./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:15:03,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:15:03,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:15:04,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:15:04,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:15:04,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:15:04,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:15:04,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:15:04,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:15:04,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:15:04,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:15:04,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:15:04,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:15:04,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:15:04,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:15:04,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:15:04,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:15:04,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:15:04,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:15:04,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:15:04,085 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:15:04,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:15:04,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:15:04,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:15:04,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:15:04,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:15:04,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:15:04,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:15:04,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:15:04,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:15:04,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:15:04,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:15:04,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:15:04,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:15:04,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:15:04,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:15:04,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:15:04,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:15:04,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:15:04,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:15:04,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:15:04,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:15:04,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:15:04,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:15:04,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:15:04,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:15:04,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:15:04,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:15:04,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:15:04,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:15:04,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:15:04,142 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:15:04,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:15:04,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:15:04,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:15:04,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:15:04,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:15:04,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:15:04,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:15:04,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:15:04,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:15:04,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:15:04,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:15:04,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:15:04,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:15:04,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:15:04,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:15:04,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:15:04,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:15:04,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:15:04,148 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:15:04,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:15:04,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:15:04,149 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2022-07-19 22:15:04,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:15:04,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:15:04,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:15:04,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:15:04,424 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:15:04,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-07-19 22:15:04,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b06e1d9/dde2f40c2a20435689a253bcad0130b7/FLAG260cf6f1f [2022-07-19 22:15:05,166 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:15:05,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-07-19 22:15:05,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b06e1d9/dde2f40c2a20435689a253bcad0130b7/FLAG260cf6f1f [2022-07-19 22:15:05,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b06e1d9/dde2f40c2a20435689a253bcad0130b7 [2022-07-19 22:15:05,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:15:05,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:15:05,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:15:05,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:15:05,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:15:05,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:15:05" (1/1) ... [2022-07-19 22:15:05,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aae3a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:05, skipping insertion in model container [2022-07-19 22:15:05,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:15:05" (1/1) ... [2022-07-19 22:15:05,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:15:05,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:15:05,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-07-19 22:15:05,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-07-19 22:15:06,175 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:15:06,226 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,233 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,235 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,237 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,246 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,251 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:15:06,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:15:06,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:15:06,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:15:06,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:15:06,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:15:06,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:15:06,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:15:06,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:15:06,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:15:06,621 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:15:06,728 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:15:06,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-07-19 22:15:06,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-07-19 22:15:06,813 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:15:06,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,832 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,842 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,843 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,844 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,844 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,879 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:15:06,880 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:15:06,880 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:15:06,881 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:15:06,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:15:06,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:15:06,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:15:06,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:15:06,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:15:06,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:15:06,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,922 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:15:06,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:15:07,161 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:15:07,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07 WrapperNode [2022-07-19 22:15:07,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:15:07,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:15:07,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:15:07,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:15:07,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,337 INFO L137 Inliner]: procedures = 689, calls = 1497, calls flagged for inlining = 55, calls inlined = 9, statements flattened = 598 [2022-07-19 22:15:07,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:15:07,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:15:07,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:15:07,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:15:07,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:15:07,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:15:07,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:15:07,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:15:07,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (1/1) ... [2022-07-19 22:15:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:15:07,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:07,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 22:15:07,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 22:15:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-19 22:15:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-19 22:15:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:15:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-19 22:15:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-19 22:15:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-19 22:15:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-19 22:15:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 22:15:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 22:15:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:15:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 22:15:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 22:15:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:15:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:15:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:15:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:15:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:15:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:15:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:15:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2022-07-19 22:15:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2022-07-19 22:15:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 22:15:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 22:15:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-19 22:15:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-19 22:15:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-19 22:15:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-19 22:15:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-19 22:15:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-19 22:15:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:15:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:15:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:15:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:15:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:15:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 22:15:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 22:15:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-19 22:15:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-19 22:15:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:15:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-19 22:15:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-19 22:15:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-19 22:15:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-19 22:15:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-19 22:15:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-19 22:15:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:15:07,810 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:15:07,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:15:08,607 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:15:08,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:15:08,617 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 22:15:08,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:15:08 BoogieIcfgContainer [2022-07-19 22:15:08,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:15:08,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:15:08,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:15:08,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:15:08,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:15:05" (1/3) ... [2022-07-19 22:15:08,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bef513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:15:08, skipping insertion in model container [2022-07-19 22:15:08,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:07" (2/3) ... [2022-07-19 22:15:08,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bef513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:15:08, skipping insertion in model container [2022-07-19 22:15:08,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:15:08" (3/3) ... [2022-07-19 22:15:08,629 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2022-07-19 22:15:08,645 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:15:08,646 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:15:08,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:15:08,710 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dc00151, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@20f9b70b [2022-07-19 22:15:08,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:15:08,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-19 22:15:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 22:15:08,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:08,745 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:08,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash 432166812, now seen corresponding path program 1 times [2022-07-19 22:15:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000399560] [2022-07-19 22:15:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:08,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:15:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:15:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:15:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:15:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:15:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:15:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:15:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:15:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:15:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 22:15:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:15:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:15:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-19 22:15:09,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:09,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000399560] [2022-07-19 22:15:09,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000399560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:09,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:09,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:15:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130679048] [2022-07-19 22:15:09,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:09,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:15:09,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:15:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:09,609 INFO L87 Difference]: Start difference. First operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 22:15:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:10,089 INFO L93 Difference]: Finished difference Result 361 states and 504 transitions. [2022-07-19 22:15:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:15:10,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2022-07-19 22:15:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:10,108 INFO L225 Difference]: With dead ends: 361 [2022-07-19 22:15:10,109 INFO L226 Difference]: Without dead ends: 202 [2022-07-19 22:15:10,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:10,119 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 89 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:10,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 305 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:15:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-19 22:15:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160. [2022-07-19 22:15:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.233644859813084) internal successors, (132), 109 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 22:15:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2022-07-19 22:15:10,170 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 105 [2022-07-19 22:15:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:10,171 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2022-07-19 22:15:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 22:15:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2022-07-19 