./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R --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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- 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-38b53e6 [2022-11-25 16:51:06,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:51:06,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:51:06,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:51:06,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:51:06,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:51:06,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:51:06,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:51:06,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:51:06,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:51:06,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:51:06,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:51:06,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:51:06,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:51:06,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:51:06,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:51:06,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:51:06,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:51:06,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:51:06,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:51:06,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:51:06,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:51:06,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:51:06,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:51:06,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:51:06,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:51:06,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:51:06,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:51:06,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:51:06,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:51:06,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:51:06,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:51:06,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:51:06,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:51:06,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:51:06,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:51:06,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:51:06,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:51:06,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:51:06,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:51:06,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:51:06,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 16:51:06,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:51:06,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:51:06,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:51:06,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:51:06,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:51:06,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:51:06,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:51:06,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:51:06,181 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:51:06,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:51:06,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:51:06,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:51:06,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:51:06,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:51:06,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:51:06,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:51:06,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:51:06,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:51:06,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:51:06,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:51:06,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:51:06,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:51:06,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:51:06,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:51:06,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:51:06,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:51:06,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:51:06,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:51:06,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:51:06,187 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:51:06,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:51:06,188 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2022-11-25 16:51:06,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:51:06,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:51:06,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:51:06,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:51:06,530 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:51:06,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2022-11-25 16:51:09,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:51:10,764 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:51:10,765 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2022-11-25 16:51:10,810 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/data/2f8714d9b/34e78cea2e55476cb802d072e24ad5a3/FLAG5be48af14 [2022-11-25 16:51:10,829 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/data/2f8714d9b/34e78cea2e55476cb802d072e24ad5a3 [2022-11-25 16:51:10,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:51:10,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:51:10,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:51:10,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:51:10,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:51:10,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:51:10" (1/1) ... [2022-11-25 16:51:10,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54441e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:10, skipping insertion in model container [2022-11-25 16:51:10,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:51:10" (1/1) ... [2022-11-25 16:51:10,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:51:11,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:51:11,461 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2022-11-25 16:51:11,475 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2022-11-25 16:51:12,991 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:12,992 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:12,993 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:12,994 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:12,995 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,010 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,012 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,014 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,016 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,021 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,023 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,031 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,031 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:13,158 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 16:51:13,159 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 16:51:13,161 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 16:51:13,182 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 16:51:13,187 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 16:51:13,188 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 16:51:13,617 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 16:51:13,618 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 16:51:13,620 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 16:51:13,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 16:51:13,622 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 16:51:13,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 16:51:13,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 16:51:13,638 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 16:51:13,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 16:51:13,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 16:51:13,641 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 16:51:13,888 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 16:51:14,034 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 16:51:14,419 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,420 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,462 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,466 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,474 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,475 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,500 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,506 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,507 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,508 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,508 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,509 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,509 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:51:14,639 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:51:14,664 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2022-11-25 16:51:14,665 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2022-11-25 16:51:14,778 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,778 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,779 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,779 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,779 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,793 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,795 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,797 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,798 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,802 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,803 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,803 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,804 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:14,810 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 16:51:14,810 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 16:51:14,811 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 16:51:14,817 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 16:51:14,818 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 16:51:14,820 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 16:51:14,844 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 16:51:14,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 16:51:14,846 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 16:51:14,848 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 16:51:14,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 16:51:14,850 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 16:51:14,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 16:51:14,852 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 16:51:14,853 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 16:51:14,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 16:51:14,858 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 16:51:14,887 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 16:51:14,933 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 16:51:15,003 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,003 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,011 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,012 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,015 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,015 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,030 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,030 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,032 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,032 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,033 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,033 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,033 