./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU --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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:15:23,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:15:23,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:15:23,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:15:23,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:15:23,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:15:23,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:15:23,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:15:23,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:15:23,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:15:23,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:15:23,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:15:23,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:15:23,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:15:23,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:15:23,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:15:23,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:15:23,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:15:23,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:15:23,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:15:23,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:15:23,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:15:23,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:15:23,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:15:23,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:15:23,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:15:23,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:15:23,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:15:23,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:15:23,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:15:23,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:15:23,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:15:23,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:15:23,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:15:23,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:15:23,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:15:23,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:15:23,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:15:23,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:15:23,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:15:23,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:15:23,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:15:23,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:15:23,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:15:23,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:15:23,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:15:23,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:15:23,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:15:23,305 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:15:23,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:15:23,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:15:23,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:15:23,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:15:23,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:15:23,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:15:23,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:15:23,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:15:23,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:15:23,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:15:23,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:15:23,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:15:23,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:15:23,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:15:23,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:15:23,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:15:23,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:15:23,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:15:23,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:15:23,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:15:23,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:15:23,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:15:23,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2021-11-02 22:15:23,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:15:23,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:15:23,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:15:23,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:15:23,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:15:23,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2021-11-02 22:15:23,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/data/052d39d7d/c7a31c37ac2c4fa1a217809ff5b843cd/FLAG449a61aa5 [2021-11-02 22:15:25,018 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:15:25,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2021-11-02 22:15:25,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/data/052d39d7d/c7a31c37ac2c4fa1a217809ff5b843cd/FLAG449a61aa5 [2021-11-02 22:15:25,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/data/052d39d7d/c7a31c37ac2c4fa1a217809ff5b843cd [2021-11-02 22:15:25,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:15:25,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:15:25,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:15:25,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:15:25,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:15:25,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:15:25" (1/1) ... [2021-11-02 22:15:25,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4482050a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:25, skipping insertion in model container [2021-11-02 22:15:25,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:15:25" (1/1) ... [2021-11-02 22:15:25,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:15:25,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:15:25,950 WARN L228 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_9b954198-9d20-4c96-90d4-a55b06048f7c/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2021-11-02 22:15:25,958 WARN L228 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_9b954198-9d20-4c96-90d4-a55b06048f7c/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2021-11-02 22:15:25,984 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 22:15:25,990 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 22:15:27,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,082 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,115 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 22:15:27,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 22:15:27,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 22:15:27,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 22:15:27,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 22:15:27,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 22:15:27,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 22:15:27,624 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 22:15:27,625 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 22:15:27,625 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 22:15:27,811 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 22:15:27,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:15:27,873 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:15:27,892 WARN L228 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_9b954198-9d20-4c96-90d4-a55b06048f7c/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2021-11-02 22:15:27,893 WARN L228 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_9b954198-9d20-4c96-90d4-a55b06048f7c/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2021-11-02 22:15:27,896 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 22:15:27,898 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 22:15:27,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,961 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:27,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:15:28,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 22:15:28,038 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 22:15:28,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 22:15:28,041 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 22:15:28,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 22:15:28,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 22:15:28,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 22:15:28,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 