./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_byte_buf_write_be32_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:13:37,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:13:37,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:13:37,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:13:37,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:13:37,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:13:37,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:13:37,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:13:37,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:13:37,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:13:37,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:13:37,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:13:37,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:13:37,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:13:37,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:13:37,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:13:37,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:13:37,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:13:37,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:13:37,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:13:37,192 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:13:37,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:13:37,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:13:37,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:13:37,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:13:37,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:13:37,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:13:37,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:13:37,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:13:37,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:13:37,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:13:37,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:13:37,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:13:37,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:13:37,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:13:37,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:13:37,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:13:37,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:13:37,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:13:37,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:13:37,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:13:37,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:13:37,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:13:37,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:13:37,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:13:37,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:13:37,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:13:37,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:13:37,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:13:37,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:13:37,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:13:37,232 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:13:37,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:13:37,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:13:37,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:13:37,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:13:37,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:13:37,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:13:37,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:13:37,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:13:37,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:13:37,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:13:37,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:13:37,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:13:37,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:13:37,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:13:37,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:13:37,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:13:37,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:13:37,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:13:37,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:13:37,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:13:37,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:13:37,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2022-07-22 22:13:37,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:13:37,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:13:37,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:13:37,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:13:37,422 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:13:37,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2022-07-22 22:13:37,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4471255d3/5fc40b486eee488694fc65b8d526ef3c/FLAG4b03a90e7 [2022-07-22 22:13:38,001 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:13:38,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2022-07-22 22:13:38,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4471255d3/5fc40b486eee488694fc65b8d526ef3c/FLAG4b03a90e7 [2022-07-22 22:13:38,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4471255d3/5fc40b486eee488694fc65b8d526ef3c [2022-07-22 22:13:38,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:13:38,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:13:38,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:13:38,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:13:38,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:13:38,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:13:38" (1/1) ... [2022-07-22 22:13:38,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd00e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:38, skipping insertion in model container [2022-07-22 22:13:38,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:13:38" (1/1) ... [2022-07-22 22:13:38,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:13:38,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:13:38,816 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_byte_buf_write_be32_harness.i[4497,4510] [2022-07-22 22:13:38,821 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_byte_buf_write_be32_harness.i[4557,4570] [2022-07-22 22:13:39,404 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,404 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,404 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,405 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,405 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,426 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,427 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:13:39,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:13:39,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:13:39,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:13:39,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:13:39,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:13:39,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:13:39,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:13:39,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:13:39,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:13:39,774 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:13:39,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:13:39,969 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:13:39,977 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_byte_buf_write_be32_harness.i[4497,4510] [2022-07-22 22:13:39,977 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_byte_buf_write_be32_harness.i[4557,4570] [2022-07-22 22:13:39,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:39,999 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:40,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:40,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:40,001 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:40,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:13:40,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:13:40,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:13:40,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:13:40,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:13:40,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:13:40,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:13:40,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:13:40,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:13:40,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:13:40,031 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:13:40,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:40,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:40,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:13:40,341 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:13:40,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40 WrapperNode [2022-07-22 22:13:40,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:13:40,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:13:40,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:13:40,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:13:40,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,520 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2022-07-22 22:13:40,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:13:40,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:13:40,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:13:40,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:13:40,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:13:40,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:13:40,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:13:40,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:13:40,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (1/1) ... [2022-07-22 22:13:40,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:13:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:40,642 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) [2022-07-22 22:13:40,673 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 [2022-07-22 22:13:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-07-22 22:13:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-22 22:13:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-22 22:13:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2022-07-22 22:13:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2022-07-22 22:13:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:13:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:13:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:13:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:13:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:13:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:13:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:13:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:13:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:13:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-22 22:13:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-22 22:13:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:13:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:13:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:13:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:13:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:13:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:13:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:13:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:13:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-22 22:13:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-22 22:13:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:13:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:13:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-22 22:13:40,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-22 22:13:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:13:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:13:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:13:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:13:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:13:40,857 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:13:40,858 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:13:41,676 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:13:41,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:13:41,684 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 22:13:41,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:13:41 BoogieIcfgContainer [2022-07-22 22:13:41,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:13:41,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:13:41,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:13:41,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:13:41,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:13:38" (1/3) ... [2022-07-22 22:13:41,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4600c665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:13:41, skipping insertion in model container [2022-07-22 22:13:41,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:40" (2/3) ... [2022-07-22 22:13:41,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4600c665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:13:41, skipping insertion in model container [2022-07-22 22:13:41,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:13:41" (3/3) ... [2022-07-22 22:13:41,693 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2022-07-22 22:13:41,703 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:13:41,703 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:13:41,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:13:41,739 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@7c3a157e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b896564 [2022-07-22 22:13:41,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:13:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-22 22:13:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 22:13:41,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:41,751 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:41,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:41,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:41,754 INFO L85 PathProgramCache]: Analyzing trace with hash -187599697, now seen corresponding path program 1 times [2022-07-22 22:13:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:41,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991610795] [2022-07-22 22:13:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:13:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:13:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:13:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:13:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:13:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:13:42,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:42,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991610795] [2022-07-22 22:13:42,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991610795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:42,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:42,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:13:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254545682] [2022-07-22 22:13:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:13:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:13:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:13:42,306 INFO L87 Difference]: Start difference. First operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:42,480 INFO L93 Difference]: Finished difference Result 268 states and 377 transitions. [2022-07-22 22:13:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:13:42,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2022-07-22 22:13:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:42,489 INFO L225 Difference]: With dead ends: 268 [2022-07-22 22:13:42,489 INFO L226 Difference]: Without dead ends: 131 [2022-07-22 22:13:42,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:13:42,494 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 64 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:42,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 195 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:13:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-22 22:13:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-22 22:13:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-22 22:13:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 170 transitions. [2022-07-22 22:13:42,526 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 170 transitions. Word has length 90 [2022-07-22 22:13:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:42,526 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 170 transitions. [2022-07-22 22:13:42,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 170 transitions. [2022-07-22 22:13:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 22:13:42,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:42,530 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:42,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:13:42,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:42,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1729750963, now seen corresponding path program 1 times [2022-07-22 22:13:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:42,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105670978] [2022-07-22 22:13:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:13:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:13:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:13:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:13:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:13:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 22:13:42,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:42,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105670978] [2022-07-22 22:13:42,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105670978] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:42,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420522660] [2022-07-22 