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 16:51:15,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:51:15,345 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:51:15,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15 WrapperNode [2022-11-25 16:51:15,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:51:15,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:51:15,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:51:15,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:51:15,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,549 INFO L138 Inliner]: procedures = 774, calls = 2454, calls flagged for inlining = 68, calls inlined = 18, statements flattened = 944 [2022-11-25 16:51:15,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:51:15,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:51:15,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:51:15,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:51:15,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:51:15,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:51:15,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:51:15,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:51:15,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (1/1) ... [2022-11-25 16:51:15,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:51:15,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:15,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:51:15,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:51:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-25 16:51:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2022-11-25 16:51:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2022-11-25 16:51:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:51:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-25 16:51:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-25 16:51:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 16:51:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 16:51:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-25 16:51:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-25 16:51:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:51:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:51:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:51:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:51:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:51:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 16:51:15,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 16:51:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-25 16:51:15,755 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-25 16:51:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:51:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-25 16:51:15,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-25 16:51:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 16:51:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 16:51:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 16:51:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:51:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2022-11-25 16:51:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2022-11-25 16:51:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-25 16:51:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-25 16:51:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2022-11-25 16:51:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2022-11-25 16:51:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-11-25 16:51:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-11-25 16:51:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:51:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2022-11-25 16:51:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2022-11-25 16:51:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-25 16:51:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-25 16:51:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-11-25 16:51:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-11-25 16:51:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2022-11-25 16:51:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2022-11-25 16:51:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2022-11-25 16:51:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2022-11-25 16:51:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 16:51:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 16:51:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-25 16:51:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-25 16:51:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 16:51:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2022-11-25 16:51:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2022-11-25 16:51:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-25 16:51:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-25 16:51:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-25 16:51:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-25 16:51:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2022-11-25 16:51:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2022-11-25 16:51:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-25 16:51:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-25 16:51:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:51:16,369 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:51:16,372 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:51:16,555 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2022-11-25 16:51:16,640 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2022-11-25 16:51:17,810 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2022-11-25 16:51:17,810 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2022-11-25 16:51:17,810 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2022-11-25 16:51:17,811 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2022-11-25 16:51:17,811 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2022-11-25 16:51:17,863 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:51:17,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:51:17,887 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 16:51:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:51:17 BoogieIcfgContainer [2022-11-25 16:51:17,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:51:17,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:51:17,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:51:17,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:51:17,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:51:10" (1/3) ... [2022-11-25 16:51:17,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7b23b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:51:17, skipping insertion in model container [2022-11-25 16:51:17,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:15" (2/3) ... [2022-11-25 16:51:17,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7b23b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:51:17, skipping insertion in model container [2022-11-25 16:51:17,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:51:17" (3/3) ... [2022-11-25 16:51:17,909 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2022-11-25 16:51:17,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:51:17,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:51:18,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:51:18,042 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;@78fbc435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:51:18,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:51:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 177 states have internal predecessors, (223), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-25 16:51:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-25 16:51:18,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:51:18,102 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:51:18,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:51:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2061328642, now seen corresponding path program 1 times [2022-11-25 16:51:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440622646] [2022-11-25 16:51:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:19,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440622646] [2022-11-25 16:51:19,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 16:51:19,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620624127] [2022-11-25 16:51:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:19,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:19,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:19,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:51:19,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:51:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:20,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 16:51:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:51:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-11-25 16:51:20,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:51:20,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620624127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:20,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:20,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:51:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086192065] [2022-11-25 16:51:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:20,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:51:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:51:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:51:20,435 INFO L87 Difference]: Start difference. First operand has 291 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 177 states have internal predecessors, (223), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-25 16:51:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:51:20,580 INFO L93 Difference]: Finished difference Result 578 states and 846 transitions. [2022-11-25 16:51:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:51:20,583 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 289 [2022-11-25 16:51:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:51:20,606 INFO L225 Difference]: With dead ends: 578 [2022-11-25 16:51:20,606 INFO L226 Difference]: Without dead ends: 285 [2022-11-25 16:51:20,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:51:20,634 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:51:20,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:51:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-25 16:51:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-25 16:51:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 171 states have (on average 1.2046783625730995) internal successors, (206), 172 states have internal predecessors, (206), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-25 16:51:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 383 transitions. [2022-11-25 16:51:20,732 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 383 transitions. Word has length 289 [2022-11-25 16:51:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:51:20,733 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 383 transitions. [2022-11-25 16:51:20,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-25 16:51:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 383 transitions. [2022-11-25 16:51:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-25 16:51:20,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:51:20,741 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:51:20,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:51:20,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 16:51:20,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:51:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 570048816, now seen corresponding path program 1 times [2022-11-25 16:51:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:20,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543511020] [2022-11-25 