22:15:28,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 22:15:28,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 22:15:28,088 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 22:15:28,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:15:28,432 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:15:28,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28 WrapperNode [2021-11-02 22:15:28,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:15:28,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:15:28,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:15:28,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:15:28,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:15:28,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:15:28,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:15:28,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:15:28,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:15:28,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:15:28,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:15:28,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:15:28,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (1/1) ... [2021-11-02 22:15:28,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:15:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:28,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:15:28,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:15:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:15:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:15:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:15:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:15:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:15:28,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:15:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:15:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:15:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:15:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:15:30,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:15:30,505 INFO L299 CfgBuilder]: Removed 119 assume(true) statements. [2021-11-02 22:15:30,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:15:30 BoogieIcfgContainer [2021-11-02 22:15:30,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:15:30,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:15:30,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:15:30,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:15:30,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:15:25" (1/3) ... [2021-11-02 22:15:30,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe5b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:15:30, skipping insertion in model container [2021-11-02 22:15:30,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:28" (2/3) ... [2021-11-02 22:15:30,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe5b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:15:30, skipping insertion in model container [2021-11-02 22:15:30,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:15:30" (3/3) ... [2021-11-02 22:15:30,520 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2021-11-02 22:15:30,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:15:30,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 22:15:30,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:15:30,630 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:15:30,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 22:15:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 206 states have (on average 1.5388349514563107) internal successors, (317), 216 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:15:30,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:30,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:30,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash 170416363, now seen corresponding path program 1 times [2021-11-02 22:15:30,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:30,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729396953] [2021-11-02 22:15:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:30,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:31,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:31,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729396953] [2021-11-02 22:15:31,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729396953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:31,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:31,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:15:31,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864568410] [2021-11-02 22:15:31,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:15:31,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:31,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:15:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:15:31,222 INFO L87 Difference]: Start difference. First operand has 217 states, 206 states have (on average 1.5388349514563107) internal successors, (317), 216 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:31,271 INFO L93 Difference]: Finished difference Result 430 states and 629 transitions. [2021-11-02 22:15:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:15:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:15:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:31,288 INFO L225 Difference]: With dead ends: 430 [2021-11-02 22:15:31,288 INFO L226 Difference]: Without dead ends: 212 [2021-11-02 22:15:31,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:15:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-02 22:15:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-02 22:15:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 202 states have (on average 1.391089108910891) internal successors, (281), 211 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 281 transitions. [2021-11-02 22:15:31,364 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 281 transitions. Word has length 56 [2021-11-02 22:15:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:31,365 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 281 transitions. [2021-11-02 22:15:31,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 281 transitions. [2021-11-02 22:15:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:15:31,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:31,369 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:31,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:15:31,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 828944299, now seen corresponding path program 1 times [2021-11-02 22:15:31,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:31,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490504254] [2021-11-02 22:15:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:31,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:31,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490504254] [2021-11-02 22:15:31,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490504254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:31,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:31,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:15:31,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167947350] [2021-11-02 22:15:31,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:15:31,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:15:31,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:15:31,611 INFO L87 Difference]: Start difference. First operand 212 states and 281 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:31,904 INFO L93 Difference]: Finished difference Result 462 states and 632 transitions. [2021-11-02 22:15:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:15:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:15:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:31,916 INFO L225 Difference]: With dead ends: 462 [2021-11-02 22:15:31,916 INFO L226 Difference]: Without dead ends: 272 [2021-11-02 22:15:31,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:15:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-02 22:15:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 222. [2021-11-02 22:15:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 212 states have (on average 1.3726415094339623) internal successors, (291), 221 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 291 transitions. [2021-11-02 22:15:31,967 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 291 transitions. Word has length 56 [2021-11-02 22:15:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:31,968 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 291 transitions. [2021-11-02 22:15:31,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 