./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN --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 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:35:16,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:35:16,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:35:16,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:35:16,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:35:16,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:35:16,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:35:16,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:35:16,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:35:16,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:35:16,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:35:16,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:35:16,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:35:16,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:35:16,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:35:16,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:35:16,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:35:16,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:35:16,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:35:16,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:35:16,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:35:16,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:35:16,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:35:16,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:35:16,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:35:16,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:35:16,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:35:16,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:35:16,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:35:16,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:35:16,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:35:16,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:35:16,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:35:16,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:35:16,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:35:16,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:35:16,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:35:16,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:35:16,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:35:16,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:35:16,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:35:16,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 09:35:16,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:35:16,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:35:16,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:35:16,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:35:16,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:35:16,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:35:16,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:35:16,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:35:16,347 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:35:16,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:35:16,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:35:16,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:35:16,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:35:16,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:35:16,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:35:16,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:35:16,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:35:16,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:35:16,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:35:16,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:35:16,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:35:16,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:35:16,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:35:16,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:35:16,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:35:16,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:35:16,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:35:16,353 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:35:16,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:35:16,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:35:16,355 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_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb [2022-11-20 09:35:16,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:35:16,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:35:16,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:35:16,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:35:16,726 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:35:16,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2022-11-20 09:35:19,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:35:20,539 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:35:20,539 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2022-11-20 09:35:20,583 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/data/9cebf4a9a/f692171dbbc24ff58ce8fc97893a5cf7/FLAG76a6fb12f [2022-11-20 09:35:20,602 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/data/9cebf4a9a/f692171dbbc24ff58ce8fc97893a5cf7 [2022-11-20 09:35:20,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:35:20,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:35:20,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:35:20,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:35:20,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:35:20,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:20" (1/1) ... [2022-11-20 09:35:20,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65487bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:20, skipping insertion in model container [2022-11-20 09:35:20,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:20" (1/1) ... [2022-11-20 09:35:20,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:35:20,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:35:21,087 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2022-11-20 09:35:21,095 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2022-11-20 09:35:22,102 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 09:35:22,214 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,215 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,215 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,216 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,217 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,231 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,236 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,238 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,239 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,239 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 09:35:22,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 09:35:22,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 09:35:22,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 09:35:22,705 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 09:35:22,706 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 09:35:22,707 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 09:35:22,708 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 09:35:22,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 09:35:22,710 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 09:35:22,876 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,885 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,946 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,947 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:22,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:35:22,986 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:35:23,000 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2022-11-20 09:35:23,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2022-11-20 09:35:23,051 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 09:35:23,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,089 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,090 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,095 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,096 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,114 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,115 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,117 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,124 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,126 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,132 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 09:35:23,209 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 09:35:23,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 09:35:23,211 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 09:35:23,213 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 09:35:23,216 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 09:35:23,217 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 09:35:23,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 09:35:23,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 09:35:23,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 09:35:23,294 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,311 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,359 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,369 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 09:35:23,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:35:23,706 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:35:23,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23 WrapperNode [2022-11-20 09:35:23,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:35:23,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:35:23,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:35:23,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:35:23,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:23,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:23,929 INFO L138 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 654 [2022-11-20 09:35:23,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:35:23,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:35:23,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:35:23,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:35:23,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:23,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:23,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:23,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:24,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:24,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:24,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:24,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:24,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:35:24,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:35:24,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:35:24,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:35:24,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (1/1) ... [2022-11-20 09:35:24,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:35:24,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:24,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:35:24,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:35:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:35:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 09:35:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 09:35:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 09:35:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 09:35:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 09:35:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 09:35:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:35:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 09:35:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 09:35:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 09:35:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 09:35:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:35:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:35:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:35:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 09:35:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 09:35:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:35:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:35:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 09:35:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 09:35:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 09:35:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 09:35:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 09:35:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 09:35:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 09:35:24,265 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 09:35:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 09:35:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 09:35:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 09:35:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 09:35:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 09:35:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 09:35:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:35:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:35:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:35:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 09:35:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 09:35:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 09:35:24,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 09:35:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:35:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 09:35:24,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 09:35:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:35:24,780 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:35:24,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:35:26,299 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:35:26,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:35:26,309 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:35:26,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:26 BoogieIcfgContainer [2022-11-20 