16:51:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:21,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:51:21,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445654890] [2022-11-25 16:51:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:21,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:21,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:21,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:51:21,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:51:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:22,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:51:22,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:51:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2022-11-25 16:51:22,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:51:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:22,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543511020] [2022-11-25 16:51:22,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:51:22,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445654890] [2022-11-25 16:51:22,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445654890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:22,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:22,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:51:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403490022] [2022-11-25 16:51:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:22,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:51:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:51:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:51:22,246 INFO L87 Difference]: Start difference. First operand 285 states and 383 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-25 16:51:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:51:22,327 INFO L93 Difference]: Finished difference Result 572 states and 774 transitions. [2022-11-25 16:51:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:51:22,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 289 [2022-11-25 16:51:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:51:22,331 INFO L225 Difference]: With dead ends: 572 [2022-11-25 16:51:22,331 INFO L226 Difference]: Without dead ends: 290 [2022-11-25 16:51:22,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:51:22,364 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 2 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:51:22,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1515 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:51:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-25 16:51:22,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2022-11-25 16:51:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 175 states have (on average 1.2) internal successors, (210), 176 states have internal predecessors, (210), 89 states have call successors, (89), 24 states have call predecessors, (89), 25 states have return successors, (89), 89 states have call predecessors, (89), 88 states have call successors, (89) [2022-11-25 16:51:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 388 transitions. [2022-11-25 16:51:22,396 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 388 transitions. Word has length 289 [2022-11-25 16:51:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:51:22,398 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 388 transitions. [2022-11-25 16:51:22,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-25 16:51:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 388 transitions. [2022-11-25 16:51:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-25 16:51:22,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:51:22,406 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:51:22,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:51:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:22,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:51:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1767494924, now seen corresponding path program 1 times [2022-11-25 16:51:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:22,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039008120] [2022-11-25 16:51:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:51:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:51:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:51:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:51:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:51:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:51:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:51:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 16:51:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 16:51:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:51:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 16:51:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:51:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:51:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:51:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:51:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:51:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-25 16:51:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 16:51:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 16:51:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:51:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-25 16:51:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-11-25 16:51:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-11-25 16:51:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 16:51:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 16:51:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 16:51:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-11-25 16:51:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 16:51:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 16:51:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 16:51:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-11-25 16:51:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-11-25 16:51:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-11-25 16:51:27,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:27,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039008120] [2022-11-25 16:51:27,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039008120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:51:27,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554207910] [2022-11-25 16:51:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:27,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:27,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:51:27,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:51:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:28,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:51:28,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:51:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-11-25 16:51:28,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:51:28,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554207910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:28,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:51:28,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-11-25 16:51:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881723960] [2022-11-25 16:51:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:28,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:51:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:51:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-11-25 16:51:28,327 INFO L87 Difference]: Start difference. First operand 290 states and 388 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-25 16:51:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:51:28,666 INFO L93 Difference]: Finished difference Result 579 states and 790 transitions. [2022-11-25 16:51:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:51:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 313 [2022-11-25 16:51:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:51:28,674 INFO L225 Difference]: With dead ends: 579 [2022-11-25 16:51:28,674 INFO L226 Difference]: Without dead ends: 293 [2022-11-25 16:51:28,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:51:28,680 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:51:28,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2095 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 16:51:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-25 16:51:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2022-11-25 16:51:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 177 states have (on average 1.1977401129943503) internal successors, (212), 179 states have internal predecessors, (212), 89 states have call successors, (89), 24 states have call predecessors, (89), 26 states have return successors, (106), 89 states have call predecessors, (106), 88 states have call successors, (106) [2022-11-25 16:51:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 407 transitions. [2022-11-25 16:51:28,743 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 407 transitions. Word has length 313 [2022-11-25 16:51:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:51:28,744 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 407 transitions. [2022-11-25 16:51:28,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-25 16:51:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 407 transitions. [2022-11-25 16:51:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-25 16:51:28,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:51:28,754 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:51:28,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:51:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:28,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:51:28,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1247292233, now seen corresponding path program 1 times [2022-11-25 16:51:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:28,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964539504] [2022-11-25 16:51:28,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:51:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:51:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:51:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:51:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:51:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:51:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:51:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:51:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 16:51:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 16:51:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:51:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 16:51:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:51:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:51:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:51:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:51:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:51:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-25 16:51:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 16:51:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-25 16:51:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:51:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:51:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:51:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-11-25 16:51:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-11-25 16:51:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-25 16:51:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 16:51:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-25 16:51:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-11-25 16:51:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-11-25 16:51:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 16:51:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-11-25 16:51:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-11-25 