 states have internal predecessors, (436), 202 states have call successors, (202), 62 states have call predecessors, (202), 72 states have return successors, (348), 202 states have call predecessors, (348), 201 states have call successors, (348) [2022-11-18 19:47:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 986 transitions. [2022-11-18 19:47:23,516 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 986 transitions. Word has length 238 [2022-11-18 19:47:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:23,516 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 986 transitions. [2022-11-18 19:47:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.8) internal successors, (116), 22 states have internal predecessors, (116), 9 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-11-18 19:47:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 986 transitions. [2022-11-18 19:47:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 19:47:23,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:23,523 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-11-18 19:47:23,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-18 19:47:23,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:47:23,739 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:23,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:23,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1559221173, now seen corresponding path program 1 times [2022-11-18 19:47:23,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:23,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752038272] [2022-11-18 19:47:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:23,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:23,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:23,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023627599] [2022-11-18 19:47:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:23,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:23,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:23,896 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:23,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:47:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:24,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 19:47:24,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:24,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-18 19:47:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-18 19:47:25,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:25,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752038272] [2022-11-18 19:47:25,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:47:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023627599] [2022-11-18 19:47:25,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023627599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:25,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:25,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 19:47:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095321617] [2022-11-18 19:47:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:47:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:47:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:47:25,170 INFO L87 Difference]: Start difference. First operand 672 states and 986 transitions. Second operand has 19 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 5 states have call successors, (32), 2 states have call predecessors, (32), 7 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-18 19:47:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:26,107 INFO L93 Difference]: Finished difference Result 1084 states and 1578 transitions. [2022-11-18 19:47:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:47:26,107 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 5 states have call successors, (32), 2 states have call predecessors, (32), 7 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) Word has length 242 [2022-11-18 19:47:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:26,110 INFO L225 Difference]: With dead ends: 1084 [2022-11-18 19:47:26,110 INFO L226 Difference]: Without dead ends: 522 [2022-11-18 19:47:26,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:47:26,112 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 25 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:26,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4312 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:47:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-18 19:47:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2022-11-18 19:47:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 312 states have (on average 1.1217948717948718) internal successors, (350), 322 states have internal predecessors, (350), 145 states have call successors, (145), 46 states have call predecessors, (145), 55 states have return successors, (239), 144 states have call predecessors, (239), 144 states have call successors, (239) [2022-11-18 19:47:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 734 transitions. [2022-11-18 19:47:26,213 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 734 transitions. Word has length 242 [2022-11-18 19:47:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:26,213 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 734 transitions. [2022-11-18 19:47:26,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 5 states have call successors, (32), 2 states have call predecessors, (32), 7 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-18 19:47:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 734 transitions. [2022-11-18 19:47:26,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 19:47:26,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:26,218 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:26,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:26,431 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash -557882083, now seen corresponding path program 1 times [2022-11-18 19:47:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:26,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593305776] [2022-11-18 19:47:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:26,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:26,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206089135] [2022-11-18 19:47:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:26,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:26,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:26,532 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:26,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 19:47:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:27,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 184 conjunts are in the unsatisfiable core [2022-11-18 19:47:27,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:27,622 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:47:27,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 19:47:27,861 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 19:47:27,872 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 19:47:27,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-18 19:47:28,025 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 19:47:28,030 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 34 treesize of output 27 [2022-11-18 19:47:28,101 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-18 19:47:28,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-11-18 19:47:28,274 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5967 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5967) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5966 