09:35:26,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:35:26,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:35:26,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:35:26,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:35:26,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:35:20" (1/3) ... [2022-11-20 09:35:26,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fddbf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:26, skipping insertion in model container [2022-11-20 09:35:26,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:23" (2/3) ... [2022-11-20 09:35:26,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fddbf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:26, skipping insertion in model container [2022-11-20 09:35:26,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:26" (3/3) ... [2022-11-20 09:35:26,323 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2022-11-20 09:35:26,347 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:35:26,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:35:26,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:35:26,421 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f3f1412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:35:26,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:35:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 108 states have (on average 1.212962962962963) internal successors, (131), 109 states have internal predecessors, (131), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-20 09:35:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 09:35:26,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:26,442 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:26,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445885, now seen corresponding path program 1 times [2022-11-20 09:35:26,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:26,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505404428] [2022-11-20 09:35:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:35:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:35:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:35:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 09:35:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 09:35:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:35:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 09:35:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:35:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 09:35:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:35:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 09:35:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 09:35:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:35:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 09:35:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 09:35:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 09:35:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 09:35:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 09:35:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 09:35:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:27,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505404428] [2022-11-20 09:35:27,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505404428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:27,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:27,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:35:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705738013] [2022-11-20 09:35:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:27,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:35:27,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:35:27,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:35:27,928 INFO L87 Difference]: Start difference. First operand has 178 states, 108 states have (on average 1.212962962962963) internal successors, (131), 109 states have internal predecessors, (131), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:35:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:28,784 INFO L93 Difference]: Finished difference Result 370 states and 533 transitions. [2022-11-20 09:35:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:35:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-11-20 09:35:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:28,802 INFO L225 Difference]: With dead ends: 370 [2022-11-20 09:35:28,803 INFO L226 Difference]: Without dead ends: 190 [2022-11-20 09:35:28,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:35:28,812 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 117 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:28,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 231 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:35:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-20 09:35:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2022-11-20 09:35:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 09:35:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2022-11-20 09:35:28,942 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 124 [2022-11-20 09:35:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:28,943 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2022-11-20 09:35:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:35:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2022-11-20 09:35:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 09:35:28,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:28,955 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:28,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:35:28,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:28,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:28,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1730209477, now seen corresponding path program 1 times [2022-11-20 09:35:28,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:28,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701125680] [2022-11-20 09:35:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:35:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:35:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:35:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 09:35:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 09:35:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:35:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 09:35:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:35:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 09:35:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:35:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 09:35:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 09:35:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:35:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 09:35:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 09:35:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 09:35:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 09:35:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 09:35:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-20 09:35:29,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701125680] [2022-11-20 09:35:29,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701125680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:29,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391839122] [2022-11-20 09:35:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:29,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:29,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:29,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:29,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:35:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:30,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:35:30,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-20 09:35:30,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:30,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391839122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:30,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:35:30,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 09:35:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054023007] [2022-11-20 09:35:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:30,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:35:30,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:35:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:35:30,602 INFO L87 Difference]: Start difference. First operand 169 states and 220 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 09:35:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:31,068 INFO L93 Difference]: Finished difference Result 311 states and 411 transitions. [2022-11-20 09:35:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:35:31,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2022-11-20 09:35:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:31,076 INFO L225 Difference]: With dead ends: 311 [2022-11-20 09:35:31,077 INFO L226 Difference]: Without dead ends: 171 [2022-11-20 09:35:31,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:35:31,081 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 229 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:31,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 618 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:35:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-20 09:35:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-20 09:35:31,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (55), 50 states have call predecessors, (55), 50 states have call successors, (55) [2022-11-20 09:35:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2022-11-20 09:35:31,133 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 124 [2022-11-20 09:35:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:31,135 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2022-11-20 09:35:31,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 09:35:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2022-11-20 09:35:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 09:35:31,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:31,146 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:31,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:31,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:31,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1300515237, now seen corresponding path program 1 times [2022-11-20 09:35:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:31,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403103335] [2022-11-20 09:35:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:31,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:31,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:31,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520810409] [2022-11-20 09:35:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:31,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:31,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:31,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:31,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:35:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:32,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:35:32,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-20 09:35:32,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:32,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:32,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403103335] [2022-11-20 09:35:32,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:32,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520810409] [2022-11-20 09:35:32,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520810409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:32,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:32,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:35:32,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788768558] [2022-11-20 09:35:32,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:32,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:35:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:35:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:35:32,283 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 09:35:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:32,745 INFO L93 Difference]: Finished difference Result 279 states and 368 transitions. [2022-11-20 09:35:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:35:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2022-11-20 09:35:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:32,752 INFO L225 Difference]: With dead ends: 279 [2022-11-20 09:35:32,752 INFO L226 Difference]: Without dead ends: 171 [2022-11-20 09:35:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:35:32,757 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 245 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:32,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 747 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:35:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-20 09:35:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-20 09:35:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2022-11-20 09:35:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-11-20 09:35:32,792 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 154 [2022-11-20 09:35:32,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:32,793 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-11-20 09:35:32,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 09:35:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-11-20 09:35:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 09:35:32,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:32,796 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:32,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:33,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1091978033, now seen corresponding path program 2 times [2022-11-20 09:35:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:33,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900210300] [2022-11-20 09:35:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:33,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:33,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079173041] [2022-11-20 