22:13:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:42,798 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) [2022-07-22 22:13:42,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:13:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:13:43,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:13:43,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:43,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420522660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:43,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:43,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-22 22:13:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252622717] [2022-07-22 22:13:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:43,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:13:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:13:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:13:43,312 INFO L87 Difference]: Start difference. First operand 131 states and 170 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 22:13:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:43,445 INFO L93 Difference]: Finished difference Result 240 states and 319 transitions. [2022-07-22 22:13:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:13:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 90 [2022-07-22 22:13:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:43,448 INFO L225 Difference]: With dead ends: 240 [2022-07-22 22:13:43,449 INFO L226 Difference]: Without dead ends: 134 [2022-07-22 22:13:43,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:13:43,450 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 198 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:43,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 483 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:13:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-22 22:13:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-07-22 22:13:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2022-07-22 22:13:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2022-07-22 22:13:43,463 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 90 [2022-07-22 22:13:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:43,463 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2022-07-22 22:13:43,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 22:13:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2022-07-22 22:13:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 22:13:43,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:43,466 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:43,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:43,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:43,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -77726936, now seen corresponding path program 1 times [2022-07-22 22:13:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:43,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824689287] [2022-07-22 22:13:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:43,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:13:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:13:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:13:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:13:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:13:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 22:13:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824689287] [2022-07-22 22:13:43,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824689287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630701571] [2022-07-22 22:13:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:43,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:43,922 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) [2022-07-22 22:13:43,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:13:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:13:44,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 22:13:44,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:44,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630701571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:44,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:44,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-22 22:13:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316000834] [2022-07-22 22:13:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:44,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:13:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:13:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:13:44,343 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:13:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:44,467 INFO L93 Difference]: Finished difference Result 235 states and 310 transitions. [2022-07-22 22:13:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:13:44,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 96 [2022-07-22 22:13:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:44,468 INFO L225 Difference]: With dead ends: 235 [2022-07-22 22:13:44,468 INFO L226 Difference]: Without dead ends: 134 [2022-07-22 22:13:44,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:13:44,470 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 215 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:44,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 485 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:13:44,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-22 22:13:44,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-07-22 22:13:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2022-07-22 22:13:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 175 transitions. [2022-07-22 22:13:44,478 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 175 transitions. Word has length 96 [2022-07-22 22:13:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:44,479 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 175 transitions. [2022-07-22 22:13:44,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:13:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 175 transitions. [2022-07-22 22:13:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:13:44,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:44,480 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2022-07-22 22:13:44,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:44,701 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,SelfDestructingSolverStorable2 [2022-07-22 22:13:44,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2089043619, now seen corresponding path program 2 times [2022-07-22 22:13:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:44,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682231954] [2022-07-22 22:13:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:44,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:13:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:13:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:13:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:13:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:13:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:13:44,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:44,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682231954] [2022-07-22 22:13:44,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682231954] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:44,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395588837] [2022-07-22 22:13:44,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:13:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:44,956 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) [2022-07-22 22:13:44,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:13:45,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:13:45,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:13:45,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 22:13:45,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:13:45,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:45,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395588837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:45,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:45,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-22 22:13:45,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733324521] [2022-07-22 22:13:45,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:13:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:13:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:13:45,725 INFO L87 Difference]: Start difference. First operand 134 states and 175 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:13:45,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:45,828 INFO L93 Difference]: Finished difference Result 225 states and 296 transitions. [2022-07-22 22:13:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:13:45,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 102 [2022-07-22 22:13:45,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:45,830 INFO L225 Difference]: With dead ends: 225 [2022-07-22 22:13:45,830 INFO L226 Difference]: Without dead ends: 131 [2022-07-22 22:13:45,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:13:45,831 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 80 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:45,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 921 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:13:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-22 22:13:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-22 22:13:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 85 states have internal predecessors, (100), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-22 22:13:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 169 transitions. [2022-07-22 22:13:45,839 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 169 transitions. Word has length 102 [2022-07-22 22:13:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:45,839 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 169 transitions. [2022-07-22 22:13:45,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:13:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 169 transitions. [2022-07-22 22:13:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:13:45,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:45,841 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:45,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:46,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 105172019, now seen corresponding path program 1 times [2022-07-22 22:13:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941679490] [2022-07-22 22:13:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:13:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:13:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:13:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:13:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-22 22:13:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:46,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941679490] [2022-07-22 22:13:46,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941679490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:46,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:46,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:13:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317949042] [2022-07-22 22:13:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:46,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:13:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:13:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:13:46,306 INFO L87 Difference]: Start difference. First operand 131 states and 169 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:13:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:46,723 INFO L93 Difference]: Finished difference Result 143 states and 186 transitions. [2022-07-22 22:13:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:13:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 114 [2022-07-22 22:13:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:46,725 INFO L225 Difference]: With dead ends: 143 [2022-07-22 22:13:46,725 INFO L226 Difference]: Without dead ends: 141 [2022-07-22 22:13:46,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:13:46,725 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 90 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:46,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 534 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:13:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-22 22:13:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2022-07-22 22:13:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 92 states have internal predecessors, (106), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-22 22:13:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2022-07-22 22:13:46,736 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 114 [2022-07-22 22:13:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2022-07-22 22:13:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:13:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2022-07-22 22:13:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 22:13:46,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:46,737 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:46,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 22:13:46,737 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1045435077, now seen corresponding path program 1 times [2022-07-22 22:13:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:46,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24574574] [2022-07-22 22:13:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:13:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:13:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:13:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:13:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:13:47,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:47,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24574574] [2022-07-22 22:13:47,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24574574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:47,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:47,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:13:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807030511] [2022-07-22 22:13:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:47,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:13:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:13:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:13:47,039 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:13:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:47,377 INFO L93 Difference]: Finished difference Result 280 states and 385 transitions. [2022-07-22 22:13:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:13:47,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-07-22 22:13:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:47,379 INFO L225 Difference]: With dead ends: 280 [2022-07-22 22:13:47,379 INFO L226 Difference]: Without dead ends: 165 [2022-07-22 22:13:47,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:13:47,380 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 144 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:47,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 284 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:13:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-22 22:13:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 145. [2022-07-22 22:13:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 97 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-22 22:13:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2022-07-22 22:13:47,390 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 118 [2022-07-22 22:13:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:47,390 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2022-07-22 22:13:47,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:13:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2022-07-22 22:13:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 22:13:47,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:47,392 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:47,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 22:13:47,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:47,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -787269639, now seen corresponding path program 1 times [2022-07-22 22:13:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:47,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38714464] [2022-07-22 22:13:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:13:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:13:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:13:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:13:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 22:13:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38714464] [2022-07-22 22:13:47,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38714464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423575181] [2022-07-22 22:13:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:47,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:47,772 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) [2022-07-22 22:13:47,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:13:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-22 22:13:48,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:48,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:13:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:13:48,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:48,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423575181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:48,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:48,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-07-22 22:13:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231612858] [2022-07-22 22:13:48,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:48,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:13:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:13:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:13:48,455 