16:51:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-25 16:51:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-11-25 16:51:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2022-11-25 16:51:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964539504] [2022-11-25 16:51:31,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964539504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:51:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676854567] [2022-11-25 16:51:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:31,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:31,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:51:31,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:51:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:32,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 3385 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 16:51:32,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:51:35,014 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-11-25 16:51:43,134 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 16:51:51,216 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 16:51:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-25 16:51:51,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:51:51,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676854567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:51,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:51:51,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-25 16:51:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965269156] [2022-11-25 16:51:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:51,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:51:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:51:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2022-11-25 16:51:51,273 INFO L87 Difference]: Start difference. First operand 293 states and 407 transitions. Second operand has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (45), 2 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-25 16:51:54,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:52:00,875 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 16:52:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:52:01,463 INFO L93 Difference]: Finished difference Result 596 states and 843 transitions. [2022-11-25 16:52:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:52:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (45), 2 states have call predecessors, (45), 3 states have call successors, (45) Word has length 319 [2022-11-25 16:52:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:52:01,466 INFO L225 Difference]: With dead ends: 596 [2022-11-25 16:52:01,467 INFO L226 Difference]: Without dead ends: 305 [2022-11-25 16:52:01,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=64, Invalid=279, Unknown=3, NotChecked=34, Total=380 [2022-11-25 16:52:01,469 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 12 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:52:01,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2094 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 221 Invalid, 1 Unknown, 399 Unchecked, 3.8s Time] [2022-11-25 16:52:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-25 16:52:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2022-11-25 16:52:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 186 states have internal predecessors, (219), 91 states have call successors, (91), 25 states have call predecessors, (91), 27 states have return successors, (108), 90 states have call predecessors, (108), 90 states have call successors, (108) [2022-11-25 16:52:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 418 transitions. [2022-11-25 16:52:01,499 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 418 transitions. Word has length 319 [2022-11-25 16:52:01,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:52:01,502 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 418 transitions. [2022-11-25 16:52:01,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (45), 2 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-25 16:52:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 418 transitions. [2022-11-25 16:52:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-25 16:52:01,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:52:01,509 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:52:01,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:01,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:01,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:52:01,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash -563331527, now seen corresponding path program 1 times [2022-11-25 16:52:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:01,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820760792] [2022-11-25 16:52:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:01,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:52:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 16:52:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 16:52:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 16:52:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-25 16:52:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 16:52:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-25 16:52:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-11-25 16:52:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-11-25 16:52:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-25 16:52:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 16:52:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-25 16:52:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-11-25 16:52:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-11-25 16:52:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 16:52:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-11-25 16:52:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-11-25 16:52:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-25 16:52:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-11-25 16:52:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2022-11-25 16:52:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:03,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820760792] [2022-11-25 16:52:03,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820760792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:03,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339738265] [2022-11-25 16:52:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:03,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:03,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:03,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:03,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:52:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:03,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:52:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-25 16:52:04,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:52:04,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339738265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:04,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:52:04,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-25 16:52:04,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309817235] [2022-11-25 16:52:04,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:04,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:52:04,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:04,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:52:04,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:52:04,023 INFO L87 Difference]: Start difference. First operand 302 states and 418 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-25 16:52:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:52:04,064 INFO L93 Difference]: Finished difference Result 600 states and 847 transitions. [2022-11-25 16:52:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:52:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 319 [2022-11-25 16:52:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:52:04,067 INFO L225 Difference]: With dead ends: 600 [2022-11-25 16:52:04,068 INFO L226 Difference]: Without dead ends: 302 [2022-11-25 16:52:04,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:52:04,070 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:52:04,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1138 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:52:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-25 16:52:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2022-11-25 16:52:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 183 states have (on average 1.1912568306010929) internal successors, (218), 185 states have internal predecessors, (218), 90 states have call successors, (90), 25 states have call predecessors, (90), 27 states have return successors, (107), 90 states have call predecessors, (107), 89 states have call successors, (107) [2022-11-25 16:52:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 415 transitions. [2022-11-25 16:52:04,116 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 415 transitions. Word has length 319 [2022-11-25 16:52:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:52:04,117 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 415 transitions. [2022-11-25 16:52:04,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-25 16:52:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 415 transitions. [2022-11-25 16:52:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-25 16:52:04,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:52:04,125 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:52:04,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:04,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:04,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:52:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:04,337 INFO L85 PathProgramCache]: Analyzing trace with hash -95380146, now seen corresponding path program 1 times [2022-11-25 16:52:04,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:04,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848033629] [2022-11-25 16:52:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:04,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:52:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:52:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:52:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 16:52:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 16:52:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-25 16:52:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-25 16:52:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 16:52:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 16:52:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-25 16:52:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-25 16:52:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-11-25 16:52:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-11-25 16:52:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-25 16:52:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 16:52:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-11-25 16:52:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-25 16:52:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-11-25 16:52:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-11-25 16:52:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2022-11-25 16:52:07,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:07,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848033629] [2022-11-25 16:52:07,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848033629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:07,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091084251] [2022-11-25 16:52:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:07,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:07,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:52:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:08,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 