09:35:33,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:35:33,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:33,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:33,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:33,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:35:33,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:35:33,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:33,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:35:34,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-20 09:35:34,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:34,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900210300] [2022-11-20 09:35:34,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079173041] [2022-11-20 09:35:34,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079173041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:34,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:34,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:35:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477928768] [2022-11-20 09:35:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:34,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:35:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:35:34,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:35:34,263 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 09:35:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:34,881 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2022-11-20 09:35:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:35:34,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 169 [2022-11-20 09:35:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:34,884 INFO L225 Difference]: With dead ends: 268 [2022-11-20 09:35:34,884 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 09:35:34,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:35:34,886 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 246 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:34,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1007 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:35:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 09:35:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-20 09:35:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 102 states have internal predecessors, (117), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 09:35:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 219 transitions. [2022-11-20 09:35:34,908 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 219 transitions. Word has length 169 [2022-11-20 09:35:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:34,908 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 219 transitions. [2022-11-20 09:35:34,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 09:35:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 219 transitions. [2022-11-20 09:35:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 09:35:34,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:34,912 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:34,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:35,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:35,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1928427287, now seen corresponding path program 1 times [2022-11-20 09:35:35,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:35,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889895866] [2022-11-20 09:35:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:35,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974551042] [2022-11-20 09:35:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:35,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:35,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:35,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:35:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:36,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 09:35:36,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-20 09:35:36,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:36,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:36,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889895866] [2022-11-20 09:35:36,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:36,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974551042] [2022-11-20 09:35:36,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974551042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:36,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:36,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:35:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315754381] [2022-11-20 09:35:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:35:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:35:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:35:36,304 INFO L87 Difference]: Start difference. First operand 169 states and 219 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 09:35:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:36,529 INFO L93 Difference]: Finished difference Result 329 states and 436 transitions. [2022-11-20 09:35:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:35:36,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2022-11-20 09:35:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:36,532 INFO L225 Difference]: With dead ends: 329 [2022-11-20 09:35:36,533 INFO L226 Difference]: Without dead ends: 226 [2022-11-20 09:35:36,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:36,534 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 50 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:36,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1650 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:35:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-20 09:35:36,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2022-11-20 09:35:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 114 states have internal predecessors, (131), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 56 states have call successors, (57) [2022-11-20 09:35:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2022-11-20 09:35:36,560 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 199 [2022-11-20 09:35:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:36,561 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2022-11-20 09:35:36,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 09:35:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2022-11-20 09:35:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 09:35:36,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:36,566 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:36,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:36,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1634572583, now seen corresponding path program 1 times [2022-11-20 09:35:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:36,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014006734] [2022-11-20 09:35:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:36,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:36,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:36,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308963280] [2022-11-20 09:35:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:36,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:36,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:36,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:35:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:37,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:35:37,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-20 09:35:37,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:37,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:37,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014006734] [2022-11-20 09:35:37,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:37,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308963280] [2022-11-20 09:35:37,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308963280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:37,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:37,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:35:37,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512893260] [2022-11-20 09:35:37,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:37,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:35:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:35:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:35:37,987 INFO L87 Difference]: Start difference. First operand 188 states and 246 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 09:35:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:38,254 INFO L93 Difference]: Finished difference Result 339 states and 451 transitions. [2022-11-20 09:35:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:35:38,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2022-11-20 09:35:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:38,258 INFO L225 Difference]: With dead ends: 339 [2022-11-20 09:35:38,258 INFO L226 Difference]: Without dead ends: 230 [2022-11-20 09:35:38,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:35:38,260 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 46 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:38,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1196 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:35:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-20 09:35:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 194. [2022-11-20 09:35:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 116 states have (on average 1.146551724137931) internal successors, (133), 117 states have internal predecessors, (133), 61 states have call successors, (61), 16 states have call predecessors, (61), 16 states have return successors, (60), 60 states have call predecessors, (60), 59 states have call successors, (60) [2022-11-20 09:35:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 254 transitions. [2022-11-20 09:35:38,288 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 254 transitions. Word has length 199 [2022-11-20 09:35:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:38,289 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 254 transitions. [2022-11-20 09:35:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 09:35:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 254 transitions. [2022-11-20 09:35:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 09:35:38,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:38,293 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:38,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:38,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1629353815, now seen corresponding path program 1 times [2022-11-20 09:35:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:38,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588147536] [2022-11-20 09:35:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:38,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:38,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020598646] [2022-11-20 09:35:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:38,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:38,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:38,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:35:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:39,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:35:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 09:35:39,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:35:39,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588147536] [2022-11-20 09:35:39,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020598646] [2022-11-20 09:35:39,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020598646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:39,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:39,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:35:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305016506] [2022-11-20 09:35:39,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:39,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:35:39,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:35:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:35:39,628 INFO L87 Difference]: Start difference. First operand 194 states and 254 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 09:35:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:39,813 INFO L93 Difference]: Finished difference Result 297 states and 385 transitions. [2022-11-20 09:35:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:35:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 199 [2022-11-20 09:35:39,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:39,816 INFO L225 Difference]: With dead ends: 297 [2022-11-20 09:35:39,816 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 09:35:39,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:35:39,818 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 2 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:39,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 768 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:35:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 09:35:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-20 09:35:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 102 states have internal predecessors, (114), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 09:35:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2022-11-20 09:35:39,842 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 199 [2022-11-20 09:35:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:39,843 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2022-11-20 09:35:39,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 09:35:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2022-11-20 09:35:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 09:35:39,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:39,847 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:39,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:40,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 140333254, now seen corresponding path program 1 times [2022-11-20 09:35:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:40,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652030207] [2022-11-20 09:35:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:40,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:40,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104346875] [2022-11-20 