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-22 22:13:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:48,552 INFO L93 Difference]: Finished difference Result 288 states and 379 transitions. [2022-07-22 22:13:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:13:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 118 [2022-07-22 22:13:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:48,554 INFO L225 Difference]: With dead ends: 288 [2022-07-22 22:13:48,554 INFO L226 Difference]: Without dead ends: 164 [2022-07-22 22:13:48,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:13:48,555 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 23 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:48,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1451 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-07-22 22:13:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-22 22:13:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-22 22:13:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 115 states have internal predecessors, (136), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-22 22:13:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 213 transitions. [2022-07-22 22:13:48,563 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 213 transitions. Word has length 118 [2022-07-22 22:13:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:48,563 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 213 transitions. [2022-07-22 22:13:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-22 22:13:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 213 transitions. [2022-07-22 22:13:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 22:13:48,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:48,565 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:48,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:48,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:48,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1549122871, now seen corresponding path program 1 times [2022-07-22 22:13:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:48,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491111609] [2022-07-22 22:13:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:48,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:13:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:13:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:13:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:13:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:13:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:13:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-22 22:13:48,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:48,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491111609] [2022-07-22 22:13:48,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491111609] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:48,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931671388] [2022-07-22 22:13:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:48,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:48,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:48,934 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) [2022-07-22 22:13:48,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:13:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:13:49,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 22:13:49,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931671388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:49,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:49,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 22:13:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071802393] [2022-07-22 22:13:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:13:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:13:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:13:49,338 INFO L87 Difference]: Start difference. First operand 164 states and 213 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:49,356 INFO L93 Difference]: Finished difference Result 297 states and 397 transitions. [2022-07-22 22:13:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:13:49,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-07-22 22:13:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:49,357 INFO L225 Difference]: With dead ends: 297 [2022-07-22 22:13:49,357 INFO L226 Difference]: Without dead ends: 173 [2022-07-22 22:13:49,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:13:49,358 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 20 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:49,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 499 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:13:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-22 22:13:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2022-07-22 22:13:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 107 states have internal predecessors, (127), 36 states have call successors, (36), 13 states have call predecessors, (36), 13 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-22 22:13:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2022-07-22 22:13:49,364 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 118 [2022-07-22 22:13:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:49,364 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2022-07-22 22:13:49,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:49,364 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2022-07-22 22:13:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 22:13:49,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:49,365 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:13:49,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:49,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:49,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:49,585 INFO L85 PathProgramCache]: Analyzing trace with hash 351906291, now seen corresponding path program 2 times [2022-07-22 22:13:49,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:49,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110317890] [2022-07-22 22:13:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:49,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:13:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:13:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:13:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:13:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:13:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:13:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:13:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:13:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 22:13:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:49,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110317890] [2022-07-22 22:13:49,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110317890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:49,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089343613] [2022-07-22 22:13:49,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:13:49,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:49,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:49,813 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) [2022-07-22 22:13:49,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:13:50,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:13:50,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:13:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 22:13:50,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 22:13:50,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:13:51,333 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:13:51,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-22 22:13:51,339 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-22 22:13:51,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-22 22:13:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:13:51,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089343613] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:13:51,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:13:51,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-22 22:13:51,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724782243] [2022-07-22 22:13:51,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:13:51,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:13:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:51,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:13:51,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:13:51,372 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:13:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:53,302 INFO L93 Difference]: Finished difference Result 354 states and 476 transitions. [2022-07-22 22:13:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:13:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 122 [2022-07-22 22:13:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:53,304 INFO L225 Difference]: With dead ends: 354 [2022-07-22 22:13:53,305 INFO L226 Difference]: Without dead ends: 230 [2022-07-22 22:13:53,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 257 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=463, Invalid=2507, Unknown=0, NotChecked=0, Total=2970 [2022-07-22 22:13:53,306 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 271 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:53,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1050 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2339 Invalid, 0 Unknown, 223 Unchecked, 1.1s Time] [2022-07-22 22:13:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-22 22:13:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 196. [2022-07-22 22:13:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 140 states have (on average 1.207142857142857) internal successors, (169), 142 states have internal predecessors, (169), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-22 22:13:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 257 transitions. [2022-07-22 22:13:53,316 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 257 transitions. Word has length 122 [2022-07-22 22:13:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:53,316 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 257 transitions. [2022-07-22 22:13:53,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:13:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 257 transitions. [2022-07-22 22:13:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:13:53,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:53,318 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:13:53,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:53,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:53,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:53,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1293675952, now seen corresponding path program 1 times [2022-07-22 22:13:53,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:53,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669011047] [2022-07-22 22:13:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:13:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:13:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:13:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:13:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:13:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-22 22:13:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669011047] [2022-07-22 22:13:53,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669011047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080818352] [2022-07-22 22:13:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:53,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:53,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:53,752 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) [2022-07-22 22:13:53,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:13:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:13:54,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-22 22:13:54,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:54,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080818352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:54,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:54,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 22:13:54,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667281743] [2022-07-22 22:13:54,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:54,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:13:54,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:54,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:13:54,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:13:54,170 INFO L87 Difference]: Start difference. First operand 196 states and 257 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:54,206 INFO L93 Difference]: Finished difference Result 373 states and 498 transitions. [2022-07-22 22:13:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:13:54,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-22 22:13:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:54,208 INFO L225 Difference]: With dead ends: 373 [2022-07-22 22:13:54,208 INFO L226 Difference]: Without dead ends: 207 [2022-07-22 22:13:54,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:13:54,210 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 9 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:54,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 492 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:13:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-22 22:13:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2022-07-22 22:13:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.1901408450704225) internal successors, (169), 144 states have internal predecessors, (169), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-22 22:13:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2022-07-22 22:13:54,224 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 124 [2022-07-22 22:13:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:54,224 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2022-07-22 22:13:54,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2022-07-22 22:13:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:13:54,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:54,227 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:54,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:54,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash 445434604, now seen corresponding path program 1 times [2022-07-22 22:13:54,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:54,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394869184] [2022-07-22 22:13:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:13:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:13:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:13:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:13:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:13:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 22:13:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394869184] [2022-07-22 22:13:54,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394869184] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035567176] [2022-07-22 22:13:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:54,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:54,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:54,637 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) [2022-07-22 22:13:54,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:13:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:13:55,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 22:13:55,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:55,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035567176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:55,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:55,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 22:13:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047048263] [2022-07-22 22:13:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:55,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:13:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:55,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:13:55,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:13:55,070 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:55,089 INFO L93 Difference]: Finished difference Result 380 states and 510 transitions. [2022-07-22 22:13:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:13:55,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-22 22:13:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:55,091 INFO L225 Difference]: With dead ends: 380 [2022-07-22 22:13:55,091 INFO L226 Difference]: Without dead ends: 212 [2022-07-22 22:13:55,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:13:55,092 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 34 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:55,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 490 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:13:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-22 22:13:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2022-07-22 22:13:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 138 states have (on average 1.1666666666666667) internal successors, (161), 140 states have internal predecessors, (161), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-22 22:13:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2022-07-22 22:13:55,105 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 249 transitions. Word has length 124 [2022-07-22 22:13:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:55,105 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 249 transitions. [2022-07-22 22:13:55,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:13:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 249 transitions. [2022-07-22 22:13:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:13:55,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:55,106 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:13:55,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:55,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:13:55,326 