3415 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:52:08,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-11-25 16:52:08,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:52:08,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091084251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:08,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:52:08,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-11-25 16:52:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277325230] [2022-11-25 16:52:08,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:08,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:52:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:52:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-11-25 16:52:08,527 INFO L87 Difference]: Start difference. First operand 301 states and 415 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-25 16:52:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:52:08,797 INFO L93 Difference]: Finished difference Result 569 states and 785 transitions. [2022-11-25 16:52:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:52:08,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 324 [2022-11-25 16:52:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:52:08,804 INFO L225 Difference]: With dead ends: 569 [2022-11-25 16:52:08,804 INFO L226 Difference]: Without dead ends: 301 [2022-11-25 16:52:08,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:52:08,811 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:52:08,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2096 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:52:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-25 16:52:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-25 16:52:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 183 states have (on average 1.1912568306010929) internal successors, (218), 185 states have internal predecessors, (218), 90 states have call successors, (90), 25 states have call predecessors, (90), 27 states have return successors, (106), 90 states have call predecessors, (106), 89 states have call successors, (106) [2022-11-25 16:52:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 414 transitions. [2022-11-25 16:52:08,847 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 414 transitions. Word has length 324 [2022-11-25 16:52:08,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:52:08,849 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 414 transitions. [2022-11-25 16:52:08,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-25 16:52:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 414 transitions. [2022-11-25 16:52:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-25 16:52:08,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:52:08,852 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:52:08,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:09,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 16:52:09,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:52:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1302423526, now seen corresponding path program 2 times [2022-11-25 16:52:09,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:09,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53553317] [2022-11-25 16:52:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:52:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:52:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:52:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 16:52:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 16:52:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-25 16:52:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 16:52:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 16:52:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-11-25 16:52:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 16:52:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-25 16:52:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 16:52:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-11-25 16:52:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-25 16:52:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-25 16:52:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-11-25 16:52:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-11-25 16:52:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-11-25 16:52:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-11-25 16:52:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 78 proven. 18 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-11-25 16:52:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:15,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53553317] [2022-11-25 16:52:15,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53553317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:15,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713875476] [2022-11-25 16:52:15,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:52:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:15,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:15,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:52:16,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:52:16,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:52:16,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 3469 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:52:16,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-11-25 16:52:16,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:52:16,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713875476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:16,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:52:16,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-11-25 16:52:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073575078] [2022-11-25 16:52:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:16,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:52:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:52:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2022-11-25 16:52:16,661 INFO L87 Difference]: Start difference. First operand 301 states and 414 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 16:52:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:52:16,936 INFO L93 Difference]: Finished difference Result 513 states and 717 transitions. [2022-11-25 16:52:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:52:16,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 335 [2022-11-25 16:52:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:52:16,941 INFO L225 Difference]: With dead ends: 513 [2022-11-25 16:52:16,942 INFO L226 Difference]: Without dead ends: 301 [2022-11-25 16:52:16,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-11-25 16:52:16,945 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:52:16,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2097 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:52:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-25 16:52:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-25 16:52:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 183 states have (on average 1.1912568306010929) internal successors, (218), 185 states have internal predecessors, (218), 90 states have call successors, (90), 25 states have call predecessors, (90), 27 states have return successors, (105), 90 states have call predecessors, (105), 89 states have call successors, (105) [2022-11-25 16:52:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 413 transitions. [2022-11-25 16:52:16,970 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 413 transitions. Word has length 335 [2022-11-25 16:52:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:52:16,971 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 413 transitions. [2022-11-25 16:52:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 16:52:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 413 transitions. [2022-11-25 16:52:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-25 16:52:16,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:52:16,976 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2022-11-25 16:52:16,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:17,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:17,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:52:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2028059318, now seen corresponding path program 3 times [2022-11-25 16:52:17,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:17,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709667446] [2022-11-25 16:52:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:52:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:52:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:52:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 16:52:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 16:52:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-25 16:52:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 16:52:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 16:52:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 16:52:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-11-25 16:52:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 16:52:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 16:52:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-11-25 16:52:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-11-25 16:52:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-11-25 16:52:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-25 16:52:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-25 16:52:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-11-25 16:52:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-25 16:52:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 34 proven. 35 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2022-11-25 16:52:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709667446] [2022-11-25 16:52:20,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709667446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381340164] [2022-11-25 16:52:20,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:52:20,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:20,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:20,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:20,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 16:52:22,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 16:52:22,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:52:22,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:52:22,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2022-11-25 16:52:22,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:52:22,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381340164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:22,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:52:22,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-11-25 16:52:22,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429217383] [2022-11-25 16:52:22,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:22,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:52:22,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:52:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-11-25 16:52:22,342 INFO L87 Difference]: Start difference. First operand 301 states and 413 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 16:52:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:52:22,565 INFO L93 Difference]: Finished difference Result 504 states and 698 transitions. [2022-11-25 16:52:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:52:22,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 346 [2022-11-25 16:52:22,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:52:22,568 INFO L225 Difference]: With dead ends: 504 [2022-11-25 16:52:22,568 INFO L226 Difference]: Without dead ends: 301 [2022-11-25 