./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G --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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:11:04,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:11:04,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:11:04,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:11:04,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:11:04,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:11:04,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:11:04,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:11:04,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:11:04,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:11:04,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:11:04,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:11:04,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:11:04,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:11:04,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:11:04,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:11:04,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:11:04,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:11:04,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:11:04,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:11:04,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:11:04,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:11:04,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:11:04,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:11:04,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:11:04,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:11:04,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:11:04,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:11:04,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:11:04,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:11:04,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:11:04,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:11:04,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:11:04,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:11:04,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:11:04,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:11:04,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:11:04,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:11:04,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:11:04,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:11:04,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:11:04,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 14:11:04,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:11:04,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:11:04,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:11:04,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:11:04,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:11:04,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:11:04,200 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:11:04,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:11:04,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:11:04,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:11:04,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:11:04,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:11:04,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:11:04,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:11:04,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:11:04,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:11:04,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:11:04,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:11:04,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:11:04,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:11:04,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:11:04,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:11:04,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:11:04,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:11:04,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:11:04,206 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:11:04,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:11:04,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:11:04,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:11:04,207 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_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-23 14:11:04,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:11:04,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:11:04,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:11:04,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:11:04,512 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:11:04,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-23 14:11:04,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/data/59c91b8b7/e23ef78111b4452eab370b060786516c/FLAG8c4ebe73e [2021-11-23 14:11:05,471 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:11:05,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-23 14:11:05,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/data/59c91b8b7/e23ef78111b4452eab370b060786516c/FLAG8c4ebe73e [2021-11-23 14:11:05,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/data/59c91b8b7/e23ef78111b4452eab370b060786516c [2021-11-23 14:11:05,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:11:05,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:11:06,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:11:06,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:11:06,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:11:06,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:05" (1/1) ... [2021-11-23 14:11:06,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1001b6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:06, skipping insertion in model container [2021-11-23 14:11:06,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:05" (1/1) ... [2021-11-23 14:11:06,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:11:06,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:11:06,490 WARN L230 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_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-23 14:11:06,496 WARN L230 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_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-23 14:11:07,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,673 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:07,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,193 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 14:11:08,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 14:11:08,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 14:11:08,200 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 14:11:08,202 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 14:11:08,203 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 14:11:08,204 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 14:11:08,205 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 14:11:08,205 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 14:11:08,207 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 14:11:08,461 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 14:11:08,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,968 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:08,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:11:09,068 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:11:09,092 WARN L230 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_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-23 14:11:09,101 WARN L230 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_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-23 14:11:09,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 14:11:09,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 14:11:09,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 14:11:09,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 14:11:09,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 14:11:09,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 14:11:09,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 14:11:09,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 14:11:09,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 14:11:09,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 14:11:09,251 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 14:11:09,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,368 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,371 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,371 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,385 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,386 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,387 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,387 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 14:11:09,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:11:09,779 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:11:09,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09 WrapperNode [2021-11-23 14:11:09,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:11:09,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:11:09,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:11:09,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:11:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:09,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,076 INFO L137 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 750, calls inlined = 76, statements flattened = 1702 [2021-11-23 14:11:10,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:11:10,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:11:10,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:11:10,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:11:10,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:11:10,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:11:10,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:11:10,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:11:10,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (1/1) ... [2021-11-23 14:11:10,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:11:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:10,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:11:10,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:11:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 14:11:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:11:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:11:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:11:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 14:11:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:11:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:11:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:11:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 