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash 416934314, now seen corresponding path program 2 times [2022-07-22 22:13:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39921063] [2022-07-22 22:13:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:13:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:13:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:13:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:13:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:13:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 22:13:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:55,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39921063] [2022-07-22 22:13:55,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39921063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:55,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863774410] [2022-07-22 22:13:55,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:13:55,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:55,706 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) [2022-07-22 22:13:55,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:13:56,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:13:56,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:13:56,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 22:13:56,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 22:13:56,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:13:56,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-22 22:13:56,977 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:13:56,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-22 22:13:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:13:57,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863774410] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:13:57,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:13:57,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 25 [2022-07-22 22:13:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417859197] [2022-07-22 22:13:57,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:13:57,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 22:13:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 22:13:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:13:57,005 INFO L87 Difference]: Start difference. First operand 194 states and 249 transitions. Second operand has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 22:13:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:58,323 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2022-07-22 22:13:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 22:13:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-07-22 22:13:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:58,325 INFO L225 Difference]: With dead ends: 334 [2022-07-22 22:13:58,325 INFO L226 Difference]: Without dead ends: 249 [2022-07-22 22:13:58,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 255 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 22:13:58,326 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 281 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:58,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 686 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1353 Invalid, 0 Unknown, 364 Unchecked, 0.9s Time] [2022-07-22 22:13:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-22 22:13:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 229. [2022-07-22 22:13:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 170 states have internal predecessors, (195), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (59), 41 states have call predecessors, (59), 41 states have call successors, (59) [2022-07-22 22:13:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 296 transitions. [2022-07-22 22:13:58,335 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 296 transitions. Word has length 124 [2022-07-22 22:13:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:58,335 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 296 transitions. [2022-07-22 22:13:58,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 22:13:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 296 transitions. [2022-07-22 22:13:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:13:58,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:58,337 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:13:58,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:58,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:58,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:58,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:58,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1429579026, now seen corresponding path program 1 times [2022-07-22 22:13:58,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:58,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747413736] [2022-07-22 22:13:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:58,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:13:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:13:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:13:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:13:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:13:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:13:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:13:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:13:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:13:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 22:13:59,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:59,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747413736] [2022-07-22 22:13:59,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747413736] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:59,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522969121] [2022-07-22 22:13:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:59,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:59,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:59,036 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) [2022-07-22 22:13:59,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:13:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-22 22:13:59,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:59,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:13:59,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:13:59,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-07-22 22:13:59,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:13:59,887 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-22 22:13:59,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 1 [2022-07-22 22:13:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 22:13:59,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:59,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522969121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:59,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:59,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2022-07-22 22:13:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943924211] [2022-07-22 22:13:59,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:59,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:13:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:13:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:13:59,893 INFO L87 Difference]: Start difference. First operand 229 states and 296 transitions. Second operand has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:14:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:00,046 INFO L93 Difference]: Finished difference Result 508 states and 663 transitions. [2022-07-22 22:14:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 22:14:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 124 [2022-07-22 22:14:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:00,048 INFO L225 Difference]: With dead ends: 508 [2022-07-22 22:14:00,048 INFO L226 Difference]: Without dead ends: 311 [2022-07-22 22:14:00,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:14:00,049 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 44 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:00,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1716 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 147 Unchecked, 0.1s Time] [2022-07-22 22:14:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-22 22:14:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 267. [2022-07-22 22:14:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 200 states have (on average 1.17) internal successors, (234), 204 states have internal predecessors, (234), 44 states have call successors, (44), 19 states have call predecessors, (44), 22 states have return successors, (64), 43 states have call predecessors, (64), 43 states have call successors, (64) [2022-07-22 22:14:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2022-07-22 22:14:00,059 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 124 [2022-07-22 22:14:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:00,059 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2022-07-22 22:14:00,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:14:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2022-07-22 22:14:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:14:00,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:00,061 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:14:00,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:00,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:14:00,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:00,274 INFO L85 PathProgramCache]: Analyzing trace with hash 906813484, now seen corresponding path program 1 times [2022-07-22 22:14:00,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:00,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555439975] [2022-07-22 22:14:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:00,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:14:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:14:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:14:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:14:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 22:14:00,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:00,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555439975] [2022-07-22 22:14:00,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555439975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:00,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642712717] [2022-07-22 22:14:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:00,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:00,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:00,848 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) [2022-07-22 22:14:00,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:14:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-22 22:14:01,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:01,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:14:01,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:14:01,959 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-22 22:14:01,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-22 22:14:01,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-22 22:14:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:14:01,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:14:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642712717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:01,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:14:01,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 29 [2022-07-22 22:14:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85129268] [2022-07-22 22:14:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:01,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:14:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:14:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:14:01,995 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:14:02,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:02,351 INFO L93 Difference]: Finished difference Result 521 states and 679 transitions. [2022-07-22 22:14:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:14:02,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 124 [2022-07-22 22:14:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:02,353 INFO L225 Difference]: With dead ends: 521 [2022-07-22 22:14:02,353 INFO L226 Difference]: Without dead ends: 319 [2022-07-22 22:14:02,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 22:14:02,354 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 208 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:02,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 954 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 392 Invalid, 0 Unknown, 582 Unchecked, 0.3s Time] [2022-07-22 22:14:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-22 22:14:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 285. [2022-07-22 22:14:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 216 states have (on average 1.1574074074074074) internal successors, (250), 221 states have internal predecessors, (250), 44 states have call successors, (44), 20 states have call predecessors, (44), 24 states have return successors, (64), 43 states have call predecessors, (64), 43 states have call successors, (64) [2022-07-22 22:14:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2022-07-22 22:14:02,370 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 124 [2022-07-22 22:14:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:02,370 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2022-07-22 22:14:02,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:14:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2022-07-22 22:14:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 22:14:02,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:02,373 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 22:14:02,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:14:02,591 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -637961624, now seen corresponding path program 3 times [2022-07-22 22:14:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:02,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304297620] [2022-07-22 22:14:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:14:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:14:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:14:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:14:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:14:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-22 22:14:02,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:02,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304297620] [2022-07-22 22:14:02,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304297620] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:02,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107153516] [2022-07-22 22:14:02,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:14:02,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:02,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:02,825 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:02,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:14:03,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 22:14:03,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:14:03,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 22:14:03,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 85 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:14:04,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:04,287 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:14:04,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-22 22:14:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 22:14:04,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107153516] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:04,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:04,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 23 [2022-07-22 22:14:04,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307504439] [2022-07-22 22:14:04,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:04,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 22:14:04,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 22:14:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:14:04,313 INFO L87 Difference]: Start difference. First operand 285 states and 358 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:14:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:05,764 INFO L93 Difference]: Finished difference Result 483 states and 626 transitions. [2022-07-22 22:14:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 22:14:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 128 [2022-07-22 22:14:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:05,766 INFO L225 Difference]: With dead ends: 483 [2022-07-22 22:14:05,766 INFO L226 Difference]: Without dead ends: 271 [2022-07-22 22:14:05,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 266 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 22:14:05,768 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 206 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:05,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 901 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1857 Invalid, 0 Unknown, 166 Unchecked, 0.9s Time] [2022-07-22 22:14:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-22 22:14:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 264. [2022-07-22 22:14:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 195 states have internal predecessors, (217), 47 states have call successors, (47), 22 states have call predecessors, (47), 23 states have return successors, (68), 46 states have call predecessors, (68), 46 states have call successors, (68) [2022-07-22 22:14:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 332 transitions. [2022-07-22 22:14:05,778 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 332 transitions. Word has length 128 [2022-07-22 22:14:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 332 transitions. [2022-07-22 22:14:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:14:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 332 transitions. [2022-07-22 22:14:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:14:05,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:05,780 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:14:05,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:06,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 22:14:06,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1935170269, now seen corresponding path program 1 times [2022-07-22 22:14:06,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:06,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819639481] [2022-07-22 22:14:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:14:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:14:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:14:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:14:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 22:14:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:06,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819639481] [2022-07-22 22:14:06,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819639481] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:06,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832269938] [2022-07-22 22:14:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:06,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:06,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:06,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:06,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:14:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:06,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-22 22:14:06,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:06,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:14:06,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:06,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-22 22:14:07,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:07,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-22 22:14:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 64 proven. 