16:52:22,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:52:22,570 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:52:22,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2098 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:52:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-25 16:52:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-25 16:52:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 183 states have (on average 1.1912568306010929) internal successors, (218), 185 states have internal predecessors, (218), 90 states have call successors, (90), 25 states have call predecessors, (90), 27 states have return successors, (104), 90 states have call predecessors, (104), 89 states have call successors, (104) [2022-11-25 16:52:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 412 transitions. [2022-11-25 16:52:22,590 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 412 transitions. Word has length 346 [2022-11-25 16:52:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:52:22,592 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 412 transitions. [2022-11-25 16:52:22,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 16:52:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 412 transitions. [2022-11-25 16:52:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-25 16:52:22,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:52:22,596 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:52:22,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:22,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:52:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1348902418, now seen corresponding path program 4 times [2022-11-25 16:52:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497440720] [2022-11-25 16:52:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:52:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:52:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:52:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 16:52:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:52:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:52:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:52:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:52:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:52:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 16:52:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-25 16:52:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 16:52:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:52:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:52:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:52:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 16:52:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 16:52:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-11-25 16:52:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 16:52:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 16:52:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-11-25 16:52:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-11-25 16:52:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:52:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:52:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-25 16:52:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-11-25 16:52:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-11-25 16:52:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-11-25 16:52:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-11-25 16:52:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 34 proven. 37 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-11-25 16:52:26,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:26,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497440720] [2022-11-25 16:52:26,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497440720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:26,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422539382] [2022-11-25 16:52:26,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:52:26,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:26,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:26,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:26,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 16:52:27,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:52:27,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:52:27,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 16:52:27,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:29,680 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0)))) is different from true [2022-11-25 16:52:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 452 proven. 9 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-11-25 16:52:30,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:52:31,397 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-25 16:52:31,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-25 16:52:31,411 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-25 16:52:31,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2022-11-25 16:52:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 34 proven. 38 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-11-25 16:52:31,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422539382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:52:31,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:52:31,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 28 [2022-11-25 16:52:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743525684] [2022-11-25 16:52:31,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:52:31,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 16:52:31,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:31,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 16:52:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=617, Unknown=1, NotChecked=50, Total=756 [2022-11-25 16:52:31,714 INFO L87 Difference]: Start difference. First operand 301 states and 412 transitions. Second operand has 28 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 9 states have call successors, (71), 7 states have call predecessors, (71), 7 states have return successors, (60), 7 states have call predecessors, (60), 9 states have call successors, (60) [2022-11-25 16:52:34,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 16:52:36,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:52:38,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:52:40,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:52:42,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:52:45,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:04,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:06,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:08,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:10,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:12,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:14,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:16,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:18,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:20,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 16:53:22,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:24,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:29,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:31,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:33,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:35,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:38,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:40,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:42,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:44,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:46,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:48,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:50,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:55,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:57,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:53:59,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:54:01,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:54:03,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:54:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:54:04,474 INFO L93 Difference]: Finished difference Result 818 states and 1151 transitions. [2022-11-25 16:54:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 16:54:04,474 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 9 states have call successors, (71), 7 states have call predecessors, (71), 7 states have return successors, (60), 7 states have call predecessors, (60), 9 states have call successors, (60) Word has length 357 [2022-11-25 16:54:04,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:54:04,479 INFO L225 Difference]: With dead ends: 818 [2022-11-25 16:54:04,479 INFO L226 Difference]: Without dead ends: 612 [2022-11-25 16:54:04,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 813 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=601, Invalid=2586, Unknown=9, NotChecked=110, Total=3306 [2022-11-25 16:54:04,482 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 589 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 6081 mSolverCounterSat, 408 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 7186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 6081 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 74.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:54:04,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1994 Invalid, 7186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 6081 Invalid, 33 Unknown, 664 Unchecked, 74.0s Time] [2022-11-25 16:54:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-25 16:54:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 532. [2022-11-25 16:54:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 329 states have (on average 1.1854103343465046) internal successors, (390), 334 states have internal predecessors, (390), 149 states have call successors, (149), 51 states have call predecessors, (149), 53 states have return successors, (173), 146 states have call predecessors, (173), 147 states have call successors, (173) [2022-11-25 16:54:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 712 transitions. [2022-11-25 16:54:04,539 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 712 transitions. Word has length 357 [2022-11-25 16:54:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:54:04,539 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 712 transitions. [2022-11-25 16:54:04,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 9 states have call successors, (71), 7 states have call predecessors, (71), 7 states have return successors, (60), 7 states have call predecessors, (60), 9 states have call successors, (60) [2022-11-25 16:54:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 712 transitions. [2022-11-25 16:54:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-25 16:54:04,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:54:04,543 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:54:04,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:04,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:04,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:54:04,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash 821296891, now seen corresponding path program 1 times [2022-11-25 16:54:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:54:04,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801386306] [2022-11-25 16:54:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:04,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:54:04,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:54:04,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571956957] [2022-11-25 16:54:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:04,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:04,885 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:54:04,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 16:54:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:06,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 