./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_init_dynamic_harness-1.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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:12:34,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:12:34,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:12:34,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:12:34,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:12:34,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:12:34,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:12:34,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:12:34,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:12:34,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:12:34,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:12:34,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:12:34,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:12:34,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:12:34,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:12:34,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:12:34,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:12:34,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:12:34,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:12:34,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:12:34,142 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:12:34,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:12:34,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:12:34,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:12:34,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:12:34,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:12:34,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:12:34,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:12:34,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:12:34,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:12:34,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:12:34,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:12:34,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:12:34,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:12:34,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:12:34,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:12:34,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:12:34,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:12:34,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:12:34,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:12:34,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:12:34,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:12:34,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:12:34,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:12:34,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:12:34,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:12:34,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:12:34,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:12:34,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:12:34,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:12:34,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:12:34,200 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:12:34,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:12:34,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:12:34,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:12:34,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:12:34,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:12:34,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:12:34,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:12:34,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:12:34,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:12:34,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:12:34,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:12:34,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:12:34,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:12:34,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:12:34,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:12:34,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:12:34,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:12:34,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:12:34,204 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:12:34,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:12:34,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:12:34,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2022-07-12 11:12:34,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:12:34,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:12:34,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:12:34,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:12:34,446 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:12:34,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2022-07-12 11:12:34,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d01cd6a4/55b7f267b5e049949baa0418c883be21/FLAG710318934 [2022-07-12 11:12:35,218 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:12:35,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2022-07-12 11:12:35,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d01cd6a4/55b7f267b5e049949baa0418c883be21/FLAG710318934 [2022-07-12 11:12:35,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d01cd6a4/55b7f267b5e049949baa0418c883be21 [2022-07-12 11:12:35,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:12:35,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:12:35,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:12:35,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:12:35,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:12:35,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:12:35" (1/1) ... [2022-07-12 11:12:35,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444e75f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:35, skipping insertion in model container [2022-07-12 11:12:35,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:12:35" (1/1) ... [2022-07-12 11:12:35,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:12:35,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:12:35,883 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_init_dynamic_harness-1.i[4505,4518] [2022-07-12 11:12:35,889 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_init_dynamic_harness-1.i[4565,4578] [2022-07-12 11:12:36,443 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:12:36,491 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,491 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,492 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,492 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,504 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,511 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:12:36,755 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:12:36,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:12:36,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:12:36,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:12:36,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:12:36,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:12:36,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:12:36,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:12:36,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:12:36,920 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:36,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:12:37,067 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:12:37,078 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_init_dynamic_harness-1.i[4505,4518] [2022-07-12 11:12:37,079 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_init_dynamic_harness-1.i[4565,4578] [2022-07-12 11:12:37,103 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:12:37,114 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,115 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,115 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,116 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,116 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,122 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,122 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,123 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,123 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:12:37,164 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:12:37,165 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:12:37,165 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:12:37,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:12:37,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:12:37,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:12:37,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:12:37,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:12:37,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:12:37,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,194 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:37,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:12:37,397 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:12:37,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37 WrapperNode [2022-07-12 11:12:37,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:12:37,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:12:37,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:12:37,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:12:37,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,559 INFO L137 Inliner]: procedures = 689, calls = 1517, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 742 [2022-07-12 11:12:37,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:12:37,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:12:37,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:12:37,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:12:37,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:12:37,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:12:37,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:12:37,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:12:37,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (1/1) ... [2022-07-12 11:12:37,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:12:37,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:37,665 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) [2022-07-12 11:12:37,680 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 [2022-07-12 11:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-12 11:12:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-12 11:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 11:12:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 11:12:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:12:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:12:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-12 11:12:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-12 11:12:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:12:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 11:12:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 11:12:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:12:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:12:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:12:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:12:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:12:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:12:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:12:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:12:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:12:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-07-12 11:12:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-07-12 11:12:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 11:12:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 11:12:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 11:12:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 11:12:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-12 11:12:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-12 11:12:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:12:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:12:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:12:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:12:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:12:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 11:12:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 11:12:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 11:12:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 11:12:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:12:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-12 11:12:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-12 11:12:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-12 11:12:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-12 11:12:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:12:38,023 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:12:38,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:12:38,794 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:12:38,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:12:38,801 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 11:12:38,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:12:38 BoogieIcfgContainer [2022-07-12 11:12:38,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:12:38,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:12:38,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:12:38,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:12:38,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:12:35" (1/3) ... [2022-07-12 11:12:38,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4875f68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:12:38, skipping insertion in model container [2022-07-12 11:12:38,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:37" (2/3) ... [2022-07-12 11:12:38,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4875f68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:12:38, skipping insertion in model container [2022-07-12 11:12:38,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:12:38" (3/3) ... [2022-07-12 11:12:38,811 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2022-07-12 11:12:38,823 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:12:38,824 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:12:38,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:12:38,897 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@527d891b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cdd8b64 [2022-07-12 11:12:38,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:12:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 133 states have (on average 1.255639097744361) internal successors, (167), 133 states have internal predecessors, (167), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-12 11:12:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 11:12:38,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:38,918 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-12 11:12:38,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1293047729, now seen corresponding path program 1 times [2022-07-12 11:12:38,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:38,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580665167] [2022-07-12 11:12:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:38,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:12:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:12:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:12:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 11:12:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:12:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:12:39,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:39,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580665167] [2022-07-12 11:12:39,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-12 11:12:39,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566374676] [2022-07-12 11:12:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:39,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:39,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:39,576 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) [2022-07-12 11:12:39,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:12:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:40,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 11:12:40,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-12 11:12:40,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:40,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566374676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:40,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:40,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 11:12:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522994131] [2022-07-12 11:12:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 11:12:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 11:12:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:12:40,146 INFO L87 Difference]: Start difference. First operand has 205 states, 133 states have (on average 1.255639097744361) internal successors, (167), 133 states have internal predecessors, (167), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 11:12:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:40,187 INFO L93 Difference]: Finished difference Result 401 states and 585 transitions. [2022-07-12 11:12:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 11:12:40,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-07-12 11:12:40,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:40,208 INFO L225 Difference]: With dead ends: 401 [2022-07-12 11:12:40,208 INFO L226 Difference]: Without dead ends: 198 [2022-07-12 11:12:40,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:12:40,216 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:40,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-12 11:12:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-07-12 11:12:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 125 states have (on average 1.224) internal successors, (153), 127 states have internal predecessors, (153), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-12 11:12:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-07-12 11:12:40,279 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 112 [2022-07-12 11:12:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:40,283 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-07-12 11:12:40,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 11:12:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-07-12 11:12:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 11:12:40,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:40,289 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-07-12 11:12:40,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 11:12:40,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 11:12:40,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:40,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1403140028, now seen corresponding path program 1 times [2022-07-12 11:12:40,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:40,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107261657] [2022-07-12 11:12:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:40,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:40,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:40,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842280509] [2022-07-12 11:12:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:40,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:40,599 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) [2022-07-12 11:12:40,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:12:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:41,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:12:41,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-12 11:12:41,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107261657] [2022-07-12 11:12:41,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:41,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842280509] [2022-07-12 11:12:41,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842280509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:41,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:41,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:12:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221915080] [2022-07-12 11:12:41,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:41,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:12:41,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:41,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:12:41,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:41,204 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:41,282 INFO L93 Difference]: Finished difference Result 302 states and 404 transitions. [2022-07-12 11:12:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:12:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2022-07-12 11:12:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:41,290 