43 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:14:07,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:09,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832269938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:09,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:14:09,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 25 [2022-07-22 22:14:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056527483] [2022-07-22 22:14:09,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 22:14:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 22:14:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=899, Unknown=1, NotChecked=0, Total=992 [2022-07-22 22:14:09,317 INFO L87 Difference]: Start difference. First operand 264 states and 332 transitions. Second operand has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 9 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-22 22:14:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:11,133 INFO L93 Difference]: Finished difference Result 548 states and 702 transitions. [2022-07-22 22:14:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-22 22:14:11,133 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 9 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) Word has length 134 [2022-07-22 22:14:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:11,135 INFO L225 Difference]: With dead ends: 548 [2022-07-22 22:14:11,135 INFO L226 Difference]: Without dead ends: 348 [2022-07-22 22:14:11,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 181 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=374, Invalid=4047, Unknown=1, NotChecked=0, Total=4422 [2022-07-22 22:14:11,137 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 145 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 789 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:11,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1536 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2175 Invalid, 0 Unknown, 789 Unchecked, 1.0s Time] [2022-07-22 22:14:11,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-07-22 22:14:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 290. [2022-07-22 22:14:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 212 states have (on average 1.1273584905660377) internal successors, (239), 216 states have internal predecessors, (239), 51 states have call successors, (51), 24 states have call predecessors, (51), 26 states have return successors, (65), 49 states have call predecessors, (65), 50 states have call successors, (65) [2022-07-22 22:14:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 355 transitions. [2022-07-22 22:14:11,150 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 355 transitions. Word has length 134 [2022-07-22 22:14:11,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:11,150 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 355 transitions. [2022-07-22 22:14:11,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 9 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-22 22:14:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 355 transitions. [2022-07-22 22:14:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 22:14:11,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:11,152 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:14:11,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 22:14:11,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 311540546, now seen corresponding path program 1 times [2022-07-22 22:14:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:11,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637550507] [2022-07-22 22:14:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:14:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:14:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-22 22:14:11,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:11,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637550507] [2022-07-22 22:14:11,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637550507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:11,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:11,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:14:11,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776684944] [2022-07-22 22:14:11,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:11,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:14:11,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:14:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:14:11,573 INFO L87 Difference]: Start difference. First operand 290 states and 355 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:14:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:12,007 INFO L93 Difference]: Finished difference Result 367 states and 453 transitions. [2022-07-22 22:14:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:14:12,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-22 22:14:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:12,009 INFO L225 Difference]: With dead ends: 367 [2022-07-22 22:14:12,009 INFO L226 Difference]: Without dead ends: 318 [2022-07-22 22:14:12,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:12,010 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 140 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:12,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 395 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:14:12,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-22 22:14:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 295. [2022-07-22 22:14:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 216 states have (on average 1.125) internal successors, (243), 220 states have internal predecessors, (243), 51 states have call successors, (51), 24 states have call predecessors, (51), 27 states have return successors, (67), 50 states have call predecessors, (67), 50 states have call successors, (67) [2022-07-22 22:14:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 361 transitions. [2022-07-22 22:14:12,024 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 361 transitions. Word has length 137 [2022-07-22 22:14:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:12,026 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 361 transitions. [2022-07-22 22:14:12,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:14:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 361 transitions. [2022-07-22 22:14:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 22:14:12,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:12,028 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:12,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 22:14:12,028 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2001620082, now seen corresponding path program 1 times [2022-07-22 22:14:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:12,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116237421] [2022-07-22 22:14:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:12,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:14:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:14:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:14:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:14:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 22:14:12,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116237421] [2022-07-22 22:14:12,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116237421] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760423449] [2022-07-22 22:14:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:12,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:12,372 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:12,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:14:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-22 22:14:12,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:12,966 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:14:12,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-22 22:14:13,032 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-22 22:14:13,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2022-07-22 22:14:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 79 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:13,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:14:14,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760423449] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:14,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:14,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 11] total 34 [2022-07-22 22:14:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283779464] [2022-07-22 22:14:14,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 22:14:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 22:14:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:14:14,248 INFO L87 Difference]: Start difference. First operand 295 states and 361 transitions. Second operand has 34 states, 32 states have (on average 4.40625) internal successors, (141), 32 states have internal predecessors, (141), 10 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-22 22:14:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:16,958 INFO L93 Difference]: Finished difference Result 480 states and 607 transitions. [2022-07-22 22:14:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:14:16,958 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.40625) internal successors, (141), 32 states have internal predecessors, (141), 10 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 136 [2022-07-22 22:14:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:16,974 INFO L225 Difference]: With dead ends: 480 [2022-07-22 22:14:16,974 INFO L226 Difference]: Without dead ends: 396 [2022-07-22 22:14:16,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 275 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=436, Invalid=3346, Unknown=0, NotChecked=0, Total=3782 [2022-07-22 22:14:16,976 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 254 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:16,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 846 Invalid, 3635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2912 Invalid, 0 Unknown, 551 Unchecked, 1.7s Time] [2022-07-22 22:14:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-22 22:14:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 350. [2022-07-22 22:14:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 263 states have (on average 1.1254752851711027) internal successors, (296), 268 states have internal predecessors, (296), 54 states have call successors, (54), 28 states have call predecessors, (54), 32 states have return successors, (75), 53 states have call predecessors, (75), 53 states have call successors, (75) [2022-07-22 22:14:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 425 transitions. [2022-07-22 22:14:16,994 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 425 transitions. Word has length 136 [2022-07-22 22:14:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:16,996 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 425 transitions. [2022-07-22 22:14:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.40625) internal successors, (141), 32 states have internal predecessors, (141), 10 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-22 22:14:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 425 transitions. [2022-07-22 22:14:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 22:14:16,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:16,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:17,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:17,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:17,217 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1625304456, now seen corresponding path program 1 times [2022-07-22 22:14:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:17,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193215161] [2022-07-22 22:14:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:14:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:14:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:14:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:14:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 22:14:17,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193215161] [2022-07-22 22:14:17,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193215161] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144146124] [2022-07-22 22:14:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:17,776 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:17,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:14:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-22 22:14:18,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:18,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:14:20,555 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:14:20,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-22 22:14:20,613 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:14:20,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-22 22:14:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 50 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 22:14:27,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:14:27,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144146124] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:27,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:27,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 9] total 40 [2022-07-22 22:14:27,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725272576] [2022-07-22 22:14:27,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:27,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 22:14:27,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 22:14:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1434, Unknown=1, NotChecked=0, Total=1560 [2022-07-22 22:14:27,589 INFO L87 Difference]: Start difference. First operand 350 states and 425 transitions. Second operand has 40 states, 36 states have (on average 4.666666666666667) internal successors, (168), 37 states have internal predecessors, (168), 17 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) [2022-07-22 22:14:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:31,921 INFO L93 Difference]: Finished difference Result 674 states and 858 transitions. [2022-07-22 22:14:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-22 22:14:31,947 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.666666666666667) internal successors, (168), 37 states have internal predecessors, (168), 17 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) Word has length 136 [2022-07-22 22:14:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:31,950 INFO L225 Difference]: With dead ends: 674 [2022-07-22 22:14:31,950 INFO L226 Difference]: Without dead ends: 436 [2022-07-22 22:14:31,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 287 SyntacticMatches, 8 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=753, Invalid=7078, Unknown=1, NotChecked=0, Total=7832 [2022-07-22 22:14:31,955 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 581 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 4896 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 6743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 4896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1415 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:31,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 1114 Invalid, 6743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 4896 Invalid, 0 Unknown, 1415 Unchecked, 2.8s Time] [2022-07-22 22:14:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-07-22 22:14:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 368. [2022-07-22 22:14:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 277 states have (on average 1.1046931407942238) internal successors, (306), 280 states have internal predecessors, (306), 56 states have call successors, (56), 30 states have call predecessors, (56), 34 states have return successors, (74), 57 states have call predecessors, (74), 55 states have call successors, (74) [2022-07-22 22:14:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 436 transitions. [2022-07-22 22:14:31,979 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 