22:15:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 22:15:10,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:10,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:10,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:15:10,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1130672400, now seen corresponding path program 1 times [2022-07-19 22:15:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:10,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745410716] [2022-07-19 22:15:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:10,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:15:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:15:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:15:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:15:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:15:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:15:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:15:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:15:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:15:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 22:15:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:15:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:15:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:15:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-19 22:15:10,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:10,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745410716] [2022-07-19 22:15:10,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745410716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:10,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:10,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:15:10,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600593192] [2022-07-19 22:15:10,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:15:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:15:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:15:10,596 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 22:15:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:11,263 INFO L93 Difference]: Finished difference Result 341 states and 448 transitions. [2022-07-19 22:15:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:15:11,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 122 [2022-07-19 22:15:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:11,267 INFO L225 Difference]: With dead ends: 341 [2022-07-19 22:15:11,267 INFO L226 Difference]: Without dead ends: 245 [2022-07-19 22:15:11,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:15:11,268 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 278 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:11,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 601 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:15:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-19 22:15:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 160. [2022-07-19 22:15:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 22:15:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2022-07-19 22:15:11,287 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 122 [2022-07-19 22:15:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:11,288 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2022-07-19 22:15:11,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 22:15:11,288 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2022-07-19 22:15:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 22:15:11,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:11,295 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 22:15:11,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2103837312, now seen corresponding path program 1 times [2022-07-19 22:15:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:11,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372366221] [2022-07-19 22:15:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:15:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:15:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:15:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:15:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:15:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:15:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:15:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:15:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:15:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:15:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:15:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:15:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:15:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:15:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:15:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:15:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-19 22:15:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:11,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372366221] [2022-07-19 22:15:11,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372366221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:11,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:11,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:15:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917162987] [2022-07-19 22:15:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:11,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:15:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:15:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:15:11,817 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 22:15:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:12,708 INFO L93 Difference]: Finished difference Result 371 states and 489 transitions. [2022-07-19 22:15:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:15:12,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-07-19 22:15:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:12,712 INFO L225 Difference]: With dead ends: 371 [2022-07-19 22:15:12,712 INFO L226 Difference]: Without dead ends: 226 [2022-07-19 22:15:12,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-19 22:15:12,713 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 238 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:12,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 849 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:15:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-19 22:15:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 162. [2022-07-19 22:15:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 111 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-07-19 22:15:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2022-07-19 22:15:12,747 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 130 [2022-07-19 22:15:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:12,749 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2022-07-19 22:15:12,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 22:15:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2022-07-19 22:15:12,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 22:15:12,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:12,751 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:12,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 22:15:12,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -209170488, now seen corresponding path program 1 times [2022-07-19 22:15:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:12,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892379596] [2022-07-19 22:15:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:12,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:12,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823171703] [2022-07-19 22:15:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:12,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:12,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:12,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:12,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:15:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:13,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 22:15:13,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 22:15:13,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:13,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892379596] [2022-07-19 22:15:13,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823171703] [2022-07-19 22:15:13,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823171703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:13,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:13,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:15:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665731288] [2022-07-19 22:15:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:13,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:15:13,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:15:13,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:15:13,438 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-19 22:15:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:13,596 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2022-07-19 22:15:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:15:13,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 145 [2022-07-19 22:15:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:13,599 INFO L225 Difference]: With dead ends: 261 [2022-07-19 22:15:13,599 INFO L226 Difference]: Without dead ends: 162 [2022-07-19 22:15:13,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:15:13,600 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 235 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:13,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 781 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:15:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-19 22:15:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-19 22:15:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-07-19 22:15:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2022-07-19 22:15:13,613 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 145 [2022-07-19 22:15:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:13,614 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2022-07-19 22:15:13,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-19 22:15:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2022-07-19 22:15:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 22:15:13,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:13,616 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:13,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 22:15:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:13,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1337604585, now seen corresponding path program 1 times [2022-07-19 22:15:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015284518] [2022-07-19 22:15:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:13,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:13,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638066177] [2022-07-19 22:15:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:13,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:13,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:13,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:13,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:15:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:14,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 22:15:14,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 22:15:14,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:14,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:14,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015284518] [2022-07-19 22:15:14,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:14,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638066177] [2022-07-19 22:15:14,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638066177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:14,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:14,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:15:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361835348] [2022-07-19 22:15:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:15:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:15:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:15:14,594 INFO L87 Difference]: Start difference. First operand 162 states and 202 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-19 22:15:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:14,863 INFO L93 Difference]: Finished difference Result 274 states and 342 transitions. [2022-07-19 22:15:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:15:14,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 161 [2022-07-19 22:15:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:14,865 INFO L225 Difference]: With dead ends: 274 [2022-07-19 22:15:14,866 INFO L226 Difference]: Without dead ends: 162 [2022-07-19 22:15:14,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:15:14,867 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 300 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:14,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1041 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:15:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-19 22:15:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-19 22:15:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-19 22:15:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2022-07-19 22:15:14,883 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 161 [2022-07-19 22:15:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:14,885 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2022-07-19 22:15:14,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-19 22:15:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2022-07-19 22:15:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:15:14,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:14,888 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:14,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:15,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:15,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash 996052163, now seen corresponding path program 1 times [2022-07-19 22:15:15,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:15,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178648080] [2022-07-19 22:15:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:15,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:15,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:15,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428051573] [2022-07-19 22:15:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:15,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:15,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:15,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:15,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:15:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:15,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 22:15:15,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 22:15:15,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:15,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:15,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178648080] [2022-07-19 22:15:15,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:15,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428051573] [2022-07-19 22:15:15,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428051573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:15,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:15,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:15:15,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037596745] [2022-07-19 22:15:15,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:15,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:15:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:15:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:15:15,778 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:15,978 INFO L93 Difference]: Finished difference Result 286 states and 356 transitions. [2022-07-19 22:15:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:15:15,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-19 22:15:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:15,980 INFO L225 Difference]: With dead ends: 286 [2022-07-19 22:15:15,980 INFO L226 Difference]: Without dead ends: 180 [2022-07-19 22:15:15,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:15:15,982 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 21 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:15,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 893 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:15:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-19 22:15:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 166. [2022-07-19 22:15:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 115 states have internal predecessors, (136), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-19 22:15:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2022-07-19 22:15:15,992 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 176 [2022-07-19 22:15:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:15,993 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2022-07-19 22:15:15,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2022-07-19 22:15:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:15:15,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:15,995 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:16,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:16,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:16,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash 28701509, now seen corresponding path program 1 times [2022-07-19 22:15:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:16,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226797999] [2022-07-19 