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5966) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 19:47:28,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:47:28,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-18 19:47:28,446 INFO L321 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-11-18 19:47:28,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 19:47:28,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:47:28,979 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5969 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5969) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5968 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_5968) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:47:28,990 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 17 treesize of output 19 [2022-11-18 19:47:28,999 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 19:47:29,104 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5972 Int) (v_ArrVal_5970 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5972))) (= |c_#memory_$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_5970))))) is different from true [2022-11-18 19:47:29,125 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5972 Int) (v_ArrVal_5970 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5972)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5970)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:47:29,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:47:29,183 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 19:47:29,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:47:29,188 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 19:47:29,809 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 19:47:40,108 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5975 Int)) (= |c_#memory_$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_5975)))) is different from true [2022-11-18 19:47:40,119 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5975 Int)) (= |c_#memory_$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|) 0 v_ArrVal_5975)))) is different from true [2022-11-18 19:47:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:47:40,143 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 19:47:50,303 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5976 Int)) (= |c_#memory_$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_5976)))) is different from true [2022-11-18 19:47:50,314 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5976 Int)) (= |c_#memory_$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|) 0 v_ArrVal_5976)))) is different from true [2022-11-18 19:47:50,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:47:50,335 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 19:48:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 66 proven. 191 refuted. 3 times theorem prover too weak. 146 trivial. 109 not checked. [2022-11-18 19:48:00,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:01,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593305776] [2022-11-18 19:48:01,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:48:01,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206089135] [2022-11-18 19:48:01,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206089135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:01,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:48:01,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-18 19:48:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852355391] [2022-11-18 19:48:01,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 19:48:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 19:48:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1335, Unknown=16, NotChecked=648, Total=2162 [2022-11-18 19:48:01,173 INFO L87 Difference]: Start difference. First operand 513 states and 734 transitions. Second operand has 41 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 39 states have internal predecessors, (120), 19 states have call successors, (35), 10 states have call predecessors, (35), 18 states have return successors, (35), 20 states have call predecessors, (35), 18 states have call successors, (35) [2022-11-18 19:48:12,408 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_5967 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5967))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_5966 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5966) |c_#memory_$Pointer$.offset|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5975 Int)) (= |c_#memory_$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|) 0 v_ArrVal_5975))))) is different from true [2022-11-18 19:48:12,412 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5976 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5976)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5972 Int) (v_ArrVal_5970 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5972)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5970)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-18 19:48:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:15,762 INFO L93 Difference]: Finished difference Result 652 states and 948 transitions. [2022-11-18 19:48:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 19:48:15,763 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 39 states have internal predecessors, (120), 19 states have call successors, (35), 10 states have call predecessors, (35), 18 states have return successors, (35), 20 states have call predecessors, (35), 18 states have call successors, (35) Word has length 242 [2022-11-18 19:48:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:15,765 INFO L225 Difference]: With dead ends: 652 [2022-11-18 19:48:15,765 INFO L226 Difference]: Without dead ends: 572 [2022-11-18 19:48:15,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 192 SyntacticMatches, 22 SemanticMatches, 66 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=345, Invalid=2958, Unknown=43, NotChecked=1210, Total=4556 [2022-11-18 19:48:15,768 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 293 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 4286 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 9113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4538 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:15,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2396 Invalid, 9113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 4286 Invalid, 0 Unknown, 4538 Unchecked, 3.4s Time] [2022-11-18 19:48:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-18 19:48:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 529. [2022-11-18 19:48:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 324 states have (on average 1.1296296296296295) internal successors, (366), 334 states have internal predecessors, (366), 147 states have call successors, (147), 48 states have call predecessors, (147), 57 states have return successors, (244), 146 states have call predecessors, (244), 146 states have call successors, (244) [2022-11-18 19:48:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 757 transitions. [2022-11-18 19:48:15,844 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 757 transitions. Word has length 242 [2022-11-18 19:48:15,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:15,845 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 757 transitions. [2022-11-18 19:48:15,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 39 states have internal predecessors, (120), 19 states have call successors, (35), 10 states have call predecessors, (35), 18 