291 transitions. [2021-11-02 22:15:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:15:31,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:31,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:31,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:15:31,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:31,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:31,991 INFO L85 PathProgramCache]: Analyzing trace with hash 434577513, now seen corresponding path program 1 times [2021-11-02 22:15:31,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:31,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370281282] [2021-11-02 22:15:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:31,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:32,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:32,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370281282] [2021-11-02 22:15:32,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370281282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:32,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:32,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:15:32,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835494306] [2021-11-02 22:15:32,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:15:32,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:15:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:15:32,256 INFO L87 Difference]: Start difference. First operand 222 states and 291 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:32,450 INFO L93 Difference]: Finished difference Result 458 states and 617 transitions. [2021-11-02 22:15:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:15:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:15:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:32,454 INFO L225 Difference]: With dead ends: 458 [2021-11-02 22:15:32,454 INFO L226 Difference]: Without dead ends: 262 [2021-11-02 22:15:32,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:15:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-02 22:15:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 232. [2021-11-02 22:15:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 222 states have (on average 1.3558558558558558) internal successors, (301), 231 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 301 transitions. [2021-11-02 22:15:32,489 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 301 transitions. Word has length 56 [2021-11-02 22:15:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:32,490 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 301 transitions. [2021-11-02 22:15:32,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 301 transitions. [2021-11-02 22:15:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:15:32,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:32,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:32,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:15:32,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405785, now seen corresponding path program 1 times [2021-11-02 22:15:32,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:32,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086803286] [2021-11-02 22:15:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:32,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:32,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086803286] [2021-11-02 22:15:32,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086803286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:32,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:32,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:15:32,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90303532] [2021-11-02 22:15:32,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:15:32,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:32,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:15:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:15:32,662 INFO L87 Difference]: Start difference. First operand 232 states and 301 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:32,812 INFO L93 Difference]: Finished difference Result 454 states and 602 transitions. [2021-11-02 22:15:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:15:32,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:15:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:32,816 INFO L225 Difference]: With dead ends: 454 [2021-11-02 22:15:32,816 INFO L226 Difference]: Without dead ends: 252 [2021-11-02 22:15:32,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:15:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-02 22:15:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2021-11-02 22:15:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 237 states have (on average 1.3333333333333333) internal successors, (316), 246 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 316 transitions. [2021-11-02 22:15:32,830 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 316 transitions. Word has length 56 [2021-11-02 22:15:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:32,833 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 316 transitions. [2021-11-02 22:15:32,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 316 transitions. [2021-11-02 22:15:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:15:32,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:32,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:32,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:15:32,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1534646171, now seen corresponding path program 1 times [2021-11-02 22:15:32,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:32,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670538205] [2021-11-02 22:15:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:32,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:33,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:33,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670538205] [2021-11-02 22:15:33,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670538205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:33,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:33,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:15:33,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575392472] [2021-11-02 22:15:33,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:15:33,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:15:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:15:33,036 INFO L87 Difference]: Start difference. First operand 247 states and 316 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:33,158 INFO L93 Difference]: Finished difference Result 448 states and 574 transitions. [2021-11-02 22:15:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:15:33,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:15:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:33,161 INFO L225 Difference]: With dead ends: 448 [2021-11-02 22:15:33,161 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:15:33,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:15:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-02 22:15:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 229 states have (on average 1.3275109170305677) internal successors, (304), 238 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 304 transitions. [2021-11-02 22:15:33,205 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 304 transitions. Word has length 56 [2021-11-02 22:15:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:33,206 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 304 transitions. [2021-11-02 22:15:33,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 304 transitions. [2021-11-02 22:15:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:15:33,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:33,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:33,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:15:33,209 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1858303597, now seen corresponding path program 1 times [2021-11-02 22:15:33,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:33,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288787259] [2021-11-02 22:15:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:33,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:33,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:33,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288787259] [2021-11-02 22:15:33,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288787259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:33,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:33,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:15:33,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593509114] [2021-11-02 