14:11:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:11:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:11:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 14:11:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:11:10,678 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:11:10,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:11:12,235 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !true; [2021-11-23 14:11:12,235 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:11:12,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:11:12,248 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 14:11:12,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:12 BoogieIcfgContainer [2021-11-23 14:11:12,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:11:12,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:11:12,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:11:12,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:11:12,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:05" (1/3) ... [2021-11-23 14:11:12,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c40120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:12, skipping insertion in model container [2021-11-23 14:11:12,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:09" (2/3) ... [2021-11-23 14:11:12,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c40120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:12, skipping insertion in model container [2021-11-23 14:11:12,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:12" (3/3) ... [2021-11-23 14:11:12,258 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-11-23 14:11:12,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:11:12,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 14:11:12,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:11:12,324 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 [2021-11-23 14:11:12,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 14:11:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 196 states have (on average 1.4540816326530612) internal successors, (285), 202 states have internal predecessors, (285), 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) [2021-11-23 14:11:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 14:11:12,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:12,355 INFO L514 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] [2021-11-23 14:11:12,355 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1999182466, now seen corresponding path program 1 times [2021-11-23 14:11:12,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:12,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701227069] [2021-11-23 14:11:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:12,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:12,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:12,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701227069] [2021-11-23 14:11:12,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701227069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:12,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:12,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:11:12,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121973497] [2021-11-23 14:11:12,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:12,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:11:12,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:11:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:11:12,957 INFO L87 Difference]: Start difference. First operand has 203 states, 196 states have (on average 1.4540816326530612) internal successors, (285), 202 states have internal predecessors, (285), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-23 14:11:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:12,998 INFO L93 Difference]: Finished difference Result 401 states and 564 transitions. [2021-11-23 14:11:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:11:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 62 [2021-11-23 14:11:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:13,012 INFO L225 Difference]: With dead ends: 401 [2021-11-23 14:11:13,012 INFO L226 Difference]: Without dead ends: 196 [2021-11-23 14:11:13,016 INFO L932 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 [2021-11-23 14:11:13,020 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:13,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:11:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-23 14:11:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-11-23 14:11:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.3578947368421053) internal successors, (258), 195 states have internal predecessors, (258), 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) [2021-11-23 14:11:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-11-23 14:11:13,071 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 62 [2021-11-23 14:11:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:13,072 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-11-23 14:11:13,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-23 14:11:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-11-23 14:11:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 14:11:13,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:13,075 INFO L514 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] [2021-11-23 14:11:13,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:11:13,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash 312696489, now seen corresponding path program 1 times [2021-11-23 14:11:13,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:13,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505210184] [2021-11-23 14:11:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:13,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:13,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:11:13,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679284604] [2021-11-23 14:11:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:13,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:13,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:13,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:13,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:11:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:13,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 14:11:13,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:13,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:11:13,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:13,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505210184] [2021-11-23 14:11:13,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:11:13,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679284604] [2021-11-23 14:11:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679284604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:13,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:13,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:13,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470448472] [2021-11-23 14:11:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:13,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:11:13,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:11:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:11:13,941 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-23 14:11:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:14,151 INFO L93 Difference]: Finished difference Result 281 states and 372 transitions. [2021-11-23 14:11:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:11:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-23 14:11:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:14,155 INFO L225 Difference]: With dead ends: 281 [2021-11-23 14:11:14,155 INFO L226 Difference]: Without dead ends: 198 [2021-11-23 14:11:14,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:11:14,157 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 543 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:14,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 597 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:11:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-23 14:11:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2021-11-23 14:11:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.3473684210526315) internal successors, (256), 195 states have internal predecessors, (256), 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) [2021-11-23 14:11:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 256 transitions. [2021-11-23 14:11:14,191 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 256 transitions. Word has length 65 [2021-11-23 14:11:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:14,192 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 256 transitions. [2021-11-23 14:11:14,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-23 14:11:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 256 transitions. [2021-11-23 14:11:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 14:11:14,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:14,196 INFO L514 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] [2021-11-23 14:11:14,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:11:14,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:14,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:14,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1103415697, now seen corresponding path program 1 times [2021-11-23 14:11:14,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:14,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873377774] [2021-11-23 14:11:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:14,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:14,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:11:14,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84710086] [2021-11-23 14:11:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:14,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:14,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:14,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:11:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:15,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 14:11:15,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:15,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:11:15,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:15,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873377774] [2021-11-23 14:11:15,166 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:11:15,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84710086] [2021-11-23 14:11:15,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84710086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:15,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:15,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:15,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66044272] [2021-11-23 