states have return successors, (35), 20 states have call predecessors, (35), 18 states have call successors, (35) [2022-11-18 19:48:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 757 transitions. [2022-11-18 19:48:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 19:48:15,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:15,849 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:15,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:16,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:16,064 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash 280816888, now seen corresponding path program 1 times [2022-11-18 19:48:16,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164860534] [2022-11-18 19:48:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:16,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:48:16,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219651359] [2022-11-18 19:48:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:16,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:16,146 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:16,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 19:48:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:17,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 19:48:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:17,261 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 19:48:17,341 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 19:48:17,481 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6203 Int)) (= |c_#memory_$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_6203)))) is different from true [2022-11-18 19:48:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-11-18 19:48:25,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:25,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164860534] [2022-11-18 19:48:25,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:48:25,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219651359] [2022-11-18 19:48:25,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219651359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:25,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:25,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 19:48:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982168372] [2022-11-18 19:48:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:48:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:48:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-11-18 19:48:25,725 INFO L87 Difference]: Start difference. First operand 529 states and 757 transitions. Second operand has 19 states, 17 states have (on average 5.176470588235294) internal successors, (88), 16 states have internal predecessors, (88), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-18 19:48:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:26,684 INFO L93 Difference]: Finished difference Result 850 states and 1201 transitions. [2022-11-18 19:48:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:48:26,684 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.176470588235294) internal successors, (88), 16 states have internal predecessors, (88), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 242 [2022-11-18 19:48:26,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:26,688 INFO L225 Difference]: With dead ends: 850 [2022-11-18 19:48:26,689 INFO L226 Difference]: Without dead ends: 537 [2022-11-18 19:48:26,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2022-11-18 19:48:26,691 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 103 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 895 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:26,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1117 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 884 Invalid, 0 Unknown, 895 Unchecked, 0.8s Time] [2022-11-18 19:48:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-18 19:48:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 529. [2022-11-18 19:48:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 324 states have (on average 1.1296296296296295) internal successors, (366), 334 states have internal predecessors, (366), 147 states have call successors, (147), 48 states have call predecessors, (147), 57 states have return successors, (242), 146 states have call predecessors, (242), 146 states have call successors, (242) [2022-11-18 19:48:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 755 transitions. [2022-11-18 19:48:26,766 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 755 transitions. Word has length 242 [2022-11-18 19:48:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:26,767 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 755 transitions. [2022-11-18 19:48:26,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.176470588235294) internal successors, (88), 16 states have internal predecessors, (88), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-18 19:48:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 755 transitions. [2022-11-18 19:48:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-18 19:48:26,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:26,771 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:26,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:26,990 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1585171987, now seen corresponding path program 2 times [2022-11-18 19:48:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:26,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596430820] [2022-11-18 19:48:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:27,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:48:27,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817508880] [2022-11-18 19:48:27,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:48:27,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:27,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:27,084 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:27,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 19:48:28,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:48:28,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:28,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-18 19:48:28,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:29,373 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6406 Int) (v_ArrVal_6404 Int) (v_ArrVal_6407 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6406)) |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6404)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6407) |c_#memory_int|))) is different from true [2022-11-18 19:48:29,404 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6406 Int) (v_ArrVal_6404 Int) (v_ArrVal_6407 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6404))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6406))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6407) |c_#memory_int|))) is different from true [2022-11-18 19:48:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:29,478 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 19:48:29,497 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:48:29,497 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 25 [2022-11-18 19:48:29,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:29,504 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 19:48:29,515 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 19:48:30,026 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6409 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6409) |c_#memory_int|)) (exists ((v_ArrVal_6413 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6413)))) (exists ((v_ArrVal_6412 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6412)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:48:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 206 proven. 