436 transitions. Word has length 136 [2022-07-22 22:14:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:31,979 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 436 transitions. [2022-07-22 22:14:31,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.666666666666667) internal successors, (168), 37 states have internal predecessors, (168), 17 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) [2022-07-22 22:14:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 436 transitions. [2022-07-22 22:14:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 22:14:31,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:31,983 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 22:14:32,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:32,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:32,204 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:32,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash -911833216, now seen corresponding path program 1 times [2022-07-22 22:14:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:32,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320281037] [2022-07-22 22:14:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:32,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:14:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:14:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:14:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:14:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:14:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:14:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-22 22:14:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320281037] [2022-07-22 22:14:32,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320281037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:32,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:32,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:14:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302774929] [2022-07-22 22:14:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:14:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:14:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:14:32,406 INFO L87 Difference]: Start difference. First operand 368 states and 436 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 22:14:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:32,780 INFO L93 Difference]: Finished difference Result 466 states and 557 transitions. [2022-07-22 22:14:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:14:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 137 [2022-07-22 22:14:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:32,782 INFO L225 Difference]: With dead ends: 466 [2022-07-22 22:14:32,782 INFO L226 Difference]: Without dead ends: 364 [2022-07-22 22:14:32,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:14:32,783 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:32,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 332 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:14:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-07-22 22:14:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 359. [2022-07-22 22:14:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 269 states have (on average 1.096654275092937) internal successors, (295), 271 states have internal predecessors, (295), 56 states have call successors, (56), 30 states have call predecessors, (56), 33 states have return successors, (73), 57 states have call predecessors, (73), 55 states have call successors, (73) [2022-07-22 22:14:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 424 transitions. [2022-07-22 22:14:32,798 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 424 transitions. Word has length 137 [2022-07-22 22:14:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:32,799 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 424 transitions. [2022-07-22 22:14:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 22:14:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 424 transitions. [2022-07-22 22:14:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 22:14:32,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:32,800 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 22:14:32,800 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -746351932, now seen corresponding path program 1 times [2022-07-22 22:14:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:32,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398563149] [2022-07-22 22:14:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:32,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:14:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:14:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:14:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:14:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:14:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:14:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 22:14:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:33,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398563149] [2022-07-22 22:14:33,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398563149] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:33,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582671435] [2022-07-22 22:14:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:33,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:33,250 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:33,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:14:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 136 conjunts are in the unsatisfiable core [2022-07-22 22:14:33,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:33,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:14:33,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:14:39,166 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-22 22:14:39,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 51 [2022-07-22 22:14:39,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-07-22 22:14:39,202 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:14:39,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2022-07-22 22:14:39,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:14:39,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:39,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:14:41,375 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:14:41,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-22 22:14:41,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:41,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:14:41,422 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:14:41,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-22 22:14:41,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:14:41,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-22 22:14:41,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:41,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-22 22:14:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 60 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 22:14:43,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 22:14:44,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582671435] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:44,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:44,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 41, 11] total 65 [2022-07-22 22:14:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874089221] [2022-07-22 22:14:44,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:44,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-22 22:14:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-22 22:14:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3894, Unknown=3, NotChecked=0, Total=4160 [2022-07-22 22:14:44,136 INFO L87 Difference]: Start difference. First operand 359 states and 424 transitions. Second operand has 65 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 59 states have internal predecessors, (219), 21 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (41), 14 states have call predecessors, (41), 19 states have call successors, (41) [2022-07-22 22:14:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:55,319 INFO L93 Difference]: Finished difference Result 606 states and 739 transitions. [2022-07-22 22:14:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-22 22:14:55,320 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 59 states have internal predecessors, (219), 21 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (41), 14 states have call predecessors, (41), 19 states have call successors, (41) Word has length 137 [2022-07-22 22:14:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:55,321 INFO L225 Difference]: With dead ends: 606 [2022-07-22 22:14:55,321 INFO L226 Difference]: Without dead ends: 407 [2022-07-22 22:14:55,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 258 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4279 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=777, Invalid=11649, Unknown=6, NotChecked=0, Total=12432 [2022-07-22 22:14:55,339 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 306 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 5001 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 7471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 5001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2189 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:55,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1725 Invalid, 7471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 5001 Invalid, 0 Unknown, 2189 Unchecked, 2.8s Time] [2022-07-22 22:14:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-22 22:14:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 348. [2022-07-22 22:14:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 258 states have (on average 1.0968992248062015) internal successors, (283), 260 states have internal predecessors, (283), 56 states have call successors, (56), 30 states have call predecessors, (56), 33 states have return successors, (71), 57 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-22 22:14:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2022-07-22 22:14:55,368 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 137 [2022-07-22 22:14:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:55,369 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2022-07-22 22:14:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 59 states have internal predecessors, (219), 21 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (41), 14 states have call predecessors, (41), 19 states have call successors, (41) [2022-07-22 22:14:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2022-07-22 22:14:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 22:14:55,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:55,370 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:14:55,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:55,571 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 331249879, now seen corresponding path program 1 times [2022-07-22 22:14:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:55,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403541838] [2022-07-22 22:14:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:55,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:14:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:14:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-22 22:14:55,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:55,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403541838] [2022-07-22 22:14:55,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403541838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:55,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:55,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:14:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980652967] [2022-07-22 22:14:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:55,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:14:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:14:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:14:55,814 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:14:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:56,317 INFO L93 Difference]: Finished difference Result 364 states and 430 transitions. [2022-07-22 22:14:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:14:56,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2022-07-22 22:14:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:56,320 INFO L225 Difference]: With dead ends: 364 [2022-07-22 22:14:56,321 INFO L226 Difference]: Without dead ends: 362 [2022-07-22 22:14:56,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:14:56,321 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 188 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 292 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:14:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-22 22:14:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 352. [2022-07-22 22:14:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 261 states have (on average 1.0957854406130267) internal successors, (286), 263 states have internal predecessors, (286), 56 states have call successors, (56), 31 states have call predecessors, (56), 34 states have return successors, (71), 57 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-22 22:14:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 413 transitions. [2022-07-22 22:14:56,342 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 413 transitions. Word has length 138 [2022-07-22 22:14:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:56,343 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 413 transitions. [2022-07-22 22:14:56,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:14:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 413 transitions. [2022-07-22 22:14:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 22:14:56,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:56,344 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:56,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 22:14:56,344 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1515857075, now seen corresponding path program 1 times [2022-07-22 22:14:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:56,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151643237] [2022-07-22 22:14:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:14:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:14:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:14:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:14:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 22:14:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151643237] [2022-07-22 22:14:56,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151643237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:56,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:56,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:14:56,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789689271] [2022-07-22 22:14:56,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:56,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:14:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:14:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:56,539 INFO L87 Difference]: Start difference. First operand 352 states and 413 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:14:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:57,124 INFO L93 Difference]: Finished difference Result 360 states and 421 transitions. [2022-07-22 22:14:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:14:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 138 [2022-07-22 22:14:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:57,127 INFO L225 Difference]: With dead ends: 360 [2022-07-22 22:14:57,127 INFO L226 Difference]: Without dead ends: 358 [2022-07-22 22:14:57,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:14:57,128 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 96 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:57,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 652 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:14:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-22 22:14:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2022-07-22 22:14:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 264 states have (on average 1.0946969696969697) internal successors, (289), 266 states have internal predecessors, (289), 57 states have call successors, (57), 32 states have call predecessors, (57), 35 states have return successors, (72), 58 states have call predecessors, (72), 56 states have call successors, (72) [2022-07-22 22:14:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 418 transitions. [2022-07-22 22:14:57,144 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 418 transitions. Word has length 138 [2022-07-22 22:14:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:57,144 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 418 transitions. [2022-07-22 22:14:57,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:14:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 418 transitions. [2022-07-22 22:14:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 22:14:57,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:57,146 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:57,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 22:14:57,147 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:57,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1194285255, now seen corresponding path program 1 times [2022-07-22 22:14:57,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:57,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806361964] [2022-07-22 22:14:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:14:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:14:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:14:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:14:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-22 22:14:57,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:57,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806361964] [2022-07-22 