14:11:15,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:15,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:11:15,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:11:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:15,169 INFO L87 Difference]: Start difference. First operand 196 states and 256 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2021-11-23 14:11:15,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:15,265 INFO L93 Difference]: Finished difference Result 550 states and 724 transitions. [2021-11-23 14:11:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:11:15,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 [2021-11-23 14:11:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:15,270 INFO L225 Difference]: With dead ends: 550 [2021-11-23 14:11:15,270 INFO L226 Difference]: Without dead ends: 376 [2021-11-23 14:11:15,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:11:15,280 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 464 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:15,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1417 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:11:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-23 14:11:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2021-11-23 14:11:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.336734693877551) internal successors, (262), 201 states have internal predecessors, (262), 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) [2021-11-23 14:11:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 262 transitions. [2021-11-23 14:11:15,306 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 262 transitions. Word has length 66 [2021-11-23 14:11:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:15,306 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 262 transitions. [2021-11-23 14:11:15,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2021-11-23 14:11:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 262 transitions. [2021-11-23 14:11:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 14:11:15,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:15,308 INFO L514 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] [2021-11-23 14:11:15,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:11:15,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 14:11:15,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -554146415, now seen corresponding path program 1 times [2021-11-23 14:11:15,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419516278] [2021-11-23 14:11:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:15,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:15,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419516278] [2021-11-23 14:11:15,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419516278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:15,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:15,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 14:11:15,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188210964] [2021-11-23 14:11:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:15,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 14:11:15,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 14:11:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:11:15,915 INFO L87 Difference]: Start difference. First operand 202 states and 262 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-11-23 14:11:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:16,412 INFO L93 Difference]: Finished difference Result 407 states and 531 transitions. [2021-11-23 14:11:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 14:11:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 70 [2021-11-23 14:11:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:16,414 INFO L225 Difference]: With dead ends: 407 [2021-11-23 14:11:16,414 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 14:11:16,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:11:16,416 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 703 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:16,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 1065 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 14:11:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 14:11:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 220. [2021-11-23 14:11:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.3271028037383177) internal successors, (284), 219 states have internal predecessors, (284), 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) [2021-11-23 14:11:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 284 transitions. [2021-11-23 14:11:16,441 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 284 transitions. Word has length 70 [2021-11-23 14:11:16,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:16,441 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 284 transitions. [2021-11-23 14:11:16,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-11-23 14:11:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 284 transitions. [2021-11-23 14:11:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 14:11:16,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:16,447 INFO L514 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] [2021-11-23 14:11:16,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:11:16,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash 875542541, now seen corresponding path program 1 times [2021-11-23 14:11:16,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:16,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966098099] [2021-11-23 14:11:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:16,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:16,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:16,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966098099] [2021-11-23 14:11:16,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966098099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:16,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:16,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:11:16,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021330786] [2021-11-23 14:11:16,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:16,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:11:16,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:11:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:11:16,776 INFO L87 Difference]: Start difference. First operand 220 states and 284 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-23 14:11:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:16,846 INFO L93 Difference]: Finished difference Result 403 states and 525 transitions. [2021-11-23 14:11:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:11:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2021-11-23 14:11:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:16,849 INFO L225 Difference]: With dead ends: 403 [2021-11-23 14:11:16,849 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 14:11:16,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:11:16,850 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 226 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:16,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 462 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:11:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 14:11:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 14:11:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.3066037735849056) internal successors, (277), 217 states have internal predecessors, (277), 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) [2021-11-23 14:11:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 277 transitions. [2021-11-23 14:11:16,864 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 277 transitions. Word has length 70 [2021-11-23 14:11:16,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:16,865 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 277 transitions. [2021-11-23 14:11:16,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-23 14:11:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 277 transitions. [2021-11-23 14:11:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 14:11:16,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:16,866 INFO L514 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] [2021-11-23 14:11:16,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:11:16,867 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:16,867 INFO L85 PathProgramCache]: Analyzing trace with hash -162792069, now seen corresponding path program 1 times [2021-11-23 14:11:16,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:16,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604521534] [2021-11-23 14:11:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:16,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:17,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604521534] [2021-11-23 14:11:17,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604521534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:17,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:17,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:17,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119969390] [2021-11-23 14:11:17,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:17,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:11:17,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:11:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:17,054 INFO L87 Difference]: Start difference. First operand 218 states and 277 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-23 14:11:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:17,511 INFO L93 Difference]: Finished difference Result 405 states and 518 transitions. [2021-11-23 14:11:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:11:17,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-23 14:11:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:17,514 INFO L225 Difference]: With dead ends: 405 [2021-11-23 14:11:17,514 INFO L226 Difference]: Without dead ends: 224 [2021-11-23 14:11:17,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:11:17,515 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 259 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:17,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 547 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 14:11:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-23 14:11:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 218. [2021-11-23 14:11:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.2735849056603774) internal successors, (270), 217 states have internal predecessors, (270), 