22:15:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:16,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769456947] [2022-07-19 22:15:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:16,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:16,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:16,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:16,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:15:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:16,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:15:16,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 22:15:16,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:16,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:16,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226797999] [2022-07-19 22:15:16,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:16,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769456947] [2022-07-19 22:15:16,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769456947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:16,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:16,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:15:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914794730] [2022-07-19 22:15:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:16,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:15:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:15:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:16,787 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:16,819 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2022-07-19 22:15:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:15:16,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-19 22:15:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:16,822 INFO L225 Difference]: With dead ends: 274 [2022-07-19 22:15:16,822 INFO L226 Difference]: Without dead ends: 170 [2022-07-19 22:15:16,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:15:16,823 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:16,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 583 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-19 22:15:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2022-07-19 22:15:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 117 states have internal predecessors, (138), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-19 22:15:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2022-07-19 22:15:16,839 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 176 [2022-07-19 22:15:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:16,840 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2022-07-19 22:15:16,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2022-07-19 22:15:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:15:16,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:16,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:16,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:17,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:17,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:17,057 INFO L85 PathProgramCache]: Analyzing trace with hash -463924665, now seen corresponding path program 1 times [2022-07-19 22:15:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:17,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985676359] [2022-07-19 22:15:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:17,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:17,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:17,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366485970] [2022-07-19 22:15:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:17,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:17,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:17,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:15:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:17,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 22:15:17,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 22:15:17,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 22:15:17,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985676359] [2022-07-19 22:15:17,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366485970] [2022-07-19 22:15:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366485970] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 22:15:17,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:15:17,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-19 22:15:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289832949] [2022-07-19 22:15:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:17,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:15:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:15:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:15:17,833 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-19 22:15:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:17,891 INFO L93 Difference]: Finished difference Result 178 states and 222 transitions. [2022-07-19 22:15:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:15:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 176 [2022-07-19 22:15:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:17,894 INFO L225 Difference]: With dead ends: 178 [2022-07-19 22:15:17,894 INFO L226 Difference]: Without dead ends: 176 [2022-07-19 22:15:17,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:15:17,895 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 6 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:17,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 970 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-19 22:15:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-07-19 22:15:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 122 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 22:15:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 219 transitions. [2022-07-19 22:15:17,909 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 219 transitions. Word has length 176 [2022-07-19 22:15:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:17,910 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 219 transitions. [2022-07-19 22:15:17,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-19 22:15:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 219 transitions. [2022-07-19 22:15:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:15:17,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:17,913 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:17,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:18,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1104137534, now seen corresponding path program 1 times [2022-07-19 22:15:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:18,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968153017] [2022-07-19 22:15:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:18,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994813217] [2022-07-19 22:15:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:18,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:18,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:18,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 22:15:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:18,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-19 22:15:18,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-19 22:15:18,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:18,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968153017] [2022-07-19 22:15:18,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:18,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994813217] [2022-07-19 22:15:18,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994813217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:18,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:18,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:15:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695827140] [2022-07-19 22:15:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:18,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:15:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:15:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:15:18,723 INFO L87 Difference]: Start difference. First operand 175 states and 219 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:15:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:18,779 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2022-07-19 22:15:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:15:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 176 [2022-07-19 22:15:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:18,782 INFO L225 Difference]: With dead ends: 281 [2022-07-19 22:15:18,783 INFO L226 Difference]: Without dead ends: 175 [2022-07-19 22:15:18,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:15:18,785 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 13 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:18,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-19 22:15:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-19 22:15:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.194915254237288) internal successors, (141), 122 states have internal predecessors, (141), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 22:15:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2022-07-19 22:15:18,799 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 176 [2022-07-19 22:15:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:18,800 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2022-07-19 22:15:18,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:15:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2022-07-19 22:15:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-19 22:15:18,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:18,803 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:18,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:19,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:19,024 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424536, now seen corresponding path program 1 times [2022-07-19 22:15:19,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:19,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956572730] [2022-07-19 22:15:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:19,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:19,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:19,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778710374] [2022-07-19 22:15:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:19,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:19,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:19,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 22:15:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:19,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 22:15:19,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-19 22:15:19,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:19,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956572730] [2022-07-19 22:15:19,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778710374] [2022-07-19 22:15:19,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778710374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:19,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:19,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:15:19,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666718938] [2022-07-19 22:15:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:15:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:15:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:15:19,547 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:15:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:19,607 INFO L93 Difference]: Finished difference Result 283 states and 351 transitions. [2022-07-19 22:15:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:15:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 177 [2022-07-19 22:15:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:19,609 INFO L225 Difference]: With dead ends: 283 [2022-07-19 22:15:19,610 INFO L226 Difference]: Without dead ends: 177 [2022-07-19 22:15:19,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:15:19,611 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 18 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:19,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 942 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-19 22:15:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2022-07-19 22:15:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 123 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 22:15:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 219 transitions. [2022-07-19 22:15:19,620 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 219 transitions. Word has length 177 [2022-07-19 22:15:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:19,620 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 219 transitions. [2022-07-19 22:15:19,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:15:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 219 transitions. [2022-07-19 22:15:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 22:15:19,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:19,623 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:19,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:19,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:19,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1080671750, now seen corresponding path program 1 times [2022-07-19 22:15:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:19,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898116190] [2022-07-19 22:15:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:19,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:19,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051094680] [2022-07-19 22:15:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:19,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:19,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:19,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:19,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 22:15:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:20,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 22:15:20,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-19 22:15:20,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:20,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898116190] [2022-07-19 22:15:20,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:20,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051094680] [2022-07-19 22:15:20,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051094680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:20,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:20,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:15:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100013360] [2022-07-19 22:15:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:15:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:15:20,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:20,400 INFO L87 Difference]: Start difference. First operand 176 states and 219 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:20,442 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2022-07-19 22:15:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:15:20,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-07-19 22:15:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:20,444 INFO L225 Difference]: With dead ends: 293 [2022-07-19 22:15:20,444 INFO L226 Difference]: Without dead ends: 181 [2022-07-19 22:15:20,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:15:20,446 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 7 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:20,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 559 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-19 22:15:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2022-07-19 22:15:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 124 states have internal predecessors, (143), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 22:15:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 220 transitions. [2022-07-19 22:15:20,455 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 220 transitions. Word has length 179 [2022-07-19 22:15:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:20,455 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 220 transitions. [2022-07-19 22:15:20,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 220 transitions. [2022-07-19 22:15:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 22:15:20,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:20,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:20,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 22:15:20,683 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 712361510, now seen corresponding path program 1 times [2022-07-19 22:15:20,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:20,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685477141] [2022-07-19 22:15:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:20,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:20,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27884107] [2022-07-19 22:15:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:20,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:20,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:20,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:20,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 22:15:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:21,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 22:15:21,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:21,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 5 [2022-07-19 22:15:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-19 22:15:21,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685477141] [2022-07-19 