3671 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 16:54:06,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-25 16:54:06,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:54:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801386306] [2022-11-25 16:54:06,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:54:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571956957] [2022-11-25 16:54:06,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571956957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:06,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:06,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:54:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055086563] [2022-11-25 16:54:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:54:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:54:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:54:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:54:06,183 INFO L87 Difference]: Start difference. First operand 532 states and 712 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-25 16:54:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:54:06,687 INFO L93 Difference]: Finished difference Result 906 states and 1234 transitions. [2022-11-25 16:54:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:54:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 4 states have call successors, (39) Word has length 363 [2022-11-25 16:54:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:54:06,692 INFO L225 Difference]: With dead ends: 906 [2022-11-25 16:54:06,693 INFO L226 Difference]: Without dead ends: 533 [2022-11-25 16:54:06,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:54:06,695 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 432 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 16:54:06,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1164 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 16:54:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-25 16:54:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 530. [2022-11-25 16:54:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 327 states have (on average 1.18348623853211) internal successors, (387), 332 states have internal predecessors, (387), 149 states have call successors, (149), 51 states have call predecessors, (149), 53 states have return successors, (175), 146 states have call predecessors, (175), 147 states have call successors, (175) [2022-11-25 16:54:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 711 transitions. [2022-11-25 16:54:06,760 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 711 transitions. Word has length 363 [2022-11-25 16:54:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:54:06,761 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 711 transitions. [2022-11-25 16:54:06,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-25 16:54:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 711 transitions. [2022-11-25 16:54:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-25 16:54:06,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:54:06,765 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:54:06,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:06,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:06,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:54:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1243045360, now seen corresponding path program 5 times [2022-11-25 16:54:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:54:06,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085477908] [2022-11-25 16:54:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:54:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:54:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:54:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:54:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:54:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:54:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:54:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:54:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:54:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:54:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:54:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:54:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:54:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:54:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 16:54:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:54:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:54:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 16:54:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 16:54:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:54:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:54:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 16:54:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 16:54:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:54:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-25 16:54:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 16:54:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:54:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:54:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:54:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 16:54:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:54:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 16:54:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-11-25 16:54:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 16:54:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 16:54:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:54:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-11-25 16:54:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-11-25 16:54:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:54:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-11-25 16:54:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-11-25 16:54:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-11-25 16:54:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-25 16:54:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-11-25 16:54:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:54:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:54:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 50 proven. 25 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2022-11-25 16:54:10,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:54:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085477908] [2022-11-25 16:54:10,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085477908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:54:10,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042781756] [2022-11-25 16:54:10,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 16:54:10,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:10,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:10,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:54:10,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 16:54:11,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:54:11,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:54:11,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:54:11,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2022-11-25 16:54:11,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:11,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042781756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:11,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:54:11,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-11-25 16:54:11,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109921939] [2022-11-25 16:54:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:11,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:54:11,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:54:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:54:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-25 16:54:11,658 INFO L87 Difference]: Start difference. First operand 530 states and 711 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-25 16:54:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:54:11,906 INFO L93 Difference]: Finished difference Result 1065 states and 1435 transitions. [2022-11-25 16:54:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:54:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 379 [2022-11-25 16:54:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:54:11,911 INFO L225 Difference]: With dead ends: 1065 [2022-11-25 16:54:11,911 INFO L226 Difference]: Without dead ends: 534 [2022-11-25 16:54:11,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-25 16:54:11,915 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:54:11,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1753 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:54:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-25 16:54:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-11-25 16:54:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 329 states have (on average 1.182370820668693) internal successors, (389), 336 states have internal predecessors, (389), 149 states have call successors, (149), 51 states have call predecessors, (149), 55 states have return successors, (178), 146 states have call predecessors, (178), 147 states have call successors, (178) [2022-11-25 16:54:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 716 transitions. [2022-11-25 16:54:11,975 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 716 transitions. Word has length 379 [2022-11-25 16:54:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:54:11,975 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 716 transitions. [2022-11-25 16:54:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-25 16:54:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 716 transitions. [2022-11-25 16:54:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-25 16:54:11,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:54:11,979 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:54:11,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:12,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 16:54:12,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:54:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1738217789, now seen corresponding path program 1 times [2022-11-25 16:54:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:54:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433705517] [2022-11-25 16:54:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:54:12,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:54:12,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554665867] [2022-11-25 16:54:12,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:12,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:12,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:12,301 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:54:12,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 16:54:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:13,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 3903 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:54:13,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-25 16:54:13,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:54:13,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433705517] [2022-11-25 16:54:13,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:54:13,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554665867] [2022-11-25 16:54:13,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554665867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:13,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:13,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:54:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609084460] [2022-11-25 