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) [2021-11-23 14:11:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 270 transitions. [2021-11-23 14:11:17,532 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 270 transitions. Word has length 74 [2021-11-23 14:11:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:17,532 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 270 transitions. [2021-11-23 14:11:17,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-23 14:11:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 270 transitions. [2021-11-23 14:11:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 14:11:17,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:17,534 INFO L514 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] [2021-11-23 14:11:17,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:11:17,534 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash 523765980, now seen corresponding path program 1 times [2021-11-23 14:11:17,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:17,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478431107] [2021-11-23 14:11:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:17,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:17,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:17,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478431107] [2021-11-23 14:11:17,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478431107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:17,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:17,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 14:11:17,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157284802] [2021-11-23 14:11:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:17,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 14:11:17,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 14:11:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:11:17,918 INFO L87 Difference]: Start difference. First operand 218 states and 270 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2021-11-23 14:11:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:18,329 INFO L93 Difference]: Finished difference Result 303 states and 379 transitions. [2021-11-23 14:11:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:11:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 [2021-11-23 14:11:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:18,331 INFO L225 Difference]: With dead ends: 303 [2021-11-23 14:11:18,332 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 14:11:18,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:11:18,333 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1008 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:18,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 686 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:11:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 14:11:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-23 14:11:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.2688679245283019) internal successors, (269), 217 states have internal predecessors, (269), 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) [2021-11-23 14:11:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 269 transitions. [2021-11-23 14:11:18,351 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 269 transitions. Word has length 76 [2021-11-23 14:11:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:18,351 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 269 transitions. [2021-11-23 14:11:18,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2021-11-23 14:11:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 269 transitions. [2021-11-23 14:11:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 14:11:18,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:18,355 INFO L514 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] [2021-11-23 14:11:18,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:11:18,355 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 900225409, now seen corresponding path program 1 times [2021-11-23 14:11:18,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:18,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21711125] [2021-11-23 14:11:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:18,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:18,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:18,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21711125] [2021-11-23 14:11:18,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21711125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:18,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:18,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 14:11:18,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975695426] [2021-11-23 14:11:18,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:18,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 14:11:18,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 14:11:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:11:18,812 INFO L87 Difference]: Start difference. First operand 218 states and 269 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 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) [2021-11-23 14:11:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:19,262 INFO L93 Difference]: Finished difference Result 276 states and 341 transitions. [2021-11-23 14:11:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:11:19,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 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 80 [2021-11-23 14:11:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:19,265 INFO L225 Difference]: With dead ends: 276 [2021-11-23 14:11:19,265 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 14:11:19,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:11:19,266 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 849 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:19,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 705 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:11:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 14:11:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-23 14:11:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.2641509433962264) internal successors, (268), 217 states have internal predecessors, (268), 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) [2021-11-23 14:11:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 268 transitions. [2021-11-23 14:11:19,304 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 268 transitions. Word has length 80 [2021-11-23 14:11:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:19,306 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 268 transitions. [2021-11-23 14:11:19,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 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) [2021-11-23 14:11:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 268 transitions. [2021-11-23 14:11:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:11:19,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:19,307 INFO L514 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, 1, 1] [2021-11-23 14:11:19,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:11:19,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1607773165, now seen corresponding path program 1 times [2021-11-23 14:11:19,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:19,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489053803] [2021-11-23 14:11:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:19,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:19,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:19,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489053803] [2021-11-23 14:11:19,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489053803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:19,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:19,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:11:19,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363088681] [2021-11-23 14:11:19,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:19,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:11:19,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:11:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:11:19,509 INFO L87 Difference]: Start difference. First operand 218 states and 268 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-23 14:11:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:19,747 INFO L93 Difference]: Finished difference Result 318 states and 399 transitions. [2021-11-23 14:11:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:11:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 [2021-11-23 14:11:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:19,750 INFO L225 Difference]: With dead ends: 318 [2021-11-23 14:11:19,750 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 14:11:19,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:11:19,751 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:19,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 613 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:11:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 14:11:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 14:11:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.25) internal successors, (265), 217 states have internal predecessors, (265), 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) [2021-11-23 14:11:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 265 transitions. [2021-11-23 14:11:19,770 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 265 transitions. Word has length 82 [2021-11-23 14:11:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:19,770 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 265 transitions. [2021-11-23 14:11:19,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-23 14:11:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 265 transitions. [2021-11-23 14:11:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:11:19,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:19,772 INFO L514 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, 1, 1] [2021-11-23 14:11:19,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:11:19,772 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:19,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2007135761, now seen corresponding path program 1 times [2021-11-23 14:11:19,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:19,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199352290] [2021-11-23 14:11:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:19,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:20,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:20,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199352290] [2021-11-23 