09:35:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:40,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:40,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:40,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:40,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:35:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 369 conjunts are in the unsatisfiable core [2022-11-20 09:35:41,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:41,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:35:41,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 09:35:41,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 09:35:42,268 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_54| Int) (v_ArrVal_898 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_54| v_ArrVal_898)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_54|) 0))) (exists ((v_ArrVal_899 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_899) |c_#memory_int|))) is different from true [2022-11-20 09:35:42,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:35:42,635 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 09:35:42,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2022-11-20 09:35:42,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 09:35:42,897 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_901 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_901))) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-11-20 09:35:42,921 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_901 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_901)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-11-20 09:35:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:42,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 09:35:43,050 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 09:35:43,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 09:35:44,318 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-20 09:35:44,318 INFO L350 Elim1Store]: Elim1 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 12 case distinctions, treesize of input 42 treesize of output 69 [2022-11-20 09:35:44,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:35:49,537 INFO L321 Elim1Store]: treesize reduction 448, result has 32.0 percent of original size [2022-11-20 09:35:49,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 189 treesize of output 408 [2022-11-20 09:35:49,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:49,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:49,622 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 172 [2022-11-20 09:36:47,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:47,777 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:36:47,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:36:49,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:36:50,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:50,139 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:36:50,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:36:52,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:36:52,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:53,007 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:36:53,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:36:55,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:36:55,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:55,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:36:58,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:36:58,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:58,418 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:00,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:00,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:00,702 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:02,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:03,101 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:03,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:05,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:05,539 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:05,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:07,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:08,148 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:08,148 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:10,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:10,539 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 09:37:10,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 256 treesize of output 243 [2022-11-20 09:37:11,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-20 09:37:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:13,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-11-20 09:37:18,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:18,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:18,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-11-20 09:37:18,538 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 09:37:18,539 INFO L350 Elim1Store]: Elim1 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 250 treesize of output 237 [2022-11-20 09:37:20,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-20 09:37:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:20,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:20,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-11-20 09:37:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:25,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-11-20 09:37:29,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:30,476 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-20 09:37:30,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 74 [2022-11-20 09:37:32,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:32,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:33,107 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-20 09:37:33,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 74 [2022-11-20 09:37:35,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:35,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:35,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,951 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:35,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:36,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:40,404 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 09:37:40,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 86 [2022-11-20 09:37:40,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-20 09:37:42,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:42,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:42,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-11-20 09:37:45,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:45,610 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 09:37:45,610 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 86 [2022-11-20 09:37:45,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-20 09:37:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:48,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:48,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-11-20 09:37:51,436 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:51,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:51,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:53,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:53,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:56,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:56,490 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:56,490 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:58,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:37:59,268 INFO L217 Elim1Store]: Index analysis took 130 ms [2022-11-20 09:37:59,286 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:37:59,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-20 09:37:59,308 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:39:12,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:39:15,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:39:17,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:39:32,646 INFO L321 Elim1Store]: treesize reduction 47, result has 17.5 percent of original size [2022-11-20 09:39:32,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 16 [2022-11-20 09:39:33,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:39:33,275 INFO L321 Elim1Store]: treesize reduction 89, result has 13.6 percent of original size [2022-11-20 09:39:33,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 25 [2022-11-20 09:39:37,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:37,711 INFO L321 Elim1Store]: treesize reduction 95, result has 12.8 percent of original size [2022-11-20 09:39:37,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 25 [2022-11-20 09:39:38,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:39:40,550 INFO L321 Elim1Store]: treesize reduction 86, result has 14.0 percent of original size [2022-11-20 09:39:40,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 51 treesize of output 25 [2022-11-20 09:39:43,186 INFO L321 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2022-11-20 09:39:43,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 16 [2022-11-20 09:39:45,601 INFO L321 Elim1Store]: treesize reduction 123, result has 0.8 percent of original size [2022-11-20 09:39:45,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 1 [2022-11-20 09:39:47,715 INFO L321 Elim1Store]: treesize reduction 102, result has 1.0 percent of original size [2022-11-20 09:39:47,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 1 [2022-11-20 09:39:49,958 INFO L321 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2022-11-20 09:39:49,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2022-11-20 09:39:52,192 INFO L321 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2022-11-20 09:39:52,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2022-11-20 09:39:52,593 INFO L321 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2022-11-20 09:39:52,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2022-11-20 09:39:52,697 INFO L321 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2022-11-20 09:39:52,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2022-11-20 09:39:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:54,967 INFO L321 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2022-11-20 09:39:54,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 1 [2022-11-20 09:39:57,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:57,211 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-20 09:39:57,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 1 [2022-11-20 09:39:59,552 INFO L321 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2022-11-20 09:39:59,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 1 [2022-11-20 09:40:03,122 INFO L217 Elim1Store]: Index analysis took 114 ms [2022-11-20 09:40:03,176 INFO L321 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2022-11-20 09:40:03,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 1 [2022-11-20 09:40:05,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:05,578 INFO L321 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2022-11-20 09:40:05,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 1 [2022-11-20 09:40:05,825 INFO L321 Elim1Store]: treesize reduction 77, result has 1.3 percent of original size [2022-11-20 09:40:05,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 426 treesize of output 382 [2022-11-20 09:40:06,036 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:40:06,091 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:40:09,643 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 09:40:09,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 9 [2022-11-20 09:40:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:11,973 INFO L321 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2022-11-20 09:40:11,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 1 [2022-11-20 09:40:14,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:14,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:40:14,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2022-11-20 09:40:15,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:15,138 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-20 09:40:15,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 1 [2022-11-20 09:40:17,676 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-20 09:40:17,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 1 [2022-11-20 09:40:20,382 INFO L321 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2022-11-20 09:40:20,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2022-11-20 09:40:20,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:24,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:25,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:28,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:35,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:35,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:35,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:40:39,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:42,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:46,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:40:48,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:40:48,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:40:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:48,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:40:51,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:58,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:58,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:58,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:40:58,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:58,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:58,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:59,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:40:59,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 09:41:21,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:21,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:21,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:27,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:27,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:32,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:32,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:32,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:33,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:33,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:36,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:52,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:52,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:52,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:52,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:52,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:53,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:53,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:53,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:53,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:41:53,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:53,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 09:45:03,123 WARN L233 SmtUtils]: Spent 2.78m on a formula simplification. DAG size of input: 2130 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:45:28,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:45:28,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:45:28,788 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-20 09:45:28,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-20 09:45:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:45:28,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:45:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:45:28,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:45:28,982 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-20 09:45:28,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 76 [2022-11-20 09:46:04,507 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:46:19,022 INFO L321 Elim1Store]: treesize reduction 625, result has 18.7 percent of original size [2022-11-20 09:46:19,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 69 case distinctions, treesize of input 338 treesize of output 527 [2022-11-20 09:46:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 110 proven. 