13 refuted. 0 times theorem prover too weak. 267 trivial. 23 not checked. [2022-11-18 19:48:55,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:55,858 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6432 (Array Int Int)) (|v_aws_array_list_is_valid_~#required_size~0.base_177| Int) (v_ArrVal_6433 Int) (v_ArrVal_6431 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_array_list_is_valid_~#required_size~0.base_177| (store (select |c_#memory_$Pointer$.offset| |v_aws_array_list_is_valid_~#required_size~0.base_177|) 0 v_ArrVal_6431)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_177| v_ArrVal_6432) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 8)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_array_list_is_valid_~#required_size~0.base_177| (store (select |c_#memory_$Pointer$.base| |v_aws_array_list_is_valid_~#required_size~0.base_177|) 0 v_ArrVal_6433)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0))))) is different from false [2022-11-18 19:48:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:55,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596430820] [2022-11-18 19:48:55,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:48:55,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817508880] [2022-11-18 19:48:55,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817508880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:55,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:48:55,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-18 19:48:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932756692] [2022-11-18 19:48:55,861 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:55,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:48:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:48:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=831, Unknown=23, NotChecked=244, Total=1190 [2022-11-18 19:48:55,863 INFO L87 Difference]: Start difference. First operand 529 states and 755 transitions. Second operand has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 13 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (34), 13 states have call predecessors, (34), 12 states have call successors, (34) [2022-11-18 19:48:56,293 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6406 Int) (v_ArrVal_6404 Int) (v_ArrVal_6407 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6406)) |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6404)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6407) |c_#memory_int|))) (exists ((v_ArrVal_6409 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6409) |c_#memory_int|)) (exists ((v_ArrVal_6413 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6413)))) (exists ((v_ArrVal_6412 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6412)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:49:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:24,513 INFO L93 Difference]: Finished difference Result 701 states and 1072 transitions. [2022-11-18 19:49:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:49:24,513 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 13 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (34), 13 states have call predecessors, (34), 12 states have call successors, (34) Word has length 236 [2022-11-18 19:49:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:24,516 INFO L225 Difference]: With dead ends: 701 [2022-11-18 19:49:24,516 INFO L226 Difference]: Without dead ends: 626 [2022-11-18 19:49:24,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 208 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=162, Invalid=1549, Unknown=31, NotChecked=420, Total=2162 [2022-11-18 19:49:24,518 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 172 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 6825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3993 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:24,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2845 Invalid, 6825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2757 Invalid, 0 Unknown, 3993 Unchecked, 3.3s Time] [2022-11-18 19:49:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-11-18 19:49:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 549. [2022-11-18 19:49:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 337 states have (on average 1.1275964391691395) internal successors, (380), 346 states have internal predecessors, (380), 151 states have call successors, (151), 51 states have call predecessors, (151), 60 states have return successors, (249), 151 states have call predecessors, (249), 150 states have call successors, (249) [2022-11-18 19:49:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 780 transitions. [2022-11-18 19:49:24,585 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 780 transitions. Word has length 236 [2022-11-18 19:49:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:24,586 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 780 transitions. [2022-11-18 19:49:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 13 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (34), 13 states have call predecessors, (34), 12 states have call successors, (34) [2022-11-18 19:49:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 780 transitions. [2022-11-18 19:49:24,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 19:49:24,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:24,590 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:24,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:24,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:24,805 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1784790801, now seen corresponding path program 1 times [2022-11-18 19:49:24,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:24,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305967425] [2022-11-18 19:49:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:24,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:24,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:49:24,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922640061] [2022-11-18 19:49:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:24,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:24,881 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:24,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 19:49:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:25,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-18 19:49:25,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:26,025 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 19:49:26,107 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 19:49:26,240 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 19:49:26,245 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6622 Int)) (= |c_#memory_$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_6622)))) is different from true [2022-11-18 19:49:32,471 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6622 Int)) (= |c_#memory_$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|) 0 v_ArrVal_6622))))) is different from true [2022-11-18 19:49:32,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:32,497 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 19:49:53,641 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6625 Int) (v_ArrVal_6627 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6627) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6625)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:49:53,663 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6625 Int) (v_ArrVal_6627 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6625)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6627) |c_#memory_int|))) is different from true [2022-11-18 19:49:53,722 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 20 treesize of output 19 [2022-11-18 19:49:53,739 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:49:53,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-18 19:49:58,122 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6628 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6629 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6629) |c_#memory_int|) (= |c_#memory_$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_6628))))) is different from true [2022-11-18 19:50:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 342 proven. 