22:14:57,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806361964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:57,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:57,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:14:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014257876] [2022-07-22 22:14:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:57,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:14:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:14:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:14:57,796 INFO L87 Difference]: Start difference. First operand 357 states and 418 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 16 states have internal predecessors, (60), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-22 22:14:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:58,855 INFO L93 Difference]: Finished difference Result 392 states and 468 transitions. [2022-07-22 22:14:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:14:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 16 states have internal predecessors, (60), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 144 [2022-07-22 22:14:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:58,857 INFO L225 Difference]: With dead ends: 392 [2022-07-22 22:14:58,857 INFO L226 Difference]: Without dead ends: 390 [2022-07-22 22:14:58,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:14:58,858 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 206 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:58,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 368 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 22:14:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-22 22:14:58,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 368. [2022-07-22 22:14:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 272 states have (on average 1.0955882352941178) internal successors, (298), 274 states have internal predecessors, (298), 59 states have call successors, (59), 33 states have call predecessors, (59), 36 states have return successors, (74), 60 states have call predecessors, (74), 58 states have call successors, (74) [2022-07-22 22:14:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 431 transitions. [2022-07-22 22:14:58,876 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 431 transitions. Word has length 144 [2022-07-22 22:14:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:58,876 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 431 transitions. [2022-07-22 22:14:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 16 states have internal predecessors, (60), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-22 22:14:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 431 transitions. [2022-07-22 22:14:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 22:14:58,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:58,878 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 22:14:58,878 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -719576038, now seen corresponding path program 1 times [2022-07-22 22:14:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:58,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758311122] [2022-07-22 22:14:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:14:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:14:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:14:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:14:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:14:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:14:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:14:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:14:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:14:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:14:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:14:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 22:14:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 41 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-22 22:14:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:59,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758311122] [2022-07-22 22:14:59,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758311122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:59,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063556287] [2022-07-22 22:14:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:59,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:59,361 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:59,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:14:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:59,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2794 conjuncts, 138 conjunts are in the unsatisfiable core [2022-07-22 22:14:59,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:59,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:15:00,255 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:00,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-22 22:15:00,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 22:15:00,271 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:00,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-22 22:15:00,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-22 22:15:00,335 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:00,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-22 22:15:00,346 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:00,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-07-22 22:15:00,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:00,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:00,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-22 22:15:00,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:06,271 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:15:06,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2022-07-22 22:15:06,277 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:15:06,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2022-07-22 22:15:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 69 proven. 92 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:15:06,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:07,729 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:15:07,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-22 22:15:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 22:15:07,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063556287] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:15:07,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:15:07,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 48, 21] total 80 [2022-07-22 22:15:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039961754] [2022-07-22 22:15:07,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:07,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-07-22 22:15:07,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-07-22 22:15:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=6052, Unknown=1, NotChecked=0, Total=6320 [2022-07-22 22:15:07,960 INFO L87 Difference]: Start difference. First operand 368 states and 431 transitions. Second operand has 80 states, 71 states have (on average 2.9577464788732395) internal successors, (210), 68 states have internal predecessors, (210), 22 states have call successors, (47), 10 states have call predecessors, (47), 17 states have return successors, (41), 19 states have call predecessors, (41), 20 states have call successors, (41) [2022-07-22 22:15:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:16,617 INFO L93 Difference]: Finished difference Result 618 states and 743 transitions. [2022-07-22 22:15:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-22 22:15:16,622 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 71 states have (on average 2.9577464788732395) internal successors, (210), 68 states have internal predecessors, (210), 22 states have call successors, (47), 10 states have call predecessors, (47), 17 states have return successors, (41), 19 states have call predecessors, (41), 20 states have call successors, (41) Word has length 145 [2022-07-22 22:15:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:16,624 INFO L225 Difference]: With dead ends: 618 [2022-07-22 22:15:16,624 INFO L226 Difference]: Without dead ends: 430 [2022-07-22 22:15:16,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 265 SyntacticMatches, 5 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7800 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1243, Invalid=24195, Unknown=2, NotChecked=0, Total=25440 [2022-07-22 22:15:16,628 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 257 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 7439 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 9383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 7439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1711 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:16,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2710 Invalid, 9383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 7439 Invalid, 0 Unknown, 1711 Unchecked, 3.4s Time] [2022-07-22 22:15:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-22 22:15:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 400. [2022-07-22 22:15:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 297 states have (on average 1.0909090909090908) internal successors, (324), 300 states have internal predecessors, (324), 62 states have call successors, (62), 36 states have call predecessors, (62), 40 states have return successors, (80), 63 states have call predecessors, (80), 61 states have call successors, (80) [2022-07-22 22:15:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 466 transitions. [2022-07-22 22:15:16,648 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 466 transitions. Word has length 145 [2022-07-22 22:15:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:16,648 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 466 transitions. [2022-07-22 22:15:16,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 71 states have (on average 2.9577464788732395) internal successors, (210), 68 states have internal predecessors, (210), 22 states have call successors, (47), 10 states have call predecessors, (47), 17 states have return successors, (41), 19 states have call predecessors, (41), 20 states have call successors, (41) [2022-07-22 22:15:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 466 transitions. [2022-07-22 22:15:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 22:15:16,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:16,650 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:16,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:16,863 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1790037273, now seen corresponding path program 1 times [2022-07-22 22:15:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:16,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964280690] [2022-07-22 22:15:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:15:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:15:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:15:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:15:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:15:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:15:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:15:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:15:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 22:15:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-22 22:15:17,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:17,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964280690] [2022-07-22 22:15:17,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964280690] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:17,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419798852] [2022-07-22 22:15:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:17,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:17,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:17,608 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:17,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:15:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:18,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-22 22:15:18,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:18,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:15:22,443 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:22,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-07-22 22:15:22,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:26,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:15:26,842 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:26,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-22 22:15:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 37 proven. 77 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 22:15:27,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:28,095 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2079 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| v_ArrVal_2079) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 0))) (forall ((v_ArrVal_2078 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.offset| v_ArrVal_2078)) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 18446744073709551616) 0)))) is different from false [2022-07-22 22:15:28,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419798852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:28,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:15:28,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 45 [2022-07-22 22:15:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242732433] [2022-07-22 22:15:28,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:28,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 22:15:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 22:15:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2670, Unknown=3, NotChecked=104, Total=2970 [2022-07-22 22:15:28,104 INFO L87 Difference]: Start difference. First operand 400 states and 466 transitions. Second operand has 45 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 20 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 18 states have call predecessors, (34), 20 states have call successors, (34) [2022-07-22 22:15:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:35,517 INFO L93 Difference]: Finished difference Result 566 states and 712 transitions. [2022-07-22 22:15:35,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 22:15:35,517 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 20 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 18 states have call predecessors, (34), 20 states have call successors, (34) Word has length 150 [2022-07-22 22:15:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:35,519 INFO L225 Difference]: With dead ends: 566 [2022-07-22 22:15:35,520 INFO L226 Difference]: Without dead ends: 476 [2022-07-22 22:15:35,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 216 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=552, Invalid=6587, Unknown=5, NotChecked=166, Total=7310 [2022-07-22 22:15:35,522 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 355 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 4326 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 957 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:35,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1527 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4326 Invalid, 0 Unknown, 957 Unchecked, 2.3s Time] [2022-07-22 22:15:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-22 22:15:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 398. [2022-07-22 22:15:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 296 states have (on average 1.0912162162162162) internal successors, (323), 299 states have internal predecessors, (323), 62 states have call successors, (62), 34 states have call predecessors, (62), 39 states have return successors, (84), 64 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-22 22:15:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 469 transitions. [2022-07-22 22:15:35,547 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 469 transitions. Word has length 150 [2022-07-22 22:15:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:35,548 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 469 transitions. [2022-07-22 22:15:35,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 20 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 18 states have call predecessors, (34), 20 states have call successors, (34) [2022-07-22 22:15:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 469 transitions. [2022-07-22 22:15:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 22:15:35,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:35,549 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:35,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:35,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:35,766 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash 402200858, now seen corresponding path program 1 times [2022-07-22 22:15:35,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:35,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562370830] [2022-07-22 22:15:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:15:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:15:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:15:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:15:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:15:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:15:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:15:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:15:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:15:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 22:15:36,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:36,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562370830] [2022-07-22 22:15:36,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562370830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:36,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030591685] [2022-07-22 22:15:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:36,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:36,642 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:36,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:15:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:37,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 90 conjunts are in the unsatisfiable core [2022-07-22 22:15:37,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:37,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:15:41,453 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:41,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-22 22:15:41,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-22 22:15:41,499 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:15:41,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-22 22:15:41,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:41,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:45,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:15:45,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 52 proven. 