242 refuted. 3 times theorem prover too weak. 43 trivial. 12 not checked. [2022-11-20 09:46:20,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:46:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:46:33,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652030207] [2022-11-20 09:46:33,356 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:46:33,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104346875] [2022-11-20 09:46:33,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104346875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:46:33,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:46:33,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2022-11-20 09:46:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897580018] [2022-11-20 09:46:33,356 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 09:46:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 09:46:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:46:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 09:46:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=4139, Unknown=46, NotChecked=396, Total=4830 [2022-11-20 09:46:33,360 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 66 states, 54 states have (on average 2.314814814814815) internal successors, (125), 53 states have internal predecessors, (125), 20 states have call successors, (32), 12 states have call predecessors, (32), 22 states have return successors, (30), 18 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-20 09:47:11,309 WARN L233 SmtUtils]: Spent 20.08s on a formula simplification. DAG size of input: 106 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:47:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:13,098 INFO L93 Difference]: Finished difference Result 284 states and 377 transitions. [2022-11-20 09:47:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 09:47:13,099 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 54 states have (on average 2.314814814814815) internal successors, (125), 53 states have internal predecessors, (125), 20 states have call successors, (32), 12 states have call predecessors, (32), 22 states have return successors, (30), 18 states have call predecessors, (30), 19 states have call successors, (30) Word has length 210 [2022-11-20 09:47:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:13,102 INFO L225 Difference]: With dead ends: 284 [2022-11-20 09:47:13,102 INFO L226 Difference]: Without dead ends: 282 [2022-11-20 09:47:13,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 135 SyntacticMatches, 14 SemanticMatches, 83 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 263.2s TimeCoverageRelationStatistics Valid=363, Invalid=6241, Unknown=50, NotChecked=486, Total=7140 [2022-11-20 09:47:13,106 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 123 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3488 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:13,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 3098 Invalid, 4818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1223 Invalid, 0 Unknown, 3488 Unchecked, 1.7s Time] [2022-11-20 09:47:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-20 09:47:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 271. [2022-11-20 09:47:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 169 states have (on average 1.1301775147928994) internal successors, (191), 173 states have internal predecessors, (191), 74 states have call successors, (74), 27 states have call predecessors, (74), 27 states have return successors, (98), 70 states have call predecessors, (98), 72 states have call successors, (98) [2022-11-20 09:47:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 363 transitions. [2022-11-20 09:47:13,147 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 363 transitions. Word has length 210 [2022-11-20 09:47:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:13,148 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 363 transitions. [2022-11-20 09:47:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 54 states have (on average 2.314814814814815) internal successors, (125), 53 states have internal predecessors, (125), 20 states have call successors, (32), 12 states have call predecessors, (32), 22 states have return successors, (30), 18 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-20 09:47:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 363 transitions. [2022-11-20 09:47:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-20 09:47:13,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:47:13,153 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:47:13,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 09:47:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:13,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:47:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:47:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1681296906, now seen corresponding path program 1 times [2022-11-20 09:47:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:47:13,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790858109] [2022-11-20 09:47:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:47:13,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:47:13,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685469221] [2022-11-20 09:47:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:13,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:13,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:47:13,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:47:13,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:47:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:47:14,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 09:47:14,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-11-20 09:47:14,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:47:14,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:47:14,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790858109] [2022-11-20 09:47:14,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:47:14,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685469221] [2022-11-20 09:47:14,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685469221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:47:14,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:47:14,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 09:47:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91222327] [2022-11-20 09:47:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:47:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:47:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:47:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:47:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:47:14,491 INFO L87 Difference]: Start difference. First operand 271 states and 363 transitions. Second operand has 13 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 09:47:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:15,003 INFO L93 Difference]: Finished difference Result 397 states and 530 transitions. [2022-11-20 09:47:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:47:15,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 222 [2022-11-20 09:47:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:15,007 INFO L225 Difference]: With dead ends: 397 [2022-11-20 09:47:15,007 INFO L226 Difference]: Without dead ends: 285 [2022-11-20 09:47:15,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:47:15,009 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 12 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:15,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2531 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:47:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-20 09:47:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2022-11-20 09:47:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 177 states have (on average 1.1412429378531073) internal successors, (202), 181 states have internal predecessors, (202), 74 states have call successors, (74), 27 states have call predecessors, (74), 28 states have return successors, (98), 71 states have call predecessors, (98), 72 states have call successors, (98) [2022-11-20 09:47:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 374 transitions. [2022-11-20 09:47:15,048 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 374 transitions. Word has length 222 [2022-11-20 09:47:15,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:15,049 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 374 transitions. [2022-11-20 09:47:15,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 09:47:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 374 transitions. [2022-11-20 09:47:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-20 09:47:15,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:47:15,054 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:47:15,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 09:47:15,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:15,265 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:47:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:47:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash -191039626, now seen corresponding path program 2 times [2022-11-20 09:47:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:47:15,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196250457] [2022-11-20 09:47:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:15,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:47:15,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:47:15,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530956458] [2022-11-20 09:47:15,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:47:15,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:47:15,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:47:15,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:47:16,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:47:16,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:47:16,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 09:47:16,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:47:16,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:47:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:47:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196250457] [2022-11-20 09:47:16,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:47:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530956458] [2022-11-20 09:47:16,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530956458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:47:16,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:47:16,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 09:47:16,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897933586] [2022-11-20 09:47:16,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:47:16,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:47:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:47:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:47:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:47:16,374 INFO L87 Difference]: Start difference. First operand 280 states and 374 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:47:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:16,824 INFO L93 Difference]: Finished difference Result 403 states and 537 transitions. [2022-11-20 09:47:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:47:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 222 [2022-11-20 09:47:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:16,828 INFO L225 Difference]: With dead ends: 403 [2022-11-20 09:47:16,828 INFO L226 Difference]: Without dead ends: 280 [2022-11-20 09:47:16,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:47:16,830 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 11 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:16,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2264 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:47:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-20 09:47:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-20 09:47:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 177 states have (on average 1.1412429378531073) internal successors, (202), 181 states have internal predecessors, (202), 74 states have call successors, (74), 27 states have call predecessors, (74), 28 states have return successors, (95), 71 states have call predecessors, (95), 72 states have call successors, (95) [2022-11-20 09:47:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 371 transitions. [2022-11-20 09:47:16,868 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 371 transitions. Word has length 222 [2022-11-20 09:47:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:16,869 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 371 