22:15:33,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:15:33,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:15:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:15:33,430 INFO L87 Difference]: Start difference. First operand 239 states and 304 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:33,570 INFO L93 Difference]: Finished difference Result 524 states and 656 transitions. [2021-11-02 22:15:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:15:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 22:15:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:33,580 INFO L225 Difference]: With dead ends: 524 [2021-11-02 22:15:33,580 INFO L226 Difference]: Without dead ends: 316 [2021-11-02 22:15:33,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:15:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-02 22:15:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 229. [2021-11-02 22:15:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 228 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 286 transitions. [2021-11-02 22:15:33,597 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 286 transitions. Word has length 56 [2021-11-02 22:15:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:33,597 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 286 transitions. [2021-11-02 22:15:33,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 286 transitions. [2021-11-02 22:15:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 22:15:33,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:33,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:33,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:15:33,600 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1990287981, now seen corresponding path program 1 times [2021-11-02 22:15:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:33,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538651503] [2021-11-02 22:15:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:33,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:33,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:33,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538651503] [2021-11-02 22:15:33,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538651503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:33,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:33,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:15:33,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699354128] [2021-11-02 22:15:33,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:15:33,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:15:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:15:33,787 INFO L87 Difference]: Start difference. First operand 229 states and 286 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:34,011 INFO L93 Difference]: Finished difference Result 534 states and 662 transitions. [2021-11-02 22:15:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:15:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 22:15:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:34,017 INFO L225 Difference]: With dead ends: 534 [2021-11-02 22:15:34,018 INFO L226 Difference]: Without dead ends: 342 [2021-11-02 22:15:34,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:15:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-02 22:15:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 229. [2021-11-02 22:15:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 219 states have (on average 1.2876712328767124) internal successors, (282), 228 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 282 transitions. [2021-11-02 22:15:34,037 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 282 transitions. Word has length 60 [2021-11-02 22:15:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:34,037 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 282 transitions. [2021-11-02 22:15:34,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 282 transitions. [2021-11-02 22:15:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:15:34,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:34,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:34,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:15:34,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:34,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 49668941, now seen corresponding path program 1 times [2021-11-02 22:15:34,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:34,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422639829] [2021-11-02 22:15:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:34,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:34,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:34,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422639829] [2021-11-02 22:15:34,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422639829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:34,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:34,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:15:34,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220711438] [2021-11-02 22:15:34,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:15:34,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:15:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:34,240 INFO L87 Difference]: Start difference. First operand 229 states and 282 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:34,608 INFO L93 Difference]: Finished difference Result 723 states and 890 transitions. [2021-11-02 22:15:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:15:34,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:15:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:34,614 INFO L225 Difference]: With dead ends: 723 [2021-11-02 22:15:34,614 INFO L226 Difference]: Without dead ends: 530 [2021-11-02 22:15:34,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:15:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-02 22:15:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 233. [2021-11-02 22:15:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 223 states have (on average 1.2825112107623318) internal successors, (286), 232 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 286 transitions. [2021-11-02 22:15:34,639 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 286 transitions. Word has length 64 [2021-11-02 22:15:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:34,639 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 286 transitions. [2021-11-02 22:15:34,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 286 transitions. [2021-11-02 22:15:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:15:34,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:34,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:34,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:15:34,642 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:34,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1788737394, now seen corresponding path program 1 times [2021-11-02 22:15:34,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:34,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29726891] [2021-11-02 22:15:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:34,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:34,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:34,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29726891] [2021-11-02 22:15:34,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29726891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:34,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:34,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:15:34,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808874214] [2021-11-02 22:15:34,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:15:34,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:15:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:34,883 INFO L87 Difference]: Start difference. First operand 233 states and 286 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:35,275 INFO L93 Difference]: Finished difference Result 726 states and 889 transitions. [2021-11-02 22:15:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:15:35,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 22:15:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:35,280 INFO L225 Difference]: With dead ends: 726 [2021-11-02 22:15:35,281 INFO L226 Difference]: Without dead ends: 530 [2021-11-02 22:15:35,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:15:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-02 