24 refuted. 0 times theorem prover too weak. 121 trivial. 28 not checked. [2022-11-18 19:50:28,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:29,144 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6642 (Array Int Int)) (v_ArrVal_6643 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_360| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_360| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_360|) 0 v_ArrVal_6643)) |c_ULTIMATE.start_aws_array_list_copy_~to#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_copy_~to#1.offset|)) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_360| v_ArrVal_6642) |c_ULTIMATE.start_aws_array_list_copy_~to#1.base|) (+ 8 |c_ULTIMATE.start_aws_array_list_copy_~to#1.offset|)) 18446744073709551616) 0)))) is different from false [2022-11-18 19:50:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305967425] [2022-11-18 19:50:29,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922640061] [2022-11-18 19:50:29,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922640061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:29,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:50:29,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-18 19:50:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133744155] [2022-11-18 19:50:29,147 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:50:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:50:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=850, Unknown=40, NotChecked=390, Total=1406 [2022-11-18 19:50:29,149 INFO L87 Difference]: Start difference. First operand 549 states and 780 transitions. Second operand has 37 states, 33 states have (on average 3.696969696969697) internal successors, (122), 32 states have internal predecessors, (122), 14 states have call successors, (36), 7 states have call predecessors, (36), 13 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-18 19:50:29,661 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6625 Int) (v_ArrVal_6627 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6627) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6625)) |c_#memory_$Pointer$.base|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6622 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6622)))) (exists ((v_ArrVal_6628 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6629 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6629) |c_#memory_int|) (= |c_#memory_$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_6628)))))) is different from true [2022-11-18 19:50:47,883 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6622 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6622)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6625 Int) (v_ArrVal_6627 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6625)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6627) |c_#memory_int|)))) is different from true [2022-11-18 19:51:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:13,755 INFO L93 Difference]: Finished difference Result 791 states and 1136 transitions. [2022-11-18 19:51:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:51:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 3.696969696969697) internal successors, (122), 32 states have internal predecessors, (122), 14 states have call successors, (36), 7 states have call predecessors, (36), 13 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 242 [2022-11-18 19:51:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:13,761 INFO L225 Difference]: With dead ends: 791 [2022-11-18 19:51:13,761 INFO L226 Difference]: Without dead ends: 566 [2022-11-18 19:51:13,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 255 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 104.7s TimeCoverageRelationStatistics Valid=207, Invalid=1488, Unknown=59, NotChecked=696, Total=2450 [2022-11-18 19:51:13,764 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 134 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3167 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:13,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1887 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2137 Invalid, 0 Unknown, 3167 Unchecked, 1.7s Time] [2022-11-18 19:51:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-18 19:51:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 558. [2022-11-18 19:51:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 342 states have (on average 1.1257309941520468) internal successors, (385), 351 states have internal predecessors, (385), 154 states have call successors, (154), 52 states have call predecessors, (154), 61 states have return successors, (254), 154 states have call predecessors, (254), 153 states have call successors, (254) [2022-11-18 19:51:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 793 transitions. [2022-11-18 19:51:13,869 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 793 transitions. Word has length 242 [2022-11-18 19:51:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:13,870 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 793 transitions. [2022-11-18 19:51:13,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 3.696969696969697) internal successors, (122), 32 states have internal predecessors, (122), 14 states have call successors, (36), 7 states have call predecessors, (36), 13 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-18 19:51:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 793 transitions. [2022-11-18 19:51:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-18 19:51:13,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:13,874 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:13,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:14,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 19:51:14,090 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 367072839, now seen corresponding path program 1 times [2022-11-18 19:51:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:14,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115307910] [2022-11-18 19:51:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:14,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:14,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513010453] [2022-11-18 19:51:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:14,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:14,165 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:14,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 19:51:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:15,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-18 19:51:15,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:15,300 