transitions. [2022-11-20 09:47:16,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 09:47:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 371 transitions. [2022-11-20 09:47:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 09:47:16,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:47:16,872 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:47:16,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:47:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:47:17,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:47:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:47:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash 979366916, now seen corresponding path program 1 times [2022-11-20 09:47:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:47:17,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533420169] [2022-11-20 09:47:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:47:17,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:47:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787044981] [2022-11-20 09:47:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:47:17,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:47:17,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:47:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:47:18,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:47:18,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 09:47:18,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:47:18,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:47:18,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533420169] [2022-11-20 09:47:18,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:47:18,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787044981] [2022-11-20 09:47:18,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787044981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:47:18,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:47:18,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:47:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883719425] [2022-11-20 09:47:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:47:18,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:47:18,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:47:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:47:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:47:18,048 INFO L87 Difference]: Start difference. First operand 280 states and 371 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:47:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:18,110 INFO L93 Difference]: Finished difference Result 538 states and 736 transitions. [2022-11-20 09:47:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:47:18,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2022-11-20 09:47:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:18,113 INFO L225 Difference]: With dead ends: 538 [2022-11-20 09:47:18,114 INFO L226 Difference]: Without dead ends: 295 [2022-11-20 09:47:18,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:47:18,116 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 7 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:18,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 640 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:47:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-20 09:47:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 286. [2022-11-20 09:47:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 183 states have (on average 1.1366120218579234) internal successors, (208), 187 states have internal predecessors, (208), 74 states have call successors, (74), 27 states have call predecessors, (74), 28 states have return successors, (95), 71 states have call predecessors, (95), 72 states have call successors, (95) [2022-11-20 09:47:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 377 transitions. [2022-11-20 09:47:18,148 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 377 transitions. Word has length 210 [2022-11-20 09:47:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:18,149 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 377 transitions. [2022-11-20 09:47:18,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:47:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 377 transitions. [2022-11-20 09:47:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 09:47:18,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:47:18,151 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:47:18,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:47:18,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:18,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:47:18,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:47:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1164949472, now seen corresponding path program 1 times [2022-11-20 09:47:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:47:18,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469771436] [2022-11-20 09:47:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:47:18,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:47:18,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767608880] [2022-11-20 09:47:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:18,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:47:18,462 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:47:18,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:47:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:47:19,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-20 09:47:19,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:20,060 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1514 Int) (v_ArrVal_1513 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1514))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1513))))) is different from true [2022-11-20 09:47:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:47:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:47:21,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-11-20 09:47:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:47:21,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:47:21,878 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 09:47:21,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 09:47:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 304 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 09:47:21,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:47:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:47:22,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469771436] [2022-11-20 09:47:22,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:47:22,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767608880] [2022-11-20 09:47:22,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767608880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:47:22,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:47:22,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-20 09:47:22,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45453581] [2022-11-20 09:47:22,487 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 09:47:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:47:22,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:47:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:47:22,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=277, Unknown=17, NotChecked=34, Total=380 [2022-11-20 09:47:22,489 INFO L87 Difference]: Start difference. First operand 286 states and 377 transitions. Second operand has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 8 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-20 09:47:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:24,783 INFO L93 Difference]: Finished difference Result 519 states and 737 transitions. [2022-11-20 09:47:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:47:24,784 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 8 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 212 [2022-11-20 09:47:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:24,788 INFO L225 Difference]: With dead ends: 519 [2022-11-20 09:47:24,788 INFO L226 Difference]: Without dead ends: 393 [2022-11-20 09:47:24,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 264 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=85, Invalid=453, Unknown=18, NotChecked=44, Total=600 [2022-11-20 09:47:24,790 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 123 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1099 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:24,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 994 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1289 Invalid, 0 Unknown, 1099 Unchecked, 1.9s Time] [2022-11-20 09:47:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-20 09:47:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 318. [2022-11-20 09:47:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 205 states have (on average 1.1317073170731706) internal successors, (232), 214 states have internal predecessors, (232), 78 states have call successors, (78), 29 states have call predecessors, (78), 34 states have return successors, (126), 74 states have call predecessors, (126), 76 states have call successors, (126) [2022-11-20 09:47:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 436 transitions. [2022-11-20 09:47:24,863 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 436 transitions. Word has length 212 [2022-11-20 09:47:24,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:24,864 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 436 transitions. [2022-11-20 09:47:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 8 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-20 09:47:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 436 transitions. [2022-11-20 09:47:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-20 09:47:24,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:47:24,867 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:47:24,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:47:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:25,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:47:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:47:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -388099232, now seen corresponding path program 1 times [2022-11-20 09:47:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:47:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057150722] [2022-11-20 09:47:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:47:25,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:47:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622335846] [2022-11-20 09:47:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:47:25,170 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:47:25,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:47:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:47:25,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-20 09:47:25,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:26,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 09:47:26,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 09:47:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 257 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-20 09:47:26,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:47:27,703 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 09:47:27,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-20 09:47:27,728 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-20 09:47:27,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-20 09:47:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 45 proven. 21 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-20 09:47:27,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:47:27,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057150722] [2022-11-20 09:47:27,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:47:27,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622335846] [2022-11-20 09:47:27,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622335846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:47:27,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:47:27,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 28 [2022-11-20 09:47:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283205346] [2022-11-20 09:47:27,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:47:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 09:47:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:47:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 09:47:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-11-20 09:47:27,981 INFO L87 Difference]: Start difference. First operand 318 states and 436 transitions. Second operand has 28 states, 25 states have (on average 4.76) internal successors, (119), 23 states have internal predecessors, (119), 8 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 7 states have call successors, (40) [2022-11-20 09:47:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:47:30,853 INFO L93 Difference]: Finished difference Result 564 states and 798 transitions. [2022-11-20 09:47:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 09:47:30,854 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.76) internal successors, (119), 23 states have internal predecessors, (119), 8 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 7 states have call successors, (40) Word has length 216 [2022-11-20 09:47:30,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:47:30,858 INFO L225 Difference]: With dead ends: 564 [2022-11-20 09:47:30,858 INFO L226 Difference]: Without dead ends: 414 [2022-11-20 09:47:30,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 405 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 09:47:30,860 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 111 mSDsluCounter, 5140 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:47:30,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5382 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1845 Invalid, 0 Unknown, 90 Unchecked, 2.1s Time] [2022-11-20 09:47:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-20 09:47:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 331. [2022-11-20 09:47:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 215 states have (on average 1.1209302325581396) internal successors, (241), 222 states have internal predecessors, (241), 79 states have call successors, (79), 32 states have call predecessors, (79), 