INFO L225 Difference]: With dead ends: 302 [2022-07-12 11:12:41,290 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 11:12:41,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:12:41,292 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 2 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:41,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1032 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 11:12:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-12 11:12:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 131 states have internal predecessors, (157), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2022-07-12 11:12:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2022-07-12 11:12:41,310 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 146 [2022-07-12 11:12:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:41,311 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2022-07-12 11:12:41,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2022-07-12 11:12:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 11:12:41,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:41,314 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-07-12 11:12:41,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:41,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 11:12:41,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash 494695836, now seen corresponding path program 1 times [2022-07-12 11:12:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:41,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840085044] [2022-07-12 11:12:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:41,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:41,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568081485] [2022-07-12 11:12:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:41,629 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) [2022-07-12 11:12:41,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:12:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:42,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 11:12:42,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:12:42,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-12 11:12:42,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:42,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840085044] [2022-07-12 11:12:42,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:42,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568081485] [2022-07-12 11:12:42,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568081485] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 11:12:42,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:12:42,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2022-07-12 11:12:42,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587313250] [2022-07-12 11:12:42,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:42,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:12:42,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:42,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:12:42,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:12:42,369 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-12 11:12:42,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:42,432 INFO L93 Difference]: Finished difference Result 211 states and 278 transitions. [2022-07-12 11:12:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:12:42,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2022-07-12 11:12:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:42,437 INFO L225 Difference]: With dead ends: 211 [2022-07-12 11:12:42,437 INFO L226 Difference]: Without dead ends: 209 [2022-07-12 11:12:42,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:12:42,440 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 4 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:42,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1029 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-07-12 11:12:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2022-07-12 11:12:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 135 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 275 transitions. [2022-07-12 11:12:42,483 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 275 transitions. Word has length 147 [2022-07-12 11:12:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:42,483 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 275 transitions. [2022-07-12 11:12:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-12 11:12:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 275 transitions. [2022-07-12 11:12:42,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 11:12:42,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:42,490 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-07-12 11:12:42,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:42,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 496542878, now seen corresponding path program 1 times [2022-07-12 11:12:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:42,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540382339] [2022-07-12 11:12:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:42,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:42,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244076463] [2022-07-12 11:12:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:42,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:42,775 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) [2022-07-12 11:12:42,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:12:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:43,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 11:12:43,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-12 11:12:43,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:43,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540382339] [2022-07-12 11:12:43,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:43,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244076463] [2022-07-12 11:12:43,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244076463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:43,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:43,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:12:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393311664] [2022-07-12 11:12:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:43,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:12:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:12:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:12:43,336 INFO L87 Difference]: Start difference. First operand 208 states and 275 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-12 11:12:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:43,410 INFO L93 Difference]: Finished difference Result 401 states and 523 transitions. [2022-07-12 11:12:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:12:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 147 [2022-07-12 11:12:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:43,412 INFO L225 Difference]: With dead ends: 401 [2022-07-12 11:12:43,412 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 11:12:43,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:12:43,413 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 13 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:43,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1257 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 11:12:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-12 11:12:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 135 states have internal predecessors, (159), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 274 transitions. [2022-07-12 11:12:43,424 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 274 transitions. Word has length 147 [2022-07-12 11:12:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 274 transitions. [2022-07-12 11:12:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-12 11:12:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 274 transitions. [2022-07-12 11:12:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:12:43,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:43,426 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 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] [2022-07-12 11:12:43,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:43,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:43,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:43,654 INFO L85 PathProgramCache]: Analyzing trace with hash -50417486, now seen corresponding path program 1 times [2022-07-12 11:12:43,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:43,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57223050] [2022-07-12 11:12:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:43,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:43,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901113047] [2022-07-12 11:12:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:43,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:43,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:43,720 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) [2022-07-12 11:12:43,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:12:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:44,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 11:12:44,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-12 11:12:44,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:44,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57223050] [2022-07-12 11:12:44,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901113047] [2022-07-12 11:12:44,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901113047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:44,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:44,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:12:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485391961] [2022-07-12 11:12:44,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:12:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:12:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:12:44,206 INFO L87 Difference]: Start difference. First operand 208 states and 274 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:12:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:44,223 INFO L93 Difference]: Finished difference Result 397 states and 520 transitions. [2022-07-12 11:12:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:12:44,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 149 [2022-07-12 11:12:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:44,225 