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 19:51:15,381 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 19:51:15,508 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 19:51:15,513 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6850 Int)) (= |c_#memory_$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_6850)))) is different from true [2022-11-18 19:51:21,740 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6850 Int)) (= |c_#memory_$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|) 0 v_ArrVal_6850))))) is different from true [2022-11-18 19:51:21,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:21,764 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 19:51:42,895 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6851 (Array Int Int)) (v_ArrVal_6852 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6851) |c_#memory_int|) (= |c_#memory_$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_6852))))) is different from true [2022-11-18 19:51:42,914 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6851 (Array Int Int)) (v_ArrVal_6852 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6851) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6852)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 19:51:42,974 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:51:42,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-18 19:51:42,980 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 20 treesize of output 19 [2022-11-18 19:51:47,361 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6854 Int) (v_ArrVal_6855 (Array Int Int))) (and (= |c_#memory_$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_6854))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6855) |c_#memory_int|))) is different from true [2022-11-18 19:52:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 342 proven. 24 refuted. 0 times theorem prover too weak. 115 trivial. 28 not checked. [2022-11-18 19:52:18,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:18,425 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6869 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_375| Int) (v_ArrVal_6868 (Array Int Int))) (or (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_375| v_ArrVal_6868) |c_ULTIMATE.start_aws_array_list_copy_~to#1.base|) (+ 8 |c_ULTIMATE.start_aws_array_list_copy_~to#1.offset|)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_375| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_375|) 0 v_ArrVal_6869)) |c_ULTIMATE.start_aws_array_list_copy_~to#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_copy_~to#1.offset|)) 0)))) is different from false [2022-11-18 19:52:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:18,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115307910] [2022-11-18 19:52:18,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:18,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513010453] [2022-11-18 19:52:18,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513010453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:18,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:52:18,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-18 19:52:18,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56590441] [2022-11-18 19:52:18,428 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:18,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:52:18,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:52:18,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=850, Unknown=40, NotChecked=390, Total=1406 [2022-11-18 19:52:18,430 INFO L87 Difference]: Start difference. First operand 558 states and 793 transitions. Second operand has 37 states, 33 states have (on average 3.727272727272727) internal successors, (123), 32 states have internal predecessors, (123), 14 states have call successors, (36), 7 states have call predecessors, (36), 13 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-18 19:52:18,998 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6850 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6850)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6854 Int) (v_ArrVal_6855 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6854))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6855) |c_#memory_int|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6851 (Array Int Int)) (v_ArrVal_6852 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6851) |c_#memory_int|) (= |c_#memory_$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_6852)))))) is different from true [2022-11-18 19:53:01,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:01,040 INFO L93 Difference]: Finished difference Result 794 states and 1143 transitions. [2022-11-18 19:53:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:53:01,041 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 3.727272727272727) internal successors, (123), 32 states have internal predecessors, (123), 14 states have call successors, (36), 7 states have call predecessors, (36), 13 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 236 [2022-11-18 19:53:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:01,045 INFO L225 Difference]: With dead ends: 794 [2022-11-18 19:53:01,045 INFO L226 Difference]: Without dead ends: 573 [2022-11-18 19:53:01,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 241 SyntacticMatches, 15 SemanticMatches, 46 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 102.6s TimeCoverageRelationStatistics Valid=198, Invalid=1418, Unknown=52, NotChecked=588, Total=2256 [2022-11-18 19:53:01,047 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 146 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 5073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2781 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:01,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1761 Invalid, 5073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2206 Invalid, 0 Unknown, 2781 Unchecked, 1.8s Time] [2022-11-18 19:53:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-18 19:53:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 558. [2022-11-18 19:53:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 342 states have (on average 1.1257309941520468) internal successors, (385), 351 states have internal predecessors, (385), 154 states have call successors, (154), 52 states have call predecessors, (154), 61 states have return successors, (254), 154 states have call predecessors, (254), 153 states have call successors, (254) [2022-11-18 19:53:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 793 transitions. [2022-11-18 19:53:01,130 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 793 transitions. Word has length 236 [2022-11-18 19:53:01,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:01,131 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 793 transitions. [2022-11-18 19:53:01,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 3.727272727272727) internal successors, (123), 32 states have internal predecessors, (123), 14 states have call successors, (36), 7 states have call predecessors, (36), 13 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-18 19:53:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 793 transitions. [2022-11-18 19:53:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 19:53:01,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:01,135 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 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] [2022-11-18 19:53:01,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 19:53:01,349 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1304532561, now