22:15:21,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27884107] [2022-07-19 22:15:21,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27884107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:21,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:21,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:15:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919269821] [2022-07-19 22:15:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:21,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:15:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:15:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:15:21,418 INFO L87 Difference]: Start difference. First operand 177 states and 220 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-19 22:15:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:21,733 INFO L93 Difference]: Finished difference Result 319 states and 401 transitions. [2022-07-19 22:15:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:15:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 179 [2022-07-19 22:15:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:21,736 INFO L225 Difference]: With dead ends: 319 [2022-07-19 22:15:21,736 INFO L226 Difference]: Without dead ends: 202 [2022-07-19 22:15:21,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:15:21,737 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 107 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:21,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1454 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:15:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-19 22:15:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-07-19 22:15:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.2014925373134329) internal successors, (161), 138 states have internal predecessors, (161), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 36 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-19 22:15:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 241 transitions. [2022-07-19 22:15:21,747 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 241 transitions. Word has length 179 [2022-07-19 22:15:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:21,747 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 241 transitions. [2022-07-19 22:15:21,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-19 22:15:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 241 transitions. [2022-07-19 22:15:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 22:15:21,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:21,749 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:21,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:21,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:21,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1965868264, now seen corresponding path program 1 times [2022-07-19 22:15:21,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:21,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258053209] [2022-07-19 22:15:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:22,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:22,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888038283] [2022-07-19 22:15:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:22,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:22,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:22,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 22:15:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 22:15:22,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-19 22:15:22,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:22,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:22,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258053209] [2022-07-19 22:15:22,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:22,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888038283] [2022-07-19 22:15:22,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888038283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:22,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:22,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:15:22,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967862947] [2022-07-19 22:15:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:22,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:15:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:15:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:15:22,681 INFO L87 Difference]: Start difference. First operand 192 states and 241 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:22,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:22,716 INFO L93 Difference]: Finished difference Result 307 states and 387 transitions. [2022-07-19 22:15:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:15:22,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-07-19 22:15:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:22,718 INFO L225 Difference]: With dead ends: 307 [2022-07-19 22:15:22,718 INFO L226 Difference]: Without dead ends: 198 [2022-07-19 22:15:22,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:15:22,719 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 4 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:22,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 782 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-19 22:15:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2022-07-19 22:15:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 136 states have (on average 1.1985294117647058) internal successors, (163), 139 states have internal predecessors, (163), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-19 22:15:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 243 transitions. [2022-07-19 22:15:22,730 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 243 transitions. Word has length 179 [2022-07-19 22:15:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:22,731 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 243 transitions. [2022-07-19 22:15:22,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 243 transitions. [2022-07-19 22:15:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 22:15:22,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:22,733 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:22,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 22:15:22,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1941254556, now seen corresponding path program 1 times [2022-07-19 22:15:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731004480] [2022-07-19 22:15:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:23,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:23,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563152575] [2022-07-19 22:15:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:23,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:23,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:23,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 22:15:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:23,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 22:15:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 22:15:23,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:23,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731004480] [2022-07-19 22:15:23,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563152575] [2022-07-19 22:15:23,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563152575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:23,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:23,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:15:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996295243] [2022-07-19 22:15:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:23,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:15:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:15:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:23,610 INFO L87 Difference]: Start difference. First operand 194 states and 243 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:23,631 INFO L93 Difference]: Finished difference Result 222 states and 276 transitions. [2022-07-19 22:15:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:15:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-07-19 22:15:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:23,633 INFO L225 Difference]: With dead ends: 222 [2022-07-19 22:15:23,633 INFO L226 Difference]: Without dead ends: 195 [2022-07-19 22:15:23,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:23,634 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:23,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 582 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-19 22:15:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-19 22:15:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 137 states have (on average 1.197080291970803) internal successors, (164), 139 states have internal predecessors, (164), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-19 22:15:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 244 transitions. [2022-07-19 22:15:23,642 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 244 transitions. Word has length 182 [2022-07-19 22:15:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:23,643 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 244 transitions. [2022-07-19 22:15:23,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 244 transitions. [2022-07-19 22:15:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 22:15:23,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:23,644 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:23,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:23,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 22:15:23,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash -101731212, now seen corresponding path program 2 times [2022-07-19 22:15:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:23,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003882239] [2022-07-19 22:15:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:23,913 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:23,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959930083] [2022-07-19 22:15:23,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:15:23,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:23,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:23,915 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:23,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 22:15:24,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:15:24,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:15:24,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 22:15:24,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 22:15:24,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003882239] [2022-07-19 22:15:24,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959930083] [2022-07-19 22:15:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959930083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:24,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:24,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:15:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125848696] [2022-07-19 22:15:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:15:24,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:15:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:15:24,538 INFO L87 Difference]: Start difference. First operand 195 states and 244 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:24,573 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2022-07-19 22:15:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:15:24,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-07-19 22:15:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:24,575 INFO L225 Difference]: With dead ends: 330 [2022-07-19 22:15:24,575 INFO L226 Difference]: Without dead ends: 211 [2022-07-19 22:15:24,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:15:24,577 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 9 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:24,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 788 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-19 22:15:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2022-07-19 22:15:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 147 states have (on average 1.1972789115646258) internal successors, (176), 149 states have internal predecessors, (176), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-19 22:15:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 256 transitions. [2022-07-19 22:15:24,587 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 256 transitions. Word has length 185 [2022-07-19 22:15:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:24,588 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 256 transitions. [2022-07-19 22:15:24,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 256 transitions. [2022-07-19 22:15:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 22:15:24,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:24,590 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:24,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-19 22:15:24,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 22:15:24,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash 747347188, now seen corresponding path program 1 times [2022-07-19 22:15:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:24,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479608346] [2022-07-19 22:15:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:24,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:24,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707268370] [2022-07-19 22:15:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:24,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:24,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:24,869 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:24,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 22:15:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:25,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:15:25,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 22:15:25,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:25,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479608346] [2022-07-19 22:15:25,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:25,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707268370] [2022-07-19 22:15:25,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707268370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:25,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:25,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:15:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582073738] [2022-07-19 22:15:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:15:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:15:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:25,370 INFO L87 Difference]: Start difference. First operand 205 states and 256 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:25,394 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2022-07-19 22:15:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:15:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-07-19 22:15:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:25,396 INFO L225 Difference]: With dead ends: 332 [2022-07-19 22:15:25,396 INFO L226 Difference]: Without dead ends: 201 [2022-07-19 22:15:25,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:15:25,397 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:25,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 582 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-19 22:15:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2022-07-19 22:15:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 141 states have internal predecessors, (164), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-19 22:15:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 244 transitions. [2022-07-19 22:15:25,406 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 244 transitions. Word has length 185 [2022-07-19 22:15:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 244 transitions. [2022-07-19 22:15:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 244 transitions. [2022-07-19 22:15:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 22:15:25,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:25,409 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:25,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:25,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 22:15:25,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash 382427316, now seen corresponding path program 1 times [2022-07-19 22:15:25,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:25,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007992721] [2022-07-19 22:15:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:25,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:25,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984269914] [2022-07-19 22:15:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:25,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:25,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:25,691 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:25,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 22:15:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:26,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:15:26,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 22:15:26,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:26,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:26,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007992721] [2022-07-19 22:15:26,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:26,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984269914] [2022-07-19 22:15:26,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984269914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:26,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:26,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:15:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089309919] [2022-07-19 