14:11:20,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199352290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:20,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:20,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-23 14:11:20,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880416752] [2021-11-23 14:11:20,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:20,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 14:11:20,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 14:11:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-23 14:11:20,778 INFO L87 Difference]: Start difference. First operand 218 states and 265 transitions. Second operand has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 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) [2021-11-23 14:11:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:22,996 INFO L93 Difference]: Finished difference Result 388 states and 476 transitions. [2021-11-23 14:11:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 14:11:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 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 [2021-11-23 14:11:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:22,999 INFO L225 Difference]: With dead ends: 388 [2021-11-23 14:11:22,999 INFO L226 Difference]: Without dead ends: 260 [2021-11-23 14:11:23,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 14:11:23,002 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 327 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:23,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2618 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 14:11:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-23 14:11:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 238. [2021-11-23 14:11:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 237 states have internal predecessors, (287), 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) [2021-11-23 14:11:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2021-11-23 14:11:23,025 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 82 [2021-11-23 14:11:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2021-11-23 14:11:23,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 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) [2021-11-23 14:11:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2021-11-23 14:11:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:11:23,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:23,027 INFO L514 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, 1, 1] [2021-11-23 14:11:23,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 14:11:23,028 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 904917841, now seen corresponding path program 1 times [2021-11-23 14:11:23,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814115291] [2021-11-23 14:11:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:23,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:23,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:23,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814115291] [2021-11-23 14:11:23,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814115291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:23,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:23,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 14:11:23,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575732873] [2021-11-23 14:11:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:23,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 14:11:23,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 14:11:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:11:23,280 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2021-11-23 14:11:23,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:23,581 INFO L93 Difference]: Finished difference Result 354 states and 435 transitions. [2021-11-23 14:11:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:11:23,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 [2021-11-23 14:11:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:23,584 INFO L225 Difference]: With dead ends: 354 [2021-11-23 14:11:23,584 INFO L226 Difference]: Without dead ends: 238 [2021-11-23 14:11:23,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:11:23,585 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 948 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:23,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 517 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:11:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-23 14:11:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-11-23 14:11:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.228448275862069) internal successors, (285), 237 states have internal predecessors, (285), 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) [2021-11-23 14:11:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2021-11-23 14:11:23,605 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 82 [2021-11-23 14:11:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:23,606 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2021-11-23 14:11:23,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2021-11-23 14:11:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2021-11-23 14:11:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:11:23,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:23,607 INFO L514 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, 1, 1] [2021-11-23 14:11:23,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 14:11:23,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:23,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1004900463, now seen corresponding path program 1 times [2021-11-23 14:11:23,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:23,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750026461] [2021-11-23 14:11:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:23,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:23,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:11:23,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075475502] [2021-11-23 14:11:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:23,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:23,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:23,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:11:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:24,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 14:11:24,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:24,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:11:24,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:24,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750026461] [2021-11-23 14:11:24,387 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:11:24,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075475502] [2021-11-23 14:11:24,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075475502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:24,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:24,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:24,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384951710] [2021-11-23 14:11:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:24,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:11:24,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:11:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:24,389 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-23 14:11:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:24,480 INFO L93 Difference]: Finished difference Result 656 states and 787 transitions. [2021-11-23 14:11:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:11:24,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 [2021-11-23 14:11:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:24,483 INFO L225 Difference]: With dead ends: 656 [2021-11-23 14:11:24,483 INFO L226 Difference]: Without dead ends: 443 [2021-11-23 14:11:24,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:11:24,485 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 412 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:24,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1045 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:11:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-23 14:11:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 244. [2021-11-23 14:11:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 238 states have (on average 1.2226890756302522) internal successors, (291), 243 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) [2021-11-23 14:11:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 291 transitions. [2021-11-23 14:11:24,508 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 291 transitions. Word has length 82 [2021-11-23 14:11:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:24,509 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 291 transitions. [2021-11-23 14:11:24,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-23 14:11:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 291 transitions. [2021-11-23 14:11:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:11:24,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:24,510 INFO L514 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, 1, 1] [2021-11-23 14:11:24,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:11:24,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 14:11:24,726 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:24,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -581253741, now seen corresponding path program 1 times [2021-11-23 14:11:24,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:24,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091981368] [2021-11-23 14:11:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:24,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:24,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:11:24,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168821772] [2021-11-23 14:11:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:24,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:24,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:11:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:25,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 14:11:25,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:25,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:11:25,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091981368] [2021-11-23 14:11:25,422 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:11:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168821772] [2021-11-23 14:11:25,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168821772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:25,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:25,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:25,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091106282] [2021-11-23 