36 states have return successors, (125), 76 states have call predecessors, (125), 77 states have call successors, (125) [2022-11-20 09:47:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 445 transitions. [2022-11-20 09:47:30,910 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 445 transitions. Word has length 216 [2022-11-20 09:47:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:47:30,910 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 445 transitions. [2022-11-20 09:47:30,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.76) internal successors, (119), 23 states have internal predecessors, (119), 8 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 7 states have call successors, (40) [2022-11-20 09:47:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 445 transitions. [2022-11-20 09:47:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 09:47:30,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:47:30,913 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:47:30,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:47:31,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:47:31,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:47:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:47:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash 742924832, now seen corresponding path program 2 times [2022-11-20 09:47:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:47:31,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813529658] [2022-11-20 09:47:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:47:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:47:31,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:47:31,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366520419] [2022-11-20 09:47:31,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:47:31,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:47:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:47:31,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:47:31,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:47:32,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:47:32,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:47:32,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 09:47:32,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:47:35,110 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_aws_array_list_length_~list.offset_BEFORE_CALL_9 Int)) (and (<= 0 v_aws_array_list_length_~list.offset_BEFORE_CALL_9) (exists ((v_aws_array_list_length_~list.base_BEFORE_CALL_9 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_array_list_length_~list.base_BEFORE_CALL_9) (+ v_aws_array_list_length_~list.offset_BEFORE_CALL_9 32)) 0))))) (exists ((v_aws_array_list_length_~list.offset_BEFORE_CALL_9 Int)) (and (<= 0 v_aws_array_list_length_~list.offset_BEFORE_CALL_9) (exists ((v_aws_array_list_length_~list.base_BEFORE_CALL_9 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_array_list_length_~list.base_BEFORE_CALL_9) (+ v_aws_array_list_length_~list.offset_BEFORE_CALL_9 32)) 0)))))) is different from true [2022-11-20 09:47:35,464 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_1843 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_1843)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1844 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_1844)))))) is different from true [2022-11-20 09:47:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 128 proven. 3 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-20 09:47:40,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:47:40,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:47:40,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813529658] [2022-11-20 09:47:40,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:47:40,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366520419] [2022-11-20 09:47:40,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366520419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:47:40,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:47:40,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-20 09:47:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388114395] [2022-11-20 09:47:40,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 09:47:40,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:47:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:47:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:47:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=316, Unknown=20, NotChecked=74, Total=462 [2022-11-20 09:47:40,707 INFO L87 Difference]: Start difference. First operand 331 states and 445 transitions. Second operand has 21 states, 20 states have (on average 4.15) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (29), 5 states have call predecessors, (29), 5 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) [2022-11-20 09:48:06,398 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:48:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:48:18,030 INFO L93 Difference]: Finished difference Result 569 states and 826 transitions. [2022-11-20 09:48:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 09:48:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.15) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (29), 5 states have call predecessors, (29), 5 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) Word has length 212 [2022-11-20 09:48:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:48:18,035 INFO L225 Difference]: With dead ends: 569 [2022-11-20 09:48:18,035 INFO L226 Difference]: Without dead ends: 450 [2022-11-20 09:48:18,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=137, Invalid=891, Unknown=36, NotChecked=126, Total=1190 [2022-11-20 09:48:18,042 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 142 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1519 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:48:18,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2058 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1977 Invalid, 0 Unknown, 1519 Unchecked, 2.5s Time] [2022-11-20 09:48:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-20 09:48:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 352. [2022-11-20 09:48:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 230 states have (on average 1.1217391304347826) internal successors, (258), 238 states have internal predecessors, (258), 82 states have call successors, (82), 34 states have call predecessors, (82), 39 states have return successors, (144), 79 states have call predecessors, (144), 80 states have call successors, (144) [2022-11-20 09:48:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 484 transitions. [2022-11-20 09:48:18,103 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 484 transitions. Word has length 212 [2022-11-20 09:48:18,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:48:18,103 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 484 transitions. [2022-11-20 09:48:18,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.15) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (29), 5 states have call predecessors, (29), 5 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) [2022-11-20 09:48:18,104 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 484 transitions. [2022-11-20 09:48:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 09:48:18,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:48:18,109 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:48:18,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:48:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:48:18,335 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:48:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:48:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -779793862, now seen corresponding path program 1 times [2022-11-20 09:48:18,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:48:18,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153715456] [2022-11-20 09:48:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:48:18,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:48:18,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813449245] [2022-11-20 09:48:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:18,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:48:18,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:48:18,415 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:48:18,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:48:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:48:19,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:48:19,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:48:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-20 09:48:19,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:48:19,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:48:19,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153715456] [2022-11-20 09:48:19,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:48:19,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813449245] [2022-11-20 09:48:19,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813449245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:48:19,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:48:19,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:48:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685073488] [2022-11-20 09:48:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:48:19,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:48:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:48:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:48:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:48:19,241 INFO L87 Difference]: Start difference. First operand 352 states and 484 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:48:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:48:19,548 INFO L93 Difference]: Finished difference Result 669 states and 937 transitions. [2022-11-20 09:48:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:48:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2022-11-20 09:48:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:48:19,552 INFO L225 Difference]: With dead ends: 669 [2022-11-20 09:48:19,552 INFO L226 Difference]: Without dead ends: 359 [2022-11-20 09:48:19,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:48:19,556 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 16 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:48:19,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 763 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:48:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-20 09:48:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2022-11-20 09:48:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 228 states have (on average 1.1140350877192982) internal successors, (254), 235 states have internal predecessors, (254), 82 states have call successors, (82), 34 states have call predecessors, (82), 38 states have return successors, (132), 79 states have call predecessors, (132), 80 states have call successors, (132) [2022-11-20 09:48:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 468 transitions. [2022-11-20 09:48:19,627 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 468 transitions. Word has length 218 [2022-11-20 09:48:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:48:19,627 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 468 transitions. [2022-11-20 09:48:19,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:48:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 468 transitions. [2022-11-20 09:48:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 09:48:19,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:48:19,630 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:48:19,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:48:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:48:19,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:48:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:48:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1551367783, now seen corresponding path program 1 times [2022-11-20 09:48:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:48:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224754087] [2022-11-20 09:48:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:48:19,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:48:19,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143920839] [2022-11-20 09:48:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:19,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:48:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:48:19,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:48:19,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:48:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:48:20,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 3022 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:48:20,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:48:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-20 09:48:20,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:48:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:48:20,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224754087] [2022-11-20 09:48:20,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:48:20,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143920839] [2022-11-20 09:48:20,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143920839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:48:20,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:48:20,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:48:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910150200] [2022-11-20 09:48:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:48:20,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:48:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:48:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:48:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:48:20,818 INFO L87 Difference]: Start difference. First operand 349 states and 468 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:48:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:48:21,117 INFO L93 Difference]: Finished difference Result 660 states and 914 transitions. [2022-11-20 09:48:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:48:21,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 224 [2022-11-20 09:48:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:48:21,121 INFO L225 