22:15:26,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:15:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:15:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:15:26,172 INFO L87 Difference]: Start difference. First operand 197 states and 244 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:26,208 INFO L93 Difference]: Finished difference Result 347 states and 435 transitions. [2022-07-19 22:15:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:15:26,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-07-19 22:15:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:26,210 INFO L225 Difference]: With dead ends: 347 [2022-07-19 22:15:26,211 INFO L226 Difference]: Without dead ends: 197 [2022-07-19 22:15:26,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:15:26,212 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 586 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 [2022-07-19 22:15:26,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 586 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:15:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-19 22:15:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-07-19 22:15:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 141 states have internal predecessors, (163), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-19 22:15:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 243 transitions. [2022-07-19 22:15:26,220 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 243 transitions. Word has length 185 [2022-07-19 22:15:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:26,220 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 243 transitions. [2022-07-19 22:15:26,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:15:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 243 transitions. [2022-07-19 22:15:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 22:15:26,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:26,222 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:26,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-19 22:15:26,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:26,435 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -908019048, now seen corresponding path program 1 times [2022-07-19 22:15:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:26,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76536756] [2022-07-19 22:15:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:26,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:26,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149635787] [2022-07-19 22:15:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:26,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:26,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:26,505 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:26,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 22:15:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:26,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-19 22:15:26,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:26,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:15:27,304 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 22:15:27,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 22:15:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:15:29,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 22:15:31,557 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_84| Int) (v_ArrVal_1769 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84| v_ArrVal_1769)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84|) 0))) (exists ((v_ArrVal_1770 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1770)))) is different from true [2022-07-19 22:15:31,944 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1772 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1772) |c_#memory_int|)) is different from true [2022-07-19 22:15:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 52 proven. 20 refuted. 2 times theorem prover too weak. 42 trivial. 3 not checked. [2022-07-19 22:15:32,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:33,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76536756] [2022-07-19 22:15:33,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:33,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149635787] [2022-07-19 22:15:33,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149635787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:15:33,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:15:33,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-19 22:15:33,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300493471] [2022-07-19 22:15:33,200 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:33,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 22:15:33,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 22:15:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=809, Unknown=28, NotChecked=118, Total=1056 [2022-07-19 22:15:33,201 INFO L87 Difference]: Start difference. First operand 197 states and 243 transitions. Second operand has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-07-19 22:15:33,685 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1772 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1772) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_84| Int) (v_ArrVal_1769 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84| v_ArrVal_1769)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84|) 0))) (exists ((v_ArrVal_1770 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1770)))) is different from true [2022-07-19 22:15:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:34,263 INFO L93 Difference]: Finished difference Result 395 states and 495 transitions. [2022-07-19 22:15:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:15:34,264 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) Word has length 187 [2022-07-19 22:15:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:34,265 INFO L225 Difference]: With dead ends: 395 [2022-07-19 22:15:34,266 INFO L226 Difference]: Without dead ends: 278 [2022-07-19 22:15:34,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 220 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=150, Invalid=1304, Unknown=40, NotChecked=228, Total=1722 [2022-07-19 22:15:34,267 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 94 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2342 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:34,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1763 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 989 Invalid, 0 Unknown, 2342 Unchecked, 0.7s Time] [2022-07-19 22:15:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-19 22:15:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 251. [2022-07-19 22:15:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 186 states have internal predecessors, (211), 40 states have call successors, (40), 22 states have call predecessors, (40), 29 states have return successors, (61), 43 states have call predecessors, (61), 39 states have call successors, (61) [2022-07-19 22:15:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 312 transitions. [2022-07-19 22:15:34,305 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 312 transitions. Word has length 187 [2022-07-19 22:15:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:34,305 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 312 transitions. [2022-07-19 22:15:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-07-19 22:15:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 312 transitions. [2022-07-19 22:15:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-19 22:15:34,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:34,307 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:34,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:34,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 22:15:34,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1925449391, now seen corresponding path program 1 times [2022-07-19 22:15:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:34,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954992596] [2022-07-19 22:15:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:34,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:34,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412340551] [2022-07-19 22:15:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:34,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:34,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:34,597 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:34,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 22:15:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:35,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-19 22:15:35,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:35,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:15:35,406 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 22:15:35,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 22:15:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:15:37,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 22:15:39,585 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1924 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1924) |c_#memory_int|)) is different from true [2022-07-19 22:15:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 3 not checked. [2022-07-19 22:15:39,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:40,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954992596] [2022-07-19 22:15:40,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:40,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412340551] [2022-07-19 22:15:40,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412340551] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:15:40,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:15:40,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-19 22:15:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078764878] [2022-07-19 22:15:40,314 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 22:15:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 22:15:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=431, Unknown=6, NotChecked=42, Total=552 [2022-07-19 22:15:40,315 INFO L87 Difference]: Start difference. First operand 251 states and 312 transitions. Second operand has 23 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 11 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-19 22:15:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:41,286 INFO L93 Difference]: Finished difference Result 481 states and 607 transitions. [2022-07-19 22:15:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 22:15:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 11 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) Word has length 193 [2022-07-19 22:15:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:41,289 INFO L225 Difference]: With dead ends: 481 [2022-07-19 22:15:41,289 INFO L226 Difference]: Without dead ends: 347 [2022-07-19 22:15:41,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=121, Invalid=796, Unknown=17, NotChecked=58, Total=992 [2022-07-19 22:15:41,290 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 138 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 867 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:41,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1249 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1055 Invalid, 0 Unknown, 867 Unchecked, 0.7s Time] [2022-07-19 22:15:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-19 22:15:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 275. [2022-07-19 22:15:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 201 states have (on average 1.1741293532338308) internal successors, (236), 207 states have internal predecessors, (236), 41 states have call successors, (41), 23 states have call predecessors, (41), 32 states have return successors, (65), 45 states have call predecessors, (65), 40 states have call successors, (65) [2022-07-19 22:15:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 342 transitions. [2022-07-19 22:15:41,305 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 342 transitions. Word has length 193 [2022-07-19 22:15:41,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:41,305 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 342 transitions. [2022-07-19 22:15:41,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 11 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-19 22:15:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 342 transitions. [2022-07-19 22:15:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-19 22:15:41,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:41,307 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:41,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:41,524 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1752761233, now seen corresponding path program 1 times [2022-07-19 22:15:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:41,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585974785] [2022-07-19 22:15:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:41,585 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:41,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933244149] [2022-07-19 22:15:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:41,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:41,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:41,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:41,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 22:15:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:42,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 119 conjunts are in the unsatisfiable core [2022-07-19 22:15:42,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:42,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:15:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:15:42,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-19 22:15:42,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 22:15:42,531 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 22:15:42,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 22:15:42,583 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 22:15:42,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 22:15:44,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:15:44,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 22:15:47,230 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2086 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2086) |c_#memory_int|)) is different from true [2022-07-19 22:15:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 22 refuted. 2 times theorem prover too weak. 42 trivial. 3 not checked. [2022-07-19 22:15:47,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:48,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585974785] [2022-07-19 22:15:48,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933244149] [2022-07-19 22:15:48,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933244149] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:15:48,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:15:48,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-07-19 22:15:48,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254657348] [2022-07-19 22:15:48,490 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:48,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 22:15:48,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 22:15:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1031, Unknown=46, NotChecked=66, Total=1260 [2022-07-19 22:15:48,491 INFO L87 Difference]: Start difference. First operand 275 states and 342 transitions. Second operand has 35 states, 31 states have (on average 3.935483870967742) internal successors, (122), 30 states have internal predecessors, (122), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-19 22:15:49,000 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_117| Int) (v_ArrVal_2083 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_117| v_ArrVal_2083)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_117|) 0))) (exists ((v_ArrVal_2086 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2086) |c_#memory_int|)) (exists ((v_ArrVal_2084 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2084)))) is different from true [2022-07-19 22:15:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:49,515 INFO L93 Difference]: Finished difference Result 471 states and 588 transitions. [2022-07-19 22:15:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 22:15:49,516 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 3.935483870967742) internal successors, (122), 30 states have internal predecessors, (122), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) Word has length 193 [2022-07-19 22:15:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:49,518 INFO L225 Difference]: With dead ends: 471 [2022-07-19 22:15:49,518 INFO L226 Difference]: Without dead ends: 339 [2022-07-19 22:15:49,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 226 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=167, Invalid=1589, Unknown=58, NotChecked=166, Total=1980 [2022-07-19 22:15:49,520 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 99 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2159 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:49,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1857 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 924 Invalid, 0 Unknown, 2159 Unchecked, 0.6s Time] [2022-07-19 22:15:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-19 22:15:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 312. [2022-07-19 22:15:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 229 states have (on average 1.1746724890829694) internal successors, (269), 236 states have internal predecessors, (269), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (74), 