seen corresponding path program 2 times [2022-11-18 19:53:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:01,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58092032] [2022-11-18 19:53:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:01,415 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:01,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009385627] [2022-11-18 19:53:01,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:01,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:01,417 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:01,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 19:53:03,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:03,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:03,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-18 19:53:03,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:03,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:53:03,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-18 19:53:04,075 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 19:53:04,077 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 19:53:04,098 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7057 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_7057) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_7058 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_7058)))) is different from true [2022-11-18 19:53:04,109 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 19:53:04,117 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 19:53:04,241 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7062 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7061 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7061)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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_7062))))) is different from true [2022-11-18 19:53:04,262 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7062 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7061 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7061))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7062)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 19:53:04,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:04,316 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 19:53:04,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:04,320 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 19:53:04,871 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 19:53:04,875 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 19:53:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 293 proven. 46 refuted. 0 times theorem prover too weak. 169 trivial. 7 not checked. [2022-11-18 19:53:04,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:05,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:05,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58092032] [2022-11-18 19:53:05,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:05,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009385627] [2022-11-18 19:53:05,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009385627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:05,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:05,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 19:53:05,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873678028] [2022-11-18 19:53:05,974 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:05,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:53:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:53:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=967, Unknown=7, NotChecked=192, Total=1260 [2022-11-18 19:53:05,976 INFO L87 Difference]: Start difference. First operand 558 states and 793 transitions. Second operand has 27 states, 23 states have (on average 4.521739130434782) internal successors, (104), 26 states have internal predecessors, (104), 13 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-18 19:53:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:11,414 INFO L93 Difference]: Finished difference Result 939 states and 1456 transitions. [2022-11-18 19:53:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:53:11,414 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.521739130434782) internal successors, (104), 26 states have internal predecessors, (104), 13 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) Word has length 242 [2022-11-18 19:53:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:11,420 INFO L225 Difference]: With dead ends: 939 [2022-11-18 19:53:11,420 INFO L226 Difference]: Without dead ends: 683 [2022-11-18 19:53:11,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 328 SyntacticMatches, 13 SemanticMatches, 51 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=196, Invalid=2255, Unknown=11, NotChecked=294, Total=2756 [2022-11-18 19:53:11,422 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 155 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 3664 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 6236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2467 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:11,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 2347 Invalid, 6236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3664 Invalid, 0 Unknown, 2467 Unchecked, 3.7s Time] [2022-11-18 19:53:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-18 19:53:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 559. [2022-11-18 19:53:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 342 states have (on average 1.1257309941520468) internal successors, (385), 351 states have internal predecessors, (385), 155 states have call successors, (155), 52 states have call predecessors, (155), 61 states have return successors, (255), 155 states have call predecessors, (255), 154 states have call successors, (255) [2022-11-18 19:53:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 795 transitions. [2022-11-18 19:53:11,484 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 795 transitions. Word has length 242 [2022-11-18 19:53:11,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:11,485 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 795 transitions. [2022-11-18 19:53:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.521739130434782) internal successors, (104), 26 states have internal predecessors, (104), 13 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-18 19:53:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 795 transitions. [2022-11-18 19:53:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-18 19:53:11,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:11,489 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:11,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:11,702 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1734201037, now seen corresponding path program 3 times [2022-11-18 19:53:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:11,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384563298] [2022-11-18 19:53:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:11,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:11,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:11,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397951784] [2022-11-18 19:53:11,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:53:11,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:11,782 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:11,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aea7347-7ef0-4cb2-adbf-3f4fbfa51dfc/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process