22:15:35,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 237. [2021-11-02 22:15:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 227 states have (on average 1.277533039647577) internal successors, (290), 236 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 290 transitions. [2021-11-02 22:15:35,306 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 290 transitions. Word has length 66 [2021-11-02 22:15:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:35,307 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 290 transitions. [2021-11-02 22:15:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 290 transitions. [2021-11-02 22:15:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:15:35,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:35,316 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:35,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:15:35,317 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:35,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1529718097, now seen corresponding path program 1 times [2021-11-02 22:15:35,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:35,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459409249] [2021-11-02 22:15:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:35,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:35,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:35,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459409249] [2021-11-02 22:15:35,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459409249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:35,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:35,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:15:35,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595494627] [2021-11-02 22:15:35,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:15:35,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:15:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:15:35,520 INFO L87 Difference]: Start difference. First operand 237 states and 290 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:36,146 INFO L93 Difference]: Finished difference Result 733 states and 897 transitions. [2021-11-02 22:15:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:15:36,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 22:15:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:36,151 INFO L225 Difference]: With dead ends: 733 [2021-11-02 22:15:36,151 INFO L226 Difference]: Without dead ends: 526 [2021-11-02 22:15:36,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:15:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-02 22:15:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 241. [2021-11-02 22:15:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2727272727272727) internal successors, (294), 240 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 294 transitions. [2021-11-02 22:15:36,173 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 294 transitions. Word has length 76 [2021-11-02 22:15:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:36,173 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 294 transitions. [2021-11-02 22:15:36,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 294 transitions. [2021-11-02 22:15:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:15:36,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:36,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:36,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:15:36,176 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1176629715, now seen corresponding path program 1 times [2021-11-02 22:15:36,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:36,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786323888] [2021-11-02 22:15:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:36,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:36,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:36,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786323888] [2021-11-02 22:15:36,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786323888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:36,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:36,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:15:36,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494567365] [2021-11-02 22:15:36,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:15:36,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:15:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:15:36,328 INFO L87 Difference]: Start difference. First operand 241 states and 294 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:36,554 INFO L93 Difference]: Finished difference Result 648 states and 782 transitions. [2021-11-02 22:15:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:15:36,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 22:15:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:36,558 INFO L225 Difference]: With dead ends: 648 [2021-11-02 22:15:36,559 INFO L226 Difference]: Without dead ends: 444 [2021-11-02 22:15:36,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-02 22:15:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 241. [2021-11-02 22:15:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2640692640692641) internal successors, (292), 240 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 292 transitions. [2021-11-02 22:15:36,582 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 292 transitions. Word has length 76 [2021-11-02 22:15:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:36,583 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 292 transitions. [2021-11-02 22:15:36,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 292 transitions. [2021-11-02 22:15:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:15:36,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:36,585 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:36,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:15:36,586 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:36,587 INFO L85 PathProgramCache]: Analyzing trace with hash 660004237, now seen corresponding path program 1 times [2021-11-02 22:15:36,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:36,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153666035] [2021-11-02 22:15:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:36,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:15:36,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:36,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153666035] [2021-11-02 22:15:36,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153666035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:36,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49376786] [2021-11-02 22:15:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:36,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:36,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:36,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:15:36,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:15:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-02 22:15:37,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:15:37,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:15:37,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-02 22:15:38,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-02 22:15:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:15:38,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49376786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:38,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:15:38,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-11-02 22:15:38,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197440168] [2021-11-02 22:15:38,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:15:38,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:15:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:15:38,933 INFO L87 Difference]: Start difference. First operand 241 states and 292 transitions. Second operand has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:44,569 INFO L93 Difference]: Finished difference Result 1781 states and 2097 transitions. [2021-11-02 22:15:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-02 22:15:44,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 22:15:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:44,581 INFO L225 Difference]: With dead ends: 1781 [2021-11-02 22:15:44,581 INFO L226 Difference]: Without dead ends: 1579 [2021-11-02 22:15:44,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1275, Invalid=3981, Unknown=0, NotChecked=0, Total=5256 [2021-11-02 