16:54:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:13,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:54:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:54:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:54:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:54:13,650 INFO L87 Difference]: Start difference. First operand 534 states and 716 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (53), 4 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-25 16:54:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:54:13,752 INFO L93 Difference]: Finished difference Result 1040 states and 1411 transitions. [2022-11-25 16:54:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:54:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (53), 4 states have call predecessors, (53), 2 states have call successors, (53) Word has length 403 [2022-11-25 16:54:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:54:13,758 INFO L225 Difference]: With dead ends: 1040 [2022-11-25 16:54:13,758 INFO L226 Difference]: Without dead ends: 509 [2022-11-25 16:54:13,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:54:13,762 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 2 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:54:13,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2282 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:54:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-25 16:54:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 506. [2022-11-25 16:54:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 312 states have (on average 1.1794871794871795) internal successors, (368), 317 states have internal predecessors, (368), 143 states have call successors, (143), 48 states have call predecessors, (143), 50 states have return successors, (168), 140 states have call predecessors, (168), 141 states have call successors, (168) [2022-11-25 16:54:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 679 transitions. [2022-11-25 16:54:13,819 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 679 transitions. Word has length 403 [2022-11-25 16:54:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:54:13,819 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 679 transitions. [2022-11-25 16:54:13,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (53), 4 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-25 16:54:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 679 transitions. [2022-11-25 16:54:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-25 16:54:13,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:54:13,823 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:54:13,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 16:54:14,036 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:54:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2033507344, now seen corresponding path program 1 times [2022-11-25 16:54:14,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:54:14,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988290493] [2022-11-25 16:54:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:14,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:54:14,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:54:14,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701574230] [2022-11-25 16:54:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:14,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:14,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:54:14,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 16:54:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:15,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 3895 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 16:54:15,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-11-25 16:54:15,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:15,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:54:15,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988290493] [2022-11-25 16:54:15,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:54:15,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701574230] [2022-11-25 16:54:15,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701574230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:15,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:15,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:54:15,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672302194] [2022-11-25 16:54:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:54:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:54:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:54:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:54:15,475 INFO L87 Difference]: Start difference. First operand 506 states and 679 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-25 16:54:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:54:15,741 INFO L93 Difference]: Finished difference Result 875 states and 1187 transitions. [2022-11-25 16:54:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:54:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 391 [2022-11-25 16:54:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:54:15,745 INFO L225 Difference]: With dead ends: 875 [2022-11-25 16:54:15,746 INFO L226 Difference]: Without dead ends: 506 [2022-11-25 16:54:15,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:54:15,751 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 2 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:54:15,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2113 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:54:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-25 16:54:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2022-11-25 16:54:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 312 states have (on average 1.1794871794871795) internal successors, (368), 317 states have internal predecessors, (368), 143 states have call successors, (143), 48 states have call predecessors, (143), 50 states have return successors, (167), 140 states have call predecessors, (167), 141 states have call successors, (167) [2022-11-25 16:54:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 678 transitions. [2022-11-25 16:54:15,805 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 678 transitions. Word has length 391 [2022-11-25 16:54:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:54:15,806 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 678 transitions. [2022-11-25 16:54:15,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-25 16:54:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 678 transitions. [2022-11-25 16:54:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-25 16:54:15,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:54:15,810 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:54:15,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:16,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 16:54:16,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:54:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash -408110106, now seen corresponding path program 1 times [2022-11-25 16:54:16,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:54:16,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619657878] [2022-11-25 16:54:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:16,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:54:16,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:54:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590224365] [2022-11-25 16:54:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:16,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:16,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:16,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:54:16,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 16:54:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:17,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 3949 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 16:54:17,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2022-11-25 16:54:17,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:54:17,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619657878] [2022-11-25 16:54:17,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:54:17,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590224365] [2022-11-25 16:54:17,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590224365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:17,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:17,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:54:17,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955245890] [2022-11-25 16:54:17,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:17,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:54:17,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:54:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:54:17,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:54:17,468 INFO L87 Difference]: Start difference. First operand 506 states and 678 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 3 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-25 16:54:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:54:17,692 INFO L93 Difference]: Finished difference Result 996 states and 1333 transitions. [2022-11-25 16:54:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:54:17,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 3 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 402 [2022-11-25 16:54:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:54:17,697 INFO L225 Difference]: With dead ends: 996 [2022-11-25 16:54:17,697 INFO L226 Difference]: Without dead ends: 475 [2022-11-25 16:54:17,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:54:17,700 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:54:17,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1754 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:54:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-25 16:54:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 463. [2022-11-25 16:54:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 284 states have (on average 1.1830985915492958) internal successors, (336), 288 states have internal predecessors, (336), 135 states have call successors, (135), 43 states have call predecessors, (135), 43 states have return successors, (153), 131 states have call predecessors, (153), 133 states have call successors, (153) [2022-11-25 16:54:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 624 transitions. [2022-11-25 16:54:17,748 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 624 transitions. Word has length 402 [2022-11-25 16:54:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:54:17,749 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 624 transitions. [2022-11-25 16:54:17,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 3 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-25 16:54:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 624 transitions. [2022-11-25 16:54:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-25 16:54:17,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:54:17,753 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:54:17,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 16:54:17,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:54:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -362352666, now seen corresponding path program 1 times [2022-11-25 16:54:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:54:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719173021] [2022-11-25 16:54:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:54:18,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:54:18,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119191047] [2022-11-25 16:54:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:18,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:54:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:18,086 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:54:18,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c16d17-5427-4c7c-b550-4dca4f4d4e85/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process