14:11:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:25,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:11:25,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:11:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:25,425 INFO L87 Difference]: Start difference. First operand 244 states and 291 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-23 14:11:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:25,567 INFO L93 Difference]: Finished difference Result 452 states and 557 transitions. [2021-11-23 14:11:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:11:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 [2021-11-23 14:11:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:25,570 INFO L225 Difference]: With dead ends: 452 [2021-11-23 14:11:25,570 INFO L226 Difference]: Without dead ends: 321 [2021-11-23 14:11:25,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:11:25,571 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 97 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:25,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 861 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:11:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-23 14:11:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 208. [2021-11-23 14:11:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 202 states have (on average 1.2326732673267327) internal successors, (249), 207 states have internal predecessors, (249), 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) [2021-11-23 14:11:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2021-11-23 14:11:25,591 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 82 [2021-11-23 14:11:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:25,592 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2021-11-23 14:11:25,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-23 14:11:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2021-11-23 14:11:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 14:11:25,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:25,594 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-23 14:11:25,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:11:25,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 14:11:25,806 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 824198886, now seen corresponding path program 1 times [2021-11-23 14:11:25,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:25,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820582301] [2021-11-23 14:11:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:25,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:26,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820582301] [2021-11-23 14:11:26,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820582301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:26,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:26,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 14:11:26,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999750122] [2021-11-23 14:11:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:26,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 14:11:26,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:26,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 14:11:26,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:11:26,442 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2021-11-23 14:11:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:28,487 INFO L93 Difference]: Finished difference Result 455 states and 559 transitions. [2021-11-23 14:11:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 14:11:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 85 [2021-11-23 14:11:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:28,491 INFO L225 Difference]: With dead ends: 455 [2021-11-23 14:11:28,491 INFO L226 Difference]: Without dead ends: 360 [2021-11-23 14:11:28,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 14:11:28,493 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 842 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:28,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 2234 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 14:11:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-23 14:11:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 257. [2021-11-23 14:11:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 251 states have (on average 1.2111553784860558) internal successors, (304), 256 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) [2021-11-23 14:11:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2021-11-23 14:11:28,521 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 85 [2021-11-23 14:11:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:28,522 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2021-11-23 14:11:28,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2021-11-23 14:11:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2021-11-23 14:11:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 14:11:28,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:28,524 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 14:11:28,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 14:11:28,524 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1042354789, now seen corresponding path program 1 times [2021-11-23 14:11:28,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:28,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140027240] [2021-11-23 14:11:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:28,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:29,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140027240] [2021-11-23 14:11:29,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140027240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:11:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960692169] [2021-11-23 14:11:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:29,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:29,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:29,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:11:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:29,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2412 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 14:11:29,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:11:29,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:11:29,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960692169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:29,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 14:11:29,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2021-11-23 14:11:29,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324769539] [2021-11-23 14:11:29,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:11:29,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:11:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-23 14:11:29,888 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-23 14:11:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:29,975 INFO L93 Difference]: Finished difference Result 490 states and 580 transitions. [2021-11-23 14:11:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:11:29,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 86 [2021-11-23 14:11:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:29,978 INFO L225 Difference]: With dead ends: 490 [2021-11-23 14:11:29,979 INFO L226 Difference]: Without dead ends: 257 [2021-11-23 14:11:29,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-11-23 14:11:29,980 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 2 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:29,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 679 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:11:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-23 14:11:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 248. [2021-11-23 14:11:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.1983471074380165) internal successors, (290), 247 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) [2021-11-23 14:11:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 290 transitions. [2021-11-23 14:11:30,005 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 290 transitions. Word has length 86 [2021-11-23 14:11:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:30,005 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 290 transitions. [2021-11-23 14:11:30,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-23 14:11:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 290 transitions. [2021-11-23 14:11:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 14:11:30,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:30,007 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:11:30,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 14:11:30,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 14:11:30,230 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash 69711058, now seen corresponding path program 1 times [2021-11-23 14:11:30,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:30,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394327065] [2021-11-23 14:11:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:30,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:30,276 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:11:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878370937] [2021-11-23 14:11:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:30,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:30,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:30,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 14:11:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:30,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-23 14:11:30,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:31,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:31,076 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 22 treesize of output 7 [2021-11-23 14:11:31,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:31,082 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 22 treesize of output 7 [2021-11-23 14:11:31,594 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-23 14:11:31,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 115 [2021-11-23 14:11:31,622 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-23 14:11:31,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 114 treesize of output 106 [2021-11-23 14:11:31,656 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-23 14:11:31,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 93 [2021-11-23 14:11:31,680 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-23 14:11:31,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 92 treesize of output 84 [2021-11-23 14:11:31,995 INFO L354 Elim1Store]: treesize reduction 41, result