50 states have call predecessors, (74), 44 states have call successors, (74) [2022-07-19 22:15:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 388 transitions. [2022-07-19 22:15:49,537 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 388 transitions. Word has length 193 [2022-07-19 22:15:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:49,537 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 388 transitions. [2022-07-19 22:15:49,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 3.935483870967742) internal successors, (122), 30 states have internal predecessors, (122), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-19 22:15:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 388 transitions. [2022-07-19 22:15:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-19 22:15:49,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:49,539 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:49,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:49,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:49,768 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash -16710381, now seen corresponding path program 1 times [2022-07-19 22:15:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606348267] [2022-07-19 22:15:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:49,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:49,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139693736] [2022-07-19 22:15:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:49,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:49,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:49,826 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:49,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 22:15:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:51,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 22:15:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 22:15:51,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 22:15:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:51,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606348267] [2022-07-19 22:15:51,812 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:51,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139693736] [2022-07-19 22:15:51,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139693736] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:15:51,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:15:51,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-19 22:15:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137720545] [2022-07-19 22:15:51,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:51,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:15:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:15:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:15:51,815 INFO L87 Difference]: Start difference. First operand 312 states and 388 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-19 22:15:51,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:51,949 INFO L93 Difference]: Finished difference Result 470 states and 604 transitions. [2022-07-19 22:15:51,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:15:51,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2022-07-19 22:15:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:51,951 INFO L225 Difference]: With dead ends: 470 [2022-07-19 22:15:51,951 INFO L226 Difference]: Without dead ends: 327 [2022-07-19 22:15:51,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:15:51,953 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 46 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:51,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 940 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:15:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-19 22:15:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 321. [2022-07-19 22:15:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 238 states have (on average 1.180672268907563) internal successors, (281), 245 states have internal predecessors, (281), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (74), 50 states have call predecessors, (74), 44 states have call successors, (74) [2022-07-19 22:15:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 400 transitions. [2022-07-19 22:15:51,971 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 400 transitions. Word has length 193 [2022-07-19 22:15:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:51,971 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 400 transitions. [2022-07-19 22:15:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-19 22:15:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 400 transitions. [2022-07-19 22:15:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-19 22:15:51,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:51,973 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:52,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-19 22:15:52,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:52,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1529453249, now seen corresponding path program 1 times [2022-07-19 22:15:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:52,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786488142] [2022-07-19 22:15:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:52,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:52,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:52,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537283817] [2022-07-19 22:15:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:52,259 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:52,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 22:15:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:52,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 22:15:52,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 22:15:52,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:52,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:52,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786488142] [2022-07-19 22:15:52,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:52,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537283817] [2022-07-19 22:15:52,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537283817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:52,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:52,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:15:52,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903239508] [2022-07-19 22:15:52,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:52,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:15:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:15:52,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:15:52,833 INFO L87 Difference]: Start difference. First operand 321 states and 400 transitions. Second operand has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-19 22:15:53,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:53,081 INFO L93 Difference]: Finished difference Result 471 states and 585 transitions. [2022-07-19 22:15:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:15:53,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 205 [2022-07-19 22:15:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:53,084 INFO L225 Difference]: With dead ends: 471 [2022-07-19 22:15:53,084 INFO L226 Difference]: Without dead ends: 319 [2022-07-19 22:15:53,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:15:53,085 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 233 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:53,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1043 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:15:53,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-19 22:15:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-07-19 22:15:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.1772151898734178) internal successors, (279), 243 states have internal predecessors, (279), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-19 22:15:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 397 transitions. [2022-07-19 22:15:53,101 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 397 transitions. Word has length 205 [2022-07-19 22:15:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:53,101 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 397 transitions. [2022-07-19 22:15:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-19 22:15:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 397 transitions. [2022-07-19 22:15:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:15:53,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:53,103 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:53,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:53,328 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2089690696, now seen corresponding path program 1 times [2022-07-19 22:15:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:53,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85416421] [2022-07-19 22:15:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:53,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:53,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355981783] [2022-07-19 22:15:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:53,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:53,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:53,411 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:53,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 22:15:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:53,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-19 22:15:53,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-19 22:15:53,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:15:54,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:54,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85416421] [2022-07-19 22:15:54,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:54,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355981783] [2022-07-19 22:15:54,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355981783] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:15:54,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:15:54,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-19 22:15:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642018128] [2022-07-19 22:15:54,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:54,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 22:15:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 22:15:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:15:54,291 INFO L87 Difference]: Start difference. First operand 319 states and 397 transitions. Second operand has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-19 22:15:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:54,406 INFO L93 Difference]: Finished difference Result 464 states and 573 transitions. [2022-07-19 22:15:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:15:54,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) Word has length 226 [2022-07-19 22:15:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:54,409 INFO L225 Difference]: With dead ends: 464 [2022-07-19 22:15:54,409 INFO L226 Difference]: Without dead ends: 322 [2022-07-19 22:15:54,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:15:54,410 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 17 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:54,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1868 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:15:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-19 22:15:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2022-07-19 22:15:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.1757322175732217) internal successors, (281), 245 states have internal predecessors, (281), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-19 22:15:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 399 transitions. [2022-07-19 22:15:54,429 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 399 transitions. Word has length 226 [2022-07-19 22:15:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:54,430 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 399 transitions. [2022-07-19 22:15:54,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-19 22:15:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 399 transitions. [2022-07-19 22:15:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-19 22:15:54,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:54,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:54,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-19 22:15:54,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-19 22:15:54,656 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1940716689, now seen corresponding path program 1 times [2022-07-19 22:15:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:54,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66244998] [2022-07-19 22:15:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:54,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:54,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163346630] [2022-07-19 22:15:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:54,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:54,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:54,718 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:54,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 22:15:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:15:55,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-19 22:15:55,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-19 22:15:55,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:15:55,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66244998] [2022-07-19 22:15:55,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163346630] [2022-07-19 22:15:55,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163346630] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:15:55,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:15:55,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-07-19 22:15:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737431959] [2022-07-19 22:15:55,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:55,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 22:15:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 22:15:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:15:55,704 INFO L87 Difference]: Start difference. First operand 321 states and 399 transitions. Second operand has 16 states, 13 states have (on average 9.307692307692308) internal successors, (121), 16 states have internal predecessors, (121), 7 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2022-07-19 22:15:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:55,855 INFO L93 Difference]: Finished difference Result 468 states and 577 transitions. [2022-07-19 22:15:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:15:55,856 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 9.307692307692308) internal successors, (121), 16 states have internal predecessors, (121), 7 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) Word has length 222 [2022-07-19 22:15:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:55,858 INFO L225 Difference]: With dead ends: 468 [2022-07-19 22:15:55,858 INFO L226 Difference]: Without dead ends: 324 [2022-07-19 22:15:55,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:15:55,860 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 44 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:55,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1658 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:15:55,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-19 22:15:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2022-07-19 22:15:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 241 states have (on average 1.1742738589211619) internal successors, (283), 247 states have internal predecessors, (283), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-19 22:15:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 401 transitions. [2022-07-19 22:15:55,877 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 401 transitions. Word has length 222 [2022-07-19 22:15:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:55,877 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 401 transitions. [2022-07-19 22:15:55,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 9.307692307692308) internal successors, (121), 16 states have internal predecessors, (121), 7 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2022-07-19 22:15:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 401 transitions. [2022-07-19 22:15:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-19 22:15:55,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:55,880 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:55,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:56,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-19 22:15:56,095 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash 783622132, now seen corresponding path program 2 times [2022-07-19 22:15:56,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:56,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214878459] [2022-07-19 22:15:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:56,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:56,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491657763] [2022-07-19 22:15:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:15:56,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:56,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:56,157 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:56,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-19 22:15:57,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:15:57,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:15:57,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 22:15:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-19 