INFO L225 Difference]: With dead ends: 397 [2022-07-12 11:12:44,226 INFO L226 Difference]: Without dead ends: 210 [2022-07-12 11:12:44,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:12:44,227 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:44,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-12 11:12:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-07-12 11:12:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 275 transitions. [2022-07-12 11:12:44,237 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 275 transitions. Word has length 149 [2022-07-12 11:12:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:44,237 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 275 transitions. [2022-07-12 11:12:44,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:12:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 275 transitions. [2022-07-12 11:12:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 11:12:44,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:44,239 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 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] [2022-07-12 11:12:44,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 11:12:44,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:44,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2024331122, now seen corresponding path program 1 times [2022-07-12 11:12:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:44,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821012362] [2022-07-12 11:12:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:44,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:44,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844551124] [2022-07-12 11:12:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:44,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:44,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:44,520 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) [2022-07-12 11:12:44,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:12:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:44,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 11:12:44,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-12 11:12:45,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-07-12 11:12:45,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821012362] [2022-07-12 11:12:45,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844551124] [2022-07-12 11:12:45,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844551124] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:12:45,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:12:45,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-12 11:12:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652197616] [2022-07-12 11:12:45,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:12:45,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 11:12:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 11:12:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:12:45,447 INFO L87 Difference]: Start difference. First operand 209 states and 275 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:45,597 INFO L93 Difference]: Finished difference Result 406 states and 527 transitions. [2022-07-12 11:12:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:12:45,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 153 [2022-07-12 11:12:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:45,600 INFO L225 Difference]: With dead ends: 406 [2022-07-12 11:12:45,600 INFO L226 Difference]: Without dead ends: 212 [2022-07-12 11:12:45,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:12:45,601 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 35 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:45,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1759 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-12 11:12:45,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-07-12 11:12:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 277 transitions. [2022-07-12 11:12:45,611 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 277 transitions. Word has length 153 [2022-07-12 11:12:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:45,611 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 277 transitions. [2022-07-12 11:12:45,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 277 transitions. [2022-07-12 11:12:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 11:12:45,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:45,613 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 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] [2022-07-12 11:12:45,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:45,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:45,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173810, now seen corresponding path program 2 times [2022-07-12 11:12:45,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:45,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991593826] [2022-07-12 11:12:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:45,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:45,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915365215] [2022-07-12 11:12:45,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:12:45,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:45,907 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) [2022-07-12 11:12:45,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:12:46,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:12:46,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:12:46,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 11:12:46,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 167 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-12 11:12:46,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-07-12 11:12:47,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:47,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991593826] [2022-07-12 11:12:47,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:47,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915365215] [2022-07-12 11:12:47,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915365215] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:12:47,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:12:47,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-12 11:12:47,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996408565] [2022-07-12 11:12:47,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:12:47,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:12:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:12:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:12:47,102 INFO L87 Difference]: Start difference. First operand 211 states and 277 transitions. Second operand has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:47,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:47,266 INFO L93 Difference]: Finished difference Result 410 states and 531 transitions. [2022-07-12 11:12:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:12:47,267 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 157 [2022-07-12 11:12:47,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:47,268 INFO L225 Difference]: With dead ends: 410 [2022-07-12 11:12:47,268 INFO L226 Difference]: Without dead ends: 214 [2022-07-12 11:12:47,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:12:47,270 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 29 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:47,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2010 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-12 11:12:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-07-12 11:12:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 137 states have (on average 1.197080291970803) internal successors, (164), 140 states have internal predecessors, (164), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 279 transitions. [2022-07-12 11:12:47,279 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 279 transitions. Word has length 157 [2022-07-12 11:12:47,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:47,279 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 279 transitions. [2022-07-12 11:12:47,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 279 transitions. [2022-07-12 11:12:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 11:12:47,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:47,282 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 3, 3, 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] [2022-07-12 11:12:47,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-12 11:12:47,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:47,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1663013362, now seen corresponding path program 3 times [2022-07-12 11:12:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:47,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122884387] [2022-07-12 11:12:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:47,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:47,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378002821] [2022-07-12 11:12:47,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:12:47,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:47,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:47,565 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) [2022-07-12 11:12:47,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:12:49,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-12 11:12:49,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:12:49,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 11:12:49,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-12 11:12:49,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-12 11:12:49,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122884387] [2022-07-12 11:12:49,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378002821] [2022-07-12 11:12:49,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378002821] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:12:49,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:12:49,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-12 11:12:49,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080380410] [2022-07-12 11:12:49,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:12:49,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 11:12:49,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 11:12:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:12:49,818 INFO L87 Difference]: Start difference. First operand 213 states and 279 transitions. Second operand has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 