22:15:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-02 22:15:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 365. [2021-11-02 22:15:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 355 states have (on average 1.2450704225352112) internal successors, (442), 364 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 442 transitions. [2021-11-02 22:15:44,640 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 442 transitions. Word has length 80 [2021-11-02 22:15:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:44,640 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 442 transitions. [2021-11-02 22:15:44,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 442 transitions. [2021-11-02 22:15:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:15:44,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:44,643 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:44,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:15:44,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:44,857 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:15:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:44,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2023690006, now seen corresponding path program 1 times [2021-11-02 22:15:44,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:44,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426180138] [2021-11-02 22:15:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:44,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:15:45,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:45,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426180138] [2021-11-02 22:15:45,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426180138] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:45,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131678482] [2021-11-02 22:15:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:45,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:45,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:45,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:15:45,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:15:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:46,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-02 22:15:46,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:15:46,240 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 22:15:46,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-02 22:15:46,275 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 22:15:46,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-02 22:15:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:15:52,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131678482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:52,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:15:52,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2021-11-02 22:15:52,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446512355] [2021-11-02 22:15:52,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:15:52,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:15:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:15:52,202 INFO L87 Difference]: Start difference. First operand 365 states and 442 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:04,353 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2021-11-02 22:16:12,558 WARN L207 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 115 DAG size of output: 83 [2021-11-02 22:16:18,735 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 100 [2021-11-02 22:16:30,957 WARN L207 SmtUtils]: Spent 12.14 s on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2021-11-02 22:16:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:16:35,576 INFO L93 Difference]: Finished difference Result 518 states and 630 transitions. [2021-11-02 22:16:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:16:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 22:16:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:16:35,584 INFO L225 Difference]: With dead ends: 518 [2021-11-02 22:16:35,584 INFO L226 Difference]: Without dead ends: 365 [2021-11-02 22:16:35,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:16:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-02 22:16:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-02 22:16:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 355 states have (on average 1.2394366197183098) internal successors, (440), 364 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 440 transitions. [2021-11-02 22:16:35,645 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 440 transitions. Word has length 82 [2021-11-02 22:16:35,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:16:35,646 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 440 transitions. [2021-11-02 22:16:35,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 440 transitions. [2021-11-02 22:16:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:16:35,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:35,648 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:35,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 22:16:35,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:16:35,864 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:16:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2021842964, now seen corresponding path program 1 times [2021-11-02 22:16:35,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:35,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908562282] [2021-11-02 22:16:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:35,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:16:36,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:36,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908562282] [2021-11-02 22:16:36,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908562282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:36,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:36,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 22:16:36,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475805997] [2021-11-02 22:16:36,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:16:36,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:16:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:16:36,541 INFO L87 Difference]: Start difference. First operand 365 states and 440 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:16:38,244 INFO L93 Difference]: Finished difference Result 734 states and 895 transitions. [2021-11-02 22:16:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:16:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 22:16:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:16:38,249 INFO L225 Difference]: With dead ends: 734 [2021-11-02 22:16:38,249 INFO L226 Difference]: Without dead ends: 580 [2021-11-02 22:16:38,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:16:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-02 22:16:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 365. [2021-11-02 22:16:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 355 states have (on average 1.236619718309859) internal successors, (439), 364 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 439 transitions. [2021-11-02 22:16:38,315 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 439 transitions. Word has length 82 [2021-11-02 22:16:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:16:38,316 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 439 transitions. [2021-11-02 22:16:38,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 439 transitions. [2021-11-02 22:16:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:16:38,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:38,318 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:38,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:16:38,319 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:16:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:38,320 INFO L85 PathProgramCache]: Analyzing trace with hash -246835602, now seen corresponding path program 1 times [2021-11-02 22:16:38,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:38,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382432763] [2021-11-02 22:16:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:38,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:16:38,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:38,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382432763] [2021-11-02 22:16:38,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382432763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:16:38,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904331100] [2021-11-02 