22:15:57,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:15:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:15:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:57,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214878459] [2022-07-19 22:15:57,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:57,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491657763] [2022-07-19 22:15:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491657763] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:15:57,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:15:57,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-19 22:15:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285378518] [2022-07-19 22:15:57,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:15:57,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 22:15:57,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 22:15:57,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:15:57,562 INFO L87 Difference]: Start difference. First operand 323 states and 401 transitions. Second operand has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-19 22:15:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:57,730 INFO L93 Difference]: Finished difference Result 472 states and 581 transitions. [2022-07-19 22:15:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:15:57,731 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) Word has length 230 [2022-07-19 22:15:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:57,732 INFO L225 Difference]: With dead ends: 472 [2022-07-19 22:15:57,733 INFO L226 Difference]: Without dead ends: 326 [2022-07-19 22:15:57,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:15:57,734 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:57,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1691 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:15:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-19 22:15:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 325. [2022-07-19 22:15:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 243 states have (on average 1.1728395061728396) internal successors, (285), 249 states have internal predecessors, (285), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-19 22:15:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 403 transitions. [2022-07-19 22:15:57,750 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 403 transitions. Word has length 230 [2022-07-19 22:15:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:57,750 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 403 transitions. [2022-07-19 22:15:57,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-19 22:15:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 403 transitions. [2022-07-19 22:15:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-19 22:15:57,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:57,753 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:57,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:57,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:57,976 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:57,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1398750254, now seen corresponding path program 3 times [2022-07-19 22:15:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:57,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738643439] [2022-07-19 22:15:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:57,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:58,040 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:58,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619730499] [2022-07-19 22:15:58,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:15:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:58,042 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:58,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-19 22:15:58,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 22:15:58,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:15:58,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 22:15:58,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:15:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-19 22:15:58,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:15:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:15:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738643439] [2022-07-19 22:15:58,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:15:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619730499] [2022-07-19 22:15:58,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619730499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:15:58,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:15:58,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 22:15:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342321578] [2022-07-19 22:15:58,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:15:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:15:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:15:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:15:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:15:58,724 INFO L87 Difference]: Start difference. First operand 325 states and 403 transitions. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-19 22:15:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:15:58,977 INFO L93 Difference]: Finished difference Result 480 states and 600 transitions. [2022-07-19 22:15:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:15:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) Word has length 232 [2022-07-19 22:15:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:15:59,015 INFO L225 Difference]: With dead ends: 480 [2022-07-19 22:15:59,015 INFO L226 Difference]: Without dead ends: 334 [2022-07-19 22:15:59,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:15:59,016 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 15 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:15:59,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2697 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:15:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-19 22:15:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2022-07-19 22:15:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 247 states have (on average 1.174089068825911) internal successors, (290), 254 states have internal predecessors, (290), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-19 22:15:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 410 transitions. [2022-07-19 22:15:59,034 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 410 transitions. Word has length 232 [2022-07-19 22:15:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:15:59,034 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 410 transitions. [2022-07-19 22:15:59,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-19 22:15:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 410 transitions. [2022-07-19 22:15:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:15:59,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:15:59,037 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:15:59,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-19 22:15:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:59,264 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:15:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:15:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash 720148011, now seen corresponding path program 2 times [2022-07-19 22:15:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:15:59,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662497039] [2022-07-19 22:15:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:15:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:15:59,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:15:59,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649898087] [2022-07-19 22:15:59,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:15:59,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:15:59,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:15:59,327 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:15:59,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-19 22:16:01,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:16:01,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:16:01,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-19 22:16:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:16:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-19 22:16:01,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:16:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:16:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:16:01,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662497039] [2022-07-19 22:16:01,878 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:16:01,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649898087] [2022-07-19 22:16:01,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649898087] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:16:01,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:16:01,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-19 22:16:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614798292] [2022-07-19 22:16:01,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:16:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 22:16:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:16:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 22:16:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:16:01,880 INFO L87 Difference]: Start difference. First operand 330 states and 410 transitions. Second operand has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-19 22:16:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:16:02,082 INFO L93 Difference]: Finished difference Result 486 states and 596 transitions. [2022-07-19 22:16:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:16:02,083 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 226 [2022-07-19 22:16:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:16:02,085 INFO L225 Difference]: With dead ends: 486 [2022-07-19 22:16:02,085 INFO L226 Difference]: Without dead ends: 333 [2022-07-19 22:16:02,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-07-19 22:16:02,086 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 50 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:16:02,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1876 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:16:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-19 22:16:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2022-07-19 22:16:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 249 states have (on average 1.1726907630522088) internal successors, (292), 256 states have internal predecessors, (292), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-19 22:16:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 412 transitions. [2022-07-19 22:16:02,104 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 412 transitions. Word has length 226 [2022-07-19 22:16:02,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:16:02,107 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 412 transitions. [2022-07-19 22:16:02,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-19 22:16:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 412 transitions. [2022-07-19 22:16:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 22:16:02,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:16:02,109 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:16:02,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-19 22:16:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 22:16:02,324 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:16:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:16:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2027128905, now seen corresponding path program 3 times [2022-07-19 22:16:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:16:02,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499547786] [2022-07-19 22:16:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:16:02,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:16:02,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:16:02,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618285769] [2022-07-19 22:16:02,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:16:02,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:16:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:16:02,396 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:16:02,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-19 22:17:29,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-19 22:17:29,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:17:29,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-19 22:17:29,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:17:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 28 proven. 47 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-19 22:17:29,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:17:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-19 22:17:29,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:17:29,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499547786] [2022-07-19 22:17:29,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:17:29,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618285769] [2022-07-19 22:17:29,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618285769] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:17:29,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:17:29,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 23 [2022-07-19 22:17:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184282579] [2022-07-19 22:17:29,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:17:29,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 22:17:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:17:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 22:17:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:17:29,989 INFO L87 Difference]: Start difference. First operand 332 states and 412 transitions. Second operand has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 23 states have internal predecessors, (150), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-19 22:17:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:17:31,020 INFO L93 Difference]: Finished difference Result 532 states and 701 transitions. [2022-07-19 22:17:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 22:17:31,022 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 23 states have internal predecessors, (150), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 228 [2022-07-19 22:17:31,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:17:31,024 INFO L225 Difference]: With dead ends: 532 [2022-07-19 22:17:31,024 INFO L226 Difference]: Without dead ends: 369 [2022-07-19 22:17:31,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 22:17:31,026 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 142 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:17:31,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1901 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:17:31,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-19 22:17:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 350. [2022-07-19 22:17:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 267 states have (on average 1.1835205992509363) internal successors, (316), 274 states have internal predecessors, (316), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-19 22:17:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 436 transitions. [2022-07-19 22:17:31,046 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 436 transitions. Word has length 228 [2022-07-19 22:17:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:17:31,047 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 436 transitions. [2022-07-19 22:17:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 23 states have internal predecessors, (150), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-19 22:17:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 436 transitions. [2022-07-19 22:17:31,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-07-19 22:17:31,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:17:31,051 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 10, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:17:31,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-19 22:17:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 22:17:31,276 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:17:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:17:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1281085344, now seen corresponding path program 1 times [2022-07-19 22:17:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:17:31,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240675590] [2022-07-19 22:17:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:17:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:17:31,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:17:31,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880071284] [2022-07-19 22:17:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:17:31,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:17:31,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:17:31,365 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:17:31,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-19 22:17:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:17:31,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 22:17:31,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:17:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 163 proven. 