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) [2022-07-12 11:12:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:50,018 INFO L93 Difference]: Finished difference Result 414 states and 535 transitions. [2022-07-12 11:12:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:12:50,019 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 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 161 [2022-07-12 11:12:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:50,021 INFO L225 Difference]: With dead ends: 414 [2022-07-12 11:12:50,021 INFO L226 Difference]: Without dead ends: 216 [2022-07-12 11:12:50,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:12:50,022 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 37 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:50,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2513 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-12 11:12:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-07-12 11:12:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2022-07-12 11:12:50,031 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 161 [2022-07-12 11:12:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:50,031 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2022-07-12 11:12:50,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 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) [2022-07-12 11:12:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2022-07-12 11:12:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 11:12:50,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:50,033 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 3, 3, 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] [2022-07-12 11:12:50,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-12 11:12:50,255 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,SelfDestructingSolverStorable7 [2022-07-12 11:12:50,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash -650271310, now seen corresponding path program 4 times [2022-07-12 11:12:50,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:50,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130069346] [2022-07-12 11:12:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:50,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778325996] [2022-07-12 11:12:50,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 11:12:50,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:50,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:50,328 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) [2022-07-12 11:12:50,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:12:50,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 11:12:50,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:12:50,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 11:12:50,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-12 11:12:51,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-12 11:12:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:51,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130069346] [2022-07-12 11:12:51,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:51,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778325996] [2022-07-12 11:12:51,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778325996] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:12:51,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:12:51,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-12 11:12:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896455756] [2022-07-12 11:12:51,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:12:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:12:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:12:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:12:51,467 INFO L87 Difference]: Start difference. First operand 215 states and 281 transitions. Second operand has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:51,709 INFO L93 Difference]: Finished difference Result 418 states and 539 transitions. [2022-07-12 11:12:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:12:51,710 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 165 [2022-07-12 11:12:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:51,711 INFO L225 Difference]: With dead ends: 418 [2022-07-12 11:12:51,712 INFO L226 Difference]: Without dead ends: 218 [2022-07-12 11:12:51,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:12:51,713 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 38 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:51,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3266 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:12:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-12 11:12:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-07-12 11:12:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 144 states have internal predecessors, (168), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 283 transitions. [2022-07-12 11:12:51,722 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 283 transitions. Word has length 165 [2022-07-12 11:12:51,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:51,723 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 283 transitions. [2022-07-12 11:12:51,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 283 transitions. [2022-07-12 11:12:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 11:12:51,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:51,725 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 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] [2022-07-12 11:12:51,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:51,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:51,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:51,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1517193330, now seen corresponding path program 5 times [2022-07-12 11:12:51,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:51,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577229923] [2022-07-12 11:12:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:51,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:52,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873812946] [2022-07-12 11:12:52,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 11:12:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:52,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:52,007 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) [2022-07-12 11:12:52,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:12:52,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-12 11:12:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:12:52,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 11:12:52,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 215 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-12 11:12:53,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-07-12 11:12:53,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:53,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577229923] [2022-07-12 11:12:53,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:53,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873812946] [2022-07-12 11:12:53,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873812946] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:12:53,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:12:53,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-12 11:12:53,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626482417] [2022-07-12 11:12:53,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:12:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 11:12:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 11:12:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:12:53,647 INFO L87 Difference]: Start difference. First operand 217 states and 283 transitions. Second operand has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:53,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:53,912 INFO L93 Difference]: Finished difference Result 422 states and 543 transitions. [2022-07-12 11:12:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 11:12:53,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 169 [2022-07-12 11:12:53,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:53,923 INFO L225 Difference]: With dead ends: 422 [2022-07-12 11:12:53,923 INFO L226 Difference]: Without dead ends: 220 [2022-07-12 11:12:53,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:12:53,925 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 41 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:53,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3265 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:12:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-12 11:12:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-07-12 11:12:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 146 states have internal predecessors, (170), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-12 11:12:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 285 transitions. [2022-07-12 11:12:53,955 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 285 transitions. Word has length 169 [2022-07-12 11:12:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:53,955 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 285 transitions. [2022-07-12 11:12:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-12 11:12:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 285 transitions. [2022-07-12 11:12:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-12 11:12:53,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:53,958 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 3, 3, 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] [2022-07-12 11:12:53,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:54,165 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,SelfDestructingSolverStorable9 [2022-07-12 11:12:54,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1933379022, now seen corresponding path program 6 times [2022-07-12 11:12:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889605610] [2022-07-12 11:12:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:54,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:54,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573715074] [2022-07-12 11:12:54,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-12 11:12:54,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:54,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:54,269 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) [2022-07-12 11:12:54,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process