22:16:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:38,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:16:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:16:38,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:16:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:16:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:39,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-02 22:16:39,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:16:39,692 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 22:16:39,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-02 22:16:39,713 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-02 22:16:39,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-02 22:16:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:16:45,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904331100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:45,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:16:45,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 25 [2021-11-02 22:16:45,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29880092] [2021-11-02 22:16:45,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:16:45,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:45,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:16:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:16:45,026 INFO L87 Difference]: Start difference. First operand 365 states and 439 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:04,208 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2021-11-02 22:17:10,431 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification. DAG size of input: 111 DAG size of output: 82 [2021-11-02 22:17:18,665 WARN L207 SmtUtils]: Spent 8.14 s on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2021-11-02 22:17:26,973 WARN L207 SmtUtils]: Spent 8.15 s on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2021-11-02 22:17:39,194 WARN L207 SmtUtils]: Spent 12.14 s on a formula simplification. DAG size of input: 110 DAG size of output: 103 [2021-11-02 22:17:51,402 WARN L207 SmtUtils]: Spent 12.15 s on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2021-11-02 22:17:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:17:56,036 INFO L93 Difference]: Finished difference Result 522 states and 631 transitions. [2021-11-02 22:17:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:17:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 22:17:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:17:56,040 INFO L225 Difference]: With dead ends: 522 [2021-11-02 22:17:56,040 INFO L226 Difference]: Without dead ends: 366 [2021-11-02 22:17:56,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 66.8s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:17:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-02 22:17:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2021-11-02 22:17:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 355 states have (on average 1.2309859154929577) internal successors, (437), 364 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 437 transitions. [2021-11-02 22:17:56,105 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 437 transitions. Word has length 82 [2021-11-02 22:17:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:17:56,106 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 437 transitions. [2021-11-02 22:17:56,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 437 transitions. [2021-11-02 22:17:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:17:56,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:17:56,109 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:17:56,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 22:17:56,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 22:17:56,324 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:17:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:17:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash 433222768, now seen corresponding path program 1 times [2021-11-02 22:17:56,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:17:56,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451410621] [2021-11-02 22:17:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:17:56,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:17:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:17:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:17:56,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:17:56,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451410621] [2021-11-02 22:17:56,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451410621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:17:56,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241892857] [2021-11-02 22:17:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:17:56,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:17:56,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:17:56,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:17:56,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b954198-9d20-4c96-90d4-a55b06048f7c/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:17:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:17:57,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-02 22:17:57,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:17:57,539 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 22:17:57,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-02 22:18:11,633 WARN L207 SmtUtils]: Spent 10.04 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 22:18:29,820 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 22:18:42,008 WARN L207 SmtUtils]: Spent 10.03 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 22:18:54,314 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 22:19:04,433 WARN L207 SmtUtils]: Spent 10.03 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 22:19:14,802 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-02 22:19:22,178 WARN L207 SmtUtils]: Spent 7.25 s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-02 22:19:32,382 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 22:19:43,189 WARN L207 SmtUtils]: Spent 10.03 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 22:19:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:19:43,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241892857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:19:43,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:19:43,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-11-02 22:19:43,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136637904] [2021-11-02 22:19:43,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:19:43,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:19:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:19:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=476, Unknown=8, NotChecked=0, Total=552 [2021-11-02 22:19:43,254 INFO L87 Difference]: Start difference. First operand 365 states and 437 transitions. Second operand has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:20:05,483 WARN L207 SmtUtils]: Spent 10.03 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 22:20:27,646 WARN L207 SmtUtils]: Spent 20.07 s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-02 22:20:47,785 WARN L207 SmtUtils]: Spent 20.06 s on a formula simplification that was a NOOP. DAG size: 38 [2021-11-02 22:21:08,017 WARN L207 SmtUtils]: Spent 20.08 s on a formula simplification that was a NOOP. DAG size: 42 [2021-11-02 22:21:48,231 WARN L207 SmtUtils]: Spent 40.15 s on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-11-02 22:22:07,429 WARN L207 SmtUtils]: Spent 19.08 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-02 22:22:47,642 WARN L207 SmtUtils]: Spent 40.14 s on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-11-02 22:23:39,975 WARN L207 SmtUtils]: Spent 52.24 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-11-02 22:24:40,267 WARN L207 SmtUtils]: Spent 1.00 m on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-11-02 22:25:32,184 WARN L207 SmtUtils]: Spent 51.84 s on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-11-02 22:26:26,527 WARN L207 SmtUtils]: Spent 54.21 s on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-11-02 22:27:16,697 WARN L207 SmtUtils]: Spent 50.12 s on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-11-02 22:27:53,201 WARN L207 SmtUtils]: Spent 36.13 s on a formula simplification that was a NOOP. DAG size: 70 [2021-11-02 22:28:31,352 WARN L207 SmtUtils]: Spent 38.12 s on a formula simplification that was a NOOP. DAG size: 71 [2021-11-02 22:29:03,800 WARN L207 SmtUtils]: Spent 32.42 s on a formula simplification that was a NOOP. DAG size: 72