25 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-19 22:17:32,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:17:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-07-19 22:17:32,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:17:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240675590] [2022-07-19 22:17:32,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:17:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880071284] [2022-07-19 22:17:32,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880071284] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:17:32,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:17:32,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-19 22:17:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414907818] [2022-07-19 22:17:32,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:17:32,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 22:17:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:17:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 22:17:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:17:32,639 INFO L87 Difference]: Start difference. First operand 350 states and 436 transitions. Second operand has 21 states, 19 states have (on average 8.68421052631579) internal successors, (165), 21 states have internal predecessors, (165), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-19 22:17:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:17:32,889 INFO L93 Difference]: Finished difference Result 526 states and 648 transitions. [2022-07-19 22:17:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 22:17:32,890 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.68421052631579) internal successors, (165), 21 states have internal predecessors, (165), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 295 [2022-07-19 22:17:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:17:32,892 INFO L225 Difference]: With dead ends: 526 [2022-07-19 22:17:32,892 INFO L226 Difference]: Without dead ends: 353 [2022-07-19 22:17:32,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:17:32,893 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 41 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:17:32,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1886 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:17:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-19 22:17:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 352. [2022-07-19 22:17:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 269 states have (on average 1.1821561338289963) internal successors, (318), 276 states have internal predecessors, (318), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-19 22:17:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 438 transitions. [2022-07-19 22:17:32,912 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 438 transitions. Word has length 295 [2022-07-19 22:17:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:17:32,912 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 438 transitions. [2022-07-19 22:17:32,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.68421052631579) internal successors, (165), 21 states have internal predecessors, (165), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-19 22:17:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 438 transitions. [2022-07-19 22:17:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-19 22:17:32,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:17:32,915 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:17:32,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-19 22:17:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 22:17:33,132 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:17:33,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:17:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash -949690780, now seen corresponding path program 2 times [2022-07-19 22:17:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:17:33,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856124862] [2022-07-19 22:17:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:17:33,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:17:33,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:17:33,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817864536] [2022-07-19 22:17:33,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:17:33,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:17:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:17:33,227 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:17:33,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-19 22:17:34,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:17:34,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:17:34,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-19 22:17:34,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:17:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-07-19 22:17:34,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:17:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-07-19 22:17:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:17:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856124862] [2022-07-19 22:17:34,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:17:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817864536] [2022-07-19 22:17:34,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817864536] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:17:34,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:17:34,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-19 22:17:34,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48559126] [2022-07-19 22:17:34,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:17:34,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 22:17:34,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:17:34,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 22:17:34,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:17:34,936 INFO L87 Difference]: Start difference. First operand 352 states and 438 transitions. Second operand has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-19 22:17:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:17:35,177 INFO L93 Difference]: Finished difference Result 530 states and 652 transitions. [2022-07-19 22:17:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:17:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 299 [2022-07-19 22:17:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:17:35,182 INFO L225 Difference]: With dead ends: 530 [2022-07-19 22:17:35,182 INFO L226 Difference]: Without dead ends: 355 [2022-07-19 22:17:35,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:17:35,184 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 52 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:17:35,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2254 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:17:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-19 22:17:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2022-07-19 22:17:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 271 states have (on average 1.1808118081180812) internal successors, (320), 278 states have internal predecessors, (320), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-19 22:17:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 440 transitions. [2022-07-19 22:17:35,202 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 440 transitions. Word has length 299 [2022-07-19 22:17:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:17:35,203 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 440 transitions. [2022-07-19 22:17:35,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-19 22:17:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 440 transitions. [2022-07-19 22:17:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-19 22:17:35,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:17:35,206 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:17:35,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-19 22:17:35,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:17:35,420 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:17:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:17:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1955674728, now seen corresponding path program 3 times [2022-07-19 22:17:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:17:35,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647050724] [2022-07-19 22:17:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:17:35,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:17:35,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:17:35,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313730284] [2022-07-19 22:17:35,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:17:35,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:17:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:17:35,494 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:17:35,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-19 22:17:37,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-19 22:17:37,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:17:37,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-19 22:17:37,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:17:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 77 proven. 40 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-07-19 22:17:37,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:17:37,913 INFO L356 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-07-19 22:17:37,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 69 [2022-07-19 22:17:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 59 proven. 50 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-07-19 22:17:38,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:17:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647050724] [2022-07-19 22:17:38,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:17:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313730284] [2022-07-19 22:17:38,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313730284] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:17:38,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:17:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 19 [2022-07-19 22:17:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6816439] [2022-07-19 22:17:38,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:17:38,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 22:17:38,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:17:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 22:17:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:17:38,297 INFO L87 Difference]: Start difference. First operand 354 states and 440 transitions. Second operand has 19 states, 16 states have (on average 8.4375) internal successors, (135), 17 states have internal predecessors, (135), 9 states have call successors, (37), 4 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 9 states have call successors, (35) [2022-07-19 22:17:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:17:39,952 INFO L93 Difference]: Finished difference Result 469 states and 604 transitions. [2022-07-19 22:17:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:17:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.4375) internal successors, (135), 17 states have internal predecessors, (135), 9 states have call successors, (37), 4 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 9 states have call successors, (35) Word has length 303 [2022-07-19 22:17:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:17:39,955 INFO L225 Difference]: With dead ends: 469 [2022-07-19 22:17:39,956 INFO L226 Difference]: Without dead ends: 415 [2022-07-19 22:17:39,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 587 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:17:39,957 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 236 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:17:39,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2025 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 22:17:39,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-19 22:17:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 373. [2022-07-19 22:17:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 283 states have (on average 1.1802120141342756) internal successors, (334), 291 states have internal predecessors, (334), 50 states have call successors, (50), 26 states have call predecessors, (50), 39 states have return successors, (89), 56 states have call predecessors, (89), 49 states have call successors, (89) [2022-07-19 22:17:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 473 transitions. [2022-07-19 22:17:39,979 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 473 transitions. Word has length 303 [2022-07-19 22:17:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:17:39,979 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 473 transitions. [2022-07-19 22:17:39,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.4375) internal successors, (135), 17 states have internal predecessors, (135), 9 states have call successors, (37), 4 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 9 states have call successors, (35) [2022-07-19 22:17:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 473 transitions. [2022-07-19 22:17:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-19 22:17:39,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:17:39,982 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:17:40,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-07-19 22:17:40,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:17:40,204 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:17:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:17:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1301159256, now seen corresponding path program 1 times [2022-07-19 22:17:40,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:17:40,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797719713] [2022-07-19 22:17:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:17:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:17:40,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:17:40,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608303879] [2022-07-19 22:17:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:17:40,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:17:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:17:40,286 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:17:40,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-19 22:17:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:17:42,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 442 conjunts are in the unsatisfiable core [2022-07-19 22:17:42,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:17:42,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:17:42,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:17:43,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-19 22:17:43,144 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 22:17:43,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-19 22:17:43,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:17:43,202 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-19 22:17:43,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-19 22:17:43,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:17:43,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 22:17:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:17:43,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:17:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:17:43,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-07-19 22:17:43,535 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5006 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5006) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5005 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5005) |c_#memory_$Pointer$.base|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_518| Int) (v_ArrVal_5004 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518| v_ArrVal_5004))))) is different from true [2022-07-19 22:17:43,979 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5011 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5011))) (exists ((v_ArrVal_5010 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5010) |c_#memory_$Pointer$.offset|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_518| Int) (v_ArrVal_5004 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518| v_ArrVal_5004))))) is different from true [2022-07-19 22:17:45,765 INFO L356 Elim1Store]: treesize reduction 400, result has 21.7 percent of original size [2022-07-19 22:17:45,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 439 treesize of output 513 [2022-07-19 22:17:45,798 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:17:45,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-07-19 22:17:45,836 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:17:45,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-07-19 22:17:48,039 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5017 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5017) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5015 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5015) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5016 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5016))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_518| Int) (v_ArrVal_5004 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518| v_ArrVal_5004))))) is different from true [2022-07-19 22:17:48,517 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-19 22:17:48,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 36 treesize of output 37 [2022-07-19 22:17:48,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:17:48,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:17:48,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:17:48,639 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-19 22:17:48,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 36 treesize of output 37 [2022-07-19 22:18:35,102 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 22:18:56,424 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)