Difference]: With dead ends: 660 [2022-11-20 09:48:21,121 INFO L226 Difference]: Without dead ends: 353 [2022-11-20 09:48:21,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:48:21,123 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 10 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:48:21,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 807 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:48:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-20 09:48:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2022-11-20 09:48:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 228 states have (on average 1.1008771929824561) internal successors, (251), 235 states have internal predecessors, (251), 82 states have call successors, (82), 34 states have call predecessors, (82), 38 states have return successors, (132), 79 states have call predecessors, (132), 80 states have call successors, (132) [2022-11-20 09:48:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 465 transitions. [2022-11-20 09:48:21,170 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 465 transitions. Word has length 224 [2022-11-20 09:48:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:48:21,171 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 465 transitions. [2022-11-20 09:48:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 09:48:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 465 transitions. [2022-11-20 09:48:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 09:48:21,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:48:21,174 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:48:21,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:48:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:48:21,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:48:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:48:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1016273272, now seen corresponding path program 1 times [2022-11-20 09:48:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:48:21,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410987339] [2022-11-20 09:48:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:21,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:48:21,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:48:21,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181713419] [2022-11-20 09:48:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:48:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:48:21,465 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:48:21,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:48:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:48:22,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 09:48:22,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:48:22,794 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2324 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2324))) is different from true [2022-11-20 09:48:22,963 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2324 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2324)))) is different from true [2022-11-20 09:48:23,028 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-20 09:48:23,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2022-11-20 09:48:23,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-20 09:48:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 221 proven. 12 refuted. 2 times theorem prover too weak. 162 trivial. 13 not checked. [2022-11-20 09:48:27,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:48:27,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:48:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410987339] [2022-11-20 09:48:27,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:48:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181713419] [2022-11-20 09:48:27,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181713419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:48:27,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:48:27,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-20 09:48:27,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511015900] [2022-11-20 09:48:27,913 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 09:48:27,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:48:27,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:48:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:48:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=347, Unknown=13, NotChecked=78, Total=506 [2022-11-20 09:48:27,918 INFO L87 Difference]: Start difference. First operand 349 states and 465 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (29), 9 states have call predecessors, (29), 7 states have call successors, (29) [2022-11-20 09:48:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:48:30,304 INFO L93 Difference]: Finished difference Result 546 states and 754 transitions. [2022-11-20 09:48:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:48:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (29), 9 states have call predecessors, (29), 7 states have call successors, (29) Word has length 218 [2022-11-20 09:48:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:48:30,309 INFO L225 Difference]: With dead ends: 546 [2022-11-20 09:48:30,309 INFO L226 Difference]: Without dead ends: 426 [2022-11-20 09:48:30,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 215 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=135, Invalid=611, Unknown=18, NotChecked=106, Total=870 [2022-11-20 09:48:30,311 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 138 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1557 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:48:30,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1065 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1337 Invalid, 0 Unknown, 1557 Unchecked, 2.0s Time] [2022-11-20 09:48:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-20 09:48:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 387. [2022-11-20 09:48:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 251 states have (on average 1.091633466135458) internal successors, (274), 258 states have internal predecessors, (274), 93 states have call successors, (93), 38 states have call predecessors, (93), 42 states have return successors, (164), 90 states have call predecessors, (164), 91 states have call successors, (164) [2022-11-20 09:48:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 531 transitions. [2022-11-20 09:48:30,372 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 531 transitions. Word has length 218 [2022-11-20 09:48:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:48:30,391 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 531 transitions. [2022-11-20 09:48:30,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (29), 9 states have call predecessors, (29), 7 states have call successors, (29) [2022-11-20 09:48:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 531 transitions. [2022-11-20 09:48:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-20 09:48:30,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:48:30,394 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:48:30,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:48:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:48:30,607 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:48:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:48:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1216644815, now seen corresponding path program 1 times [2022-11-20 09:48:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:48:30,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714855616] [2022-11-20 09:48:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:30,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:48:30,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:48:30,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221441118] [2022-11-20 09:48:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:30,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:48:30,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:48:30,691 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:48:30,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:48:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:48:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 09:48:31,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:48:31,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 09:48:31,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-20 09:48:31,974 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2498 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2498)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 09:48:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 09:48:40,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:48:40,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:48:40,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714855616] [2022-11-20 09:48:40,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:48:40,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221441118] [2022-11-20 09:48:40,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221441118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:48:40,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:48:40,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 09:48:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236673209] [2022-11-20 09:48:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:48:40,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:48:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:48:40,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:48:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-11-20 09:48:40,290 INFO L87 Difference]: Start difference. First operand 387 states and 531 transitions. Second operand has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 09:48:41,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:48:41,865 INFO L93 Difference]: Finished difference Result 710 states and 988 transitions. [2022-11-20 09:48:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:48:41,866 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) Word has length 226 [2022-11-20 09:48:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:48:41,869 INFO L225 Difference]: With dead ends: 710 [2022-11-20 09:48:41,869 INFO L226 Difference]: Without dead ends: 443 [2022-11-20 09:48:41,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2022-11-20 09:48:41,872 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 124 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1221 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:48:41,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1483 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1013 Invalid, 0 Unknown, 1221 Unchecked, 1.3s Time] [2022-11-20 09:48:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-20 09:48:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 390. [2022-11-20 09:48:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 253 states have (on average 1.0909090909090908) internal successors, (276), 260 states have internal predecessors, (276), 93 states have call successors, (93), 39 states have call predecessors, (93), 43 states have return successors, (163), 90 states have call predecessors, (163), 91 states have call successors, (163) [2022-11-20 09:48:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 532 transitions. [2022-11-20 09:48:41,935 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 532 transitions. Word has length 226 [2022-11-20 09:48:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:48:41,935 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 532 transitions. [2022-11-20 09:48:41,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 09:48:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 532 transitions. [2022-11-20 09:48:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-20 09:48:41,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:48:41,939 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:48:41,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:48:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:48:42,152 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:48:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:48:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1327938365, now seen corresponding path program 1 times [2022-11-20 09:48:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:48:42,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275804095] [2022-11-20 09:48:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:42,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:48:42,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:48:42,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115755917] [2022-11-20 09:48:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:48:42,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:48:42,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:48:42,241 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:48:42,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd2ce09-76f7-4571-95a5-98be4c2f8644/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 09:48:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:48:43,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-20 09:48:43,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:48:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:48:43,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 09:48:43,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 09:48:43,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 09:48:43,655 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:48:43,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:48:43,902 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2689 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2689))) is different from true [2022-11-20 09:48:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:48:44,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-20 09:48:44,409 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:48:44,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 09:49:33,310 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2691)))) is different from true [2022-11-20 09:49:33,324 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2691)))) is different from true [2022-11-20 09:49:33,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:49:33,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21