has 16.3 percent of original size [2021-11-23 14:11:31,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 77 [2021-11-23 14:11:32,021 INFO L354 Elim1Store]: treesize reduction 29, result has 21.6 percent of original size [2021-11-23 14:11:32,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 51 [2021-11-23 14:11:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:11:32,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:11:32,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394327065] [2021-11-23 14:11:32,100 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:11:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878370937] [2021-11-23 14:11:32,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878370937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:32,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:32,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 14:11:32,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511891670] [2021-11-23 14:11:32,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:32,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 14:11:32,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 14:11:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:11:32,103 INFO L87 Difference]: Start difference. First operand 248 states and 290 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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) [2021-11-23 14:11:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:33,356 INFO L93 Difference]: Finished difference Result 421 states and 512 transitions. [2021-11-23 14:11:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 14:11:33,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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 91 [2021-11-23 14:11:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:33,360 INFO L225 Difference]: With dead ends: 421 [2021-11-23 14:11:33,360 INFO L226 Difference]: Without dead ends: 326 [2021-11-23 14:11:33,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-11-23 14:11:33,361 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 523 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:33,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1968 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 515 Invalid, 0 Unknown, 81 Unchecked, 0.7s Time] [2021-11-23 14:11:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-23 14:11:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 196. [2021-11-23 14:11:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.2210526315789474) internal successors, (232), 195 states have internal predecessors, (232), 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) [2021-11-23 14:11:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2021-11-23 14:11:33,389 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 91 [2021-11-23 14:11:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:33,389 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2021-11-23 14:11:33,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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) [2021-11-23 14:11:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2021-11-23 14:11:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 14:11:33,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:33,391 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:11:33,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 14:11:33,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:33,610 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:11:33,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash -52578388, now seen corresponding path program 1 times [2021-11-23 14:11:33,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:33,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152175007] [2021-11-23 14:11:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:33,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:33,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:11:33,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340536233] [2021-11-23 14:11:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:33,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:11:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:11:33,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:11:33,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 14:11:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:34,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 295 conjunts are in the unsatisfiable core [2021-11-23 14:11:34,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:11:34,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 14:11:35,475 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-23 14:11:35,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-23 14:11:35,912 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-23 14:11:35,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-23 14:11:36,319 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-23 14:11:36,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-23 14:11:37,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:37,330 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-23 14:11:37,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-23 14:11:37,824 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:11:37,838 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 119 treesize of output 91 [2021-11-23 14:11:37,859 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 0 case distinctions, treesize of input 102 treesize of output 98 [2021-11-23 14:11:37,938 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-23 14:11:37,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 189 treesize of output 206 [2021-11-23 14:11:46,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:46,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:46,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:46,506 INFO L354 Elim1Store]: treesize reduction 657, result has 14.0 percent of original size [2021-11-23 14:11:46,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 125 treesize of output 199 [2021-11-23 14:11:51,667 INFO L354 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2021-11-23 14:11:51,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 136 [2021-11-23 14:11:51,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 109 [2021-11-23 14:11:51,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2021-11-23 14:11:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:59,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:11:59,507 INFO L354 Elim1Store]: treesize reduction 302, result has 11.7 percent of original size [2021-11-23 14:11:59,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 90 treesize of output 108 [2021-11-23 14:12:06,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 122 [2021-11-23 14:12:06,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2021-11-23 14:12:06,886 INFO L354 Elim1Store]: treesize reduction 55, result has 16.7 percent of original size [2021-11-23 14:12:06,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 118 [2021-11-23 14:12:15,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:12:15,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:12:15,599 INFO L354 Elim1Store]: treesize reduction 240, result has 17.5 percent of original size [2021-11-23 14:12:15,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 105 treesize of output 136 [2021-11-23 14:12:20,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:12:20,487 INFO L354 Elim1Store]: treesize reduction 202, result has 15.8 percent of original size [2021-11-23 14:12:20,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 82 treesize of output 96 [2021-11-23 14:12:24,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:12:24,705 INFO L354 Elim1Store]: treesize reduction 236, result has 24.1 percent of original size [2021-11-23 14:12:24,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 87 treesize of output 136 [2021-11-23 14:13:18,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:18,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:18,415 INFO L354 Elim1Store]: treesize reduction 132, result has 42.4 percent of original size [2021-11-23 14:13:18,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 118 treesize of output 188 [2021-11-23 14:13:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,648 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 14:13:21,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 135 [2021-11-23 14:13:21,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,044 INFO L354 Elim1Store]: treesize reduction 551, result has 11.8 percent of original size [2021-11-23 14:13:22,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 247 treesize of output 306 [2021-11-23 14:13:22,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,082 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-23 14:13:22,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 326 treesize of output 290 [2021-11-23 14:13:22,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 39 [2021-11-23 14:13:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:13:24,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:13:24,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:24,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152175007] [2021-11-23 14:13:24,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:13:24,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340536233] [2021-11-23 14:13:24,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340536233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:24,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:24,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-23 14:13:24,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686725150] [2021-11-23 14:13:24,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:24,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-23 14:13:24,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:24,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-23 14:13:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=673, Unknown=2, NotChecked=0, Total=756 [2021-11-23 14:13:24,418 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 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) [2021-11-23 14:13:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:27,423 INFO L93 Difference]: Finished difference Result 539 states and 659 transitions. [2021-11-23 14:13:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 14:13:27,424 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 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 94 [2021-11-23 14:13:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:27,428 INFO L225 Difference]: With dead ends: 539 [2021-11-23 14:13:27,428 INFO L226 Difference]: Without dead ends: 435 [2021-11-23 14:13:27,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=122, Invalid=998, Unknown=2, NotChecked=0, Total=1122 [2021-11-23 14:13:27,430 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 412 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1009 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:27,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 2964 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 482 Invalid, 0 Unknown, 1009 Unchecked, 2.1s Time] [2021-11-23 14:13:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-23 14:13:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 240. [2021-11-23 14:13:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 239 states have internal predecessors, (279), 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) [2021-11-23 14:13:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 279 transitions. [2021-11-23 14:13:27,475 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 279 transitions. Word has length 94 [2021-11-23 14:13:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:27,476 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 279 transitions. [2021-11-23 14:13:27,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 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) [2021-11-23 14:13:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 279 transitions. [2021-11-23 14:13:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 14:13:27,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:27,478 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:27,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 14:13:27,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 14:13:27,692 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:13:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1847424559, now seen corresponding path program 1 times [2021-11-23 14:13:27,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992745923] [2021-11-23 14:13:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:27,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:27,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:13:27,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524919337] [2021-11-23 14:13:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:27,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:27,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:27,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:13:27,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fc67b9c-e5bb-4e41-9dbc-f721db0ee86e/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 14:13:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:29,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 274 conjunts are in the unsatisfiable core [2021-11-23 14:13:29,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:13:29,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 14:13:29,779 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-23 14:13:29,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-23 14:13:30,388 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-23 14:13:30,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-23 14:13:30,887 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-23 14:13:30,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-23 14:13:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:31,736 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-23 14:13:31,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-23 14:13:32,336 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 119 treesize of output 91 [2021-11-23 14:13:32,350 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 0 case distinctions, treesize of input 102 treesize of output 98 [2021-11-23 14:13:32,452 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-23 14:13:32,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 189 treesize of output 206 [2021-11-23 14:13:33,613 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:13:47,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:47,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:47,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:47,372 INFO L354 Elim1Store]: treesize reduction 144, result has 33.6 percent of original size [2021-11-23 14:13:47,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 93 treesize of output 145 [2021-11-23 14:13:48,501 INFO L354 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2021-11-23 14:13:48,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 89 [2021-11-23 14:13:48,536 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 14:13:48,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 82 [2021-11-23 14:13:48,593 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 14:13:48,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 59 [2021-11-23 14:13:55,825 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-23 14:13:55,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 108 [2021-11-23 14:13:55,856 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 14:13:55,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 89 [2021-11-23 14:13:55,884 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 14:13:55,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 66 [2021-11-23 14:14:17,694 INFO L354 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2021-11-23 14:14:17,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 126 [2021-11-23 14:14:17,724 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 14:14:17,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 115 [2021-11-23 14:14:17,758 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 14:14:17,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 107 [2021-11-23 14:14:21,428 INFO L354 Elim1Store]: treesize reduction 43, result has 46.9 percent of original size [2021-11-23 14:14:21,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 181 [2021-11-23 14:14:21,590 INFO L354 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2021-11-23 14:14:21,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 181 treesize of output 195 [2021-11-23 14:14:21,740 INFO L354 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2021-11-23 14:14:21,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 195 treesize of output 208 [2021-11-23 14:14:21,899 INFO L354 Elim1Store]: treesize reduction 62, result has 23.5 percent of original size [2021-11-23 14:14:21,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 207 [2021-11-23 14:14:26,983 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-23 14:14:26,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 27 [2021-11-23 14:14:33,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:14:33,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:14:33,726 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-23 14:14:33,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 132 treesize of output 113 [2021-11-23 14:14:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:34,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:14:44,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (|ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| Int) (v_DerPreprocessor_4 Int) (|v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| Int)) (let ((.cse6 (store (store (select |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12|) |ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 0) 0 v_DerPreprocessor_4))) (let ((.cse0 (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| .cse6) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_hash_iter_begin_~map#1.base|) |c_ULTIMATE.start_aws_hash_iter_begin_~map#1.offset|)) (+ 40 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_hash_iter_begin_~map#1.base|) |c_ULTIMATE.start_aws_hash_iter_begin_~map#1.offset|))))) (or (< 0 (mod .cse0 18446744073709551616)) (let ((.cse3 (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12|) |ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 0) 0 |c_ULTIMATE.start_aws_hash_iter_begin_~map#1.offset|) 32 v_DerPreprocessor_6)) (.cse7 (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12|) |ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 0) 0 |c_ULTIMATE.start_aws_hash_iter_begin_~map#1.base|) 32 v_DerPreprocessor_5))) (let ((.cse4 (select .cse7 0)) (.cse5 (select .cse3 0))) (let ((.cse1 (select (store |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| (store .cse6 32 .cse0)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| .cse7) .cse4) .cse5))) (.cse2 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| .cse3) .cse4) .cse5))) (<= (mod (select .cse1 (+ .cse2 40)) 18446744073709551616) (mod (select .cse1 (+ .cse2 56)) 18446744073709551616))))) (<= |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| |c_#StackHeapBarrier|))))) is different from false [2021-11-23 14:14:47,753 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (|ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| Int) (v_DerPreprocessor_4 Int) (|v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| Int)) (let ((.cse6 (store (store (select |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12|) |ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 0) 0 v_DerPreprocessor_4))) (let ((.cse0 (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| .cse6) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_hash_iter_begin_harness_~#map~0#1.base|) |c_ULTIMATE.start_aws_hash_iter_begin_harness_~#map~0#1.offset|)) (+ 40 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_hash_iter_begin_harness_~#map~0#1.base|) |c_ULTIMATE.start_aws_hash_iter_begin_harness_~#map~0#1.offset|))))) (or (<= |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| |c_#StackHeapBarrier|) (< 0 (mod .cse0 18446744073709551616)) (let ((.cse3 (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12|) |ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 0) 0 |c_ULTIMATE.start_aws_hash_iter_begin_harness_~#map~0#1.offset|) 32 v_DerPreprocessor_6)) (.cse7 (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12|) |ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset| 0) 0 |c_ULTIMATE.start_aws_hash_iter_begin_harness_~#map~0#1.base|) 32 v_DerPreprocessor_5))) (let ((.cse4 (select .cse7 0)) (.cse5 (select .cse3 0))) (let ((.cse1 (select (store |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| (store .cse6 32 .cse0)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| .cse7) .cse4) .cse5))) (.cse2 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base_12| .cse3) .cse4) .cse5))) (<= (mod (select .cse1 (+ 40 .cse2)) 18446744073709551616) (mod (select .cse1 (+ 56 .cse2)) 18446744073709551616))))))))) is different from false [2021-11-23 14:16:34,746 WARN L227 SmtUtils]: Spent 20.42s on a formula simplification. DAG size of input: 82 DAG size of output: 78 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 14:16:34,747 INFO L354 Elim1Store]: treesize reduction 554, result has 70.7 percent of original size [2021-11-23 14:16:34,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32116910548235236 treesize of output 31769363203865884