91 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 22:15:46,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:47,658 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2209 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.offset| v_ArrVal_2209)) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 18446744073709551616) 0))) (forall ((v_ArrVal_2210 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| v_ArrVal_2210) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 0)))) is different from false [2022-07-22 22:15:47,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030591685] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:47,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:15:47,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 46 [2022-07-22 22:15:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245791635] [2022-07-22 22:15:47,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 22:15:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 22:15:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2784, Unknown=3, NotChecked=106, Total=3080 [2022-07-22 22:15:47,666 INFO L87 Difference]: Start difference. First operand 398 states and 469 transitions. Second operand has 46 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 23 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (34), 17 states have call predecessors, (34), 23 states have call successors, (34) [2022-07-22 22:15:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:56,489 INFO L93 Difference]: Finished difference Result 548 states and 667 transitions. [2022-07-22 22:15:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-22 22:15:56,490 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 23 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (34), 17 states have call predecessors, (34), 23 states have call successors, (34) Word has length 151 [2022-07-22 22:15:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:56,491 INFO L225 Difference]: With dead ends: 548 [2022-07-22 22:15:56,492 INFO L226 Difference]: Without dead ends: 450 [2022-07-22 22:15:56,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 114 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=1088, Invalid=12017, Unknown=9, NotChecked=226, Total=13340 [2022-07-22 22:15:56,494 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 361 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 4379 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 5794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 4379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1169 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:56,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1557 Invalid, 5794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 4379 Invalid, 0 Unknown, 1169 Unchecked, 2.1s Time] [2022-07-22 22:15:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-22 22:15:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 384. [2022-07-22 22:15:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 285 states have (on average 1.087719298245614) internal successors, (310), 289 states have internal predecessors, (310), 59 states have call successors, (59), 33 states have call predecessors, (59), 39 states have return successors, (81), 61 states have call predecessors, (81), 58 states have call successors, (81) [2022-07-22 22:15:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 450 transitions. [2022-07-22 22:15:56,517 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 450 transitions. Word has length 151 [2022-07-22 22:15:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:56,518 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 450 transitions. [2022-07-22 22:15:56,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 23 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (34), 17 states have call predecessors, (34), 23 states have call successors, (34) [2022-07-22 22:15:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 450 transitions. [2022-07-22 22:15:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 22:15:56,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:56,520 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:56,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:56,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:56,736 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1092836136, now seen corresponding path program 1 times [2022-07-22 22:15:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248209160] [2022-07-22 22:15:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:15:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:15:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:15:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:15:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:15:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:15:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:15:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:15:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 22:15:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:15:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-22 22:15:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:56,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248209160] [2022-07-22 22:15:56,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248209160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:56,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:56,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:15:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929324604] [2022-07-22 22:15:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:15:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:15:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:15:56,974 INFO L87 Difference]: Start difference. First operand 384 states and 450 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 22:15:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:57,363 INFO L93 Difference]: Finished difference Result 406 states and 477 transitions. [2022-07-22 22:15:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:15:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2022-07-22 22:15:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:57,366 INFO L225 Difference]: With dead ends: 406 [2022-07-22 22:15:57,366 INFO L226 Difference]: Without dead ends: 404 [2022-07-22 22:15:57,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:15:57,366 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 152 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:57,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 518 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:15:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-22 22:15:57,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 391. [2022-07-22 22:15:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 288 states have (on average 1.0868055555555556) internal successors, (313), 292 states have internal predecessors, (313), 62 states have call successors, (62), 34 states have call predecessors, (62), 40 states have return successors, (84), 64 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-22 22:15:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 459 transitions. [2022-07-22 22:15:57,433 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 459 transitions. Word has length 154 [2022-07-22 22:15:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:57,433 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 459 transitions. [2022-07-22 22:15:57,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 22:15:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 459 transitions. [2022-07-22 22:15:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 22:15:57,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:57,434 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 22:15:57,435 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:57,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1498803250, now seen corresponding path program 1 times [2022-07-22 22:15:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:57,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541960246] [2022-07-22 22:15:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:15:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:15:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:15:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:15:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:15:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:15:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:15:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:15:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:15:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 22:15:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 22:15:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 22:15:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-22 22:15:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541960246] [2022-07-22 22:15:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541960246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:57,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:57,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:15:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688309140] [2022-07-22 22:15:57,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:15:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:15:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:15:57,723 INFO L87 Difference]: Start difference. First operand 391 states and 459 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-22 22:15:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:58,264 INFO L93 Difference]: Finished difference Result 509 states and 615 transitions. [2022-07-22 22:15:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:15:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 171 [2022-07-22 22:15:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:58,267 INFO L225 Difference]: With dead ends: 509 [2022-07-22 22:15:58,267 INFO L226 Difference]: Without dead ends: 393 [2022-07-22 22:15:58,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:15:58,272 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 161 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:58,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 575 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:15:58,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-22 22:15:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 392. [2022-07-22 22:15:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 289 states have (on average 1.0865051903114187) internal successors, (314), 293 states have internal predecessors, (314), 62 states have call successors, (62), 34 states have call predecessors, (62), 40 states have return successors, (84), 64 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-22 22:15:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 460 transitions. [2022-07-22 22:15:58,295 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 460 transitions. Word has length 171 [2022-07-22 22:15:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:58,295 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 460 transitions. [2022-07-22 22:15:58,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-22 22:15:58,296 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 460 transitions. [2022-07-22 22:15:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 22:15:58,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:58,297 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 22:15:58,297 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash -481654668, now seen corresponding path program 1 times [2022-07-22 22:15:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:58,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113404261] [2022-07-22 22:15:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:58,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:15:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:15:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:15:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:15:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:15:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:15:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:15:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:15:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:15:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:15:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 22:15:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 22:15:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 22:15:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-22 22:15:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113404261] [2022-07-22 22:15:58,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113404261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880995936] [2022-07-22 22:15:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:58,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:58,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:58,680 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:58,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:15:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:59,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-22 22:15:59,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:59,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:15:59,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:15:59,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:59,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-22 22:15:59,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:15:59,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:16:00,017 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-22 22:16:00,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-07-22 22:16:00,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-07-22 22:16:00,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:16:13,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-07-22 22:16:13,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:16:13,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:16:13,687 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:16:13,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-22 22:16:15,732 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base_BEFORE_CALL_40| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base_BEFORE_CALL_40|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base_BEFORE_CALL_40|)) is different from true [2022-07-22 22:16:53,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:16:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:16:53,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:16:56,080 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_75 Int)) (and (< (+ (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_75) 8) 1) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_75) (not (= (mod (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_75) 16) 18446744073709551616) 0)))) is different from true [2022-07-22 22:17:30,487 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2523 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_2523))) is different from true [2022-07-22 22:17:30,496 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2523 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_2523) |c_#memory_int|)) is different from true [2022-07-22 22:17:30,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:17:30,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2022-07-22 22:17:30,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:17:30,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-22 22:17:30,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:17:30,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:17:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 24 proven. 152 refuted. 1 times theorem prover too weak. 48 trivial. 52 not checked. [2022-07-22 22:17:35,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:17:35,638 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2531 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1174.base| v_ArrVal_2531) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616) 0))) is different from false [2022-07-22 22:17:35,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880995936] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:17:35,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:17:35,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 43] total 54 [2022-07-22 22:17:35,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823184457] [2022-07-22 22:17:35,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:17:35,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-22 22:17:35,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:17:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-22 22:17:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2649, Unknown=17, NotChecked=540, Total=3422 [2022-07-22 22:17:35,655 INFO L87 Difference]: Start difference. First operand 392 states and 460 transitions. Second operand has 54 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 43 states have internal predecessors, (172), 20 states have call successors, (41), 16 states have call predecessors, (41), 13 states have return successors, (38), 16 states have call predecessors, (38), 19 states have call successors, (38)