./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_cursor_read_be64_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 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:17:14,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:17:14,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:17:14,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:17:14,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:17:14,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:17:14,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:17:14,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:17:14,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:17:14,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:17:14,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:17:14,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:17:14,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:17:14,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:17:14,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:17:14,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:17:14,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:17:14,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:17:14,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:17:14,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:17:14,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:17:14,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:17:14,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:17:14,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:17:14,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:17:14,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:17:14,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:17:14,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:17:14,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:17:14,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:17:14,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:17:14,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:17:14,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:17:14,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:17:14,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:17:14,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:17:14,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:17:14,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:17:14,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:17:14,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:17:14,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:17:14,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:17:14,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:17:14,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:17:14,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:17:14,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:17:14,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:17:14,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:17:14,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:17:14,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:17:14,226 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:17:14,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:17:14,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:17:14,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:17:14,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:17:14,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:17:14,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:17:14,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:17:14,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:17:14,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:17:14,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:17:14,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:17:14,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:17:14,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:17:14,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:17:14,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:17:14,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:17:14,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:17:14,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:17:14,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:17:14,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:17:14,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:17:14,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a [2021-12-28 03:17:14,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:17:14,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:17:14,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:17:14,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:17:14,528 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:17:14,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-12-28 03:17:14,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4540f20e2/04a2bbd781b74a9b818f96954683608e/FLAG15fe9a5bf [2021-12-28 03:17:15,193 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:17:15,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-12-28 03:17:15,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4540f20e2/04a2bbd781b74a9b818f96954683608e/FLAG15fe9a5bf [2021-12-28 03:17:15,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4540f20e2/04a2bbd781b74a9b818f96954683608e [2021-12-28 03:17:15,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:17:15,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:17:15,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:17:15,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:17:15,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:17:15,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348205ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15, skipping insertion in model container [2021-12-28 03:17:15,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:17:15,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:17:15,846 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_cursor_read_be64_harness.i[4499,4512] [2021-12-28 03:17:15,851 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_cursor_read_be64_harness.i[4559,4572] [2021-12-28 03:17:16,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,394 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,394 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:17:16,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:17:16,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:17:16,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:17:16,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:17:16,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:17:16,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:17:16,637 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:17:16,638 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:17:16,639 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:17:16,735 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:17:16,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,789 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:17:16,889 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:17:16,904 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_cursor_read_be64_harness.i[4499,4512] [2021-12-28 03:17:16,905 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_cursor_read_be64_harness.i[4559,4572] [2021-12-28 03:17:16,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:16,959 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:17:16,960 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:17:16,961 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:17:16,961 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:17:16,962 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:17:16,962 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:17:16,962 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:17:16,962 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:17:16,963 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:17:16,963 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:17:16,975 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:17:17,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:17,007 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:17,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:17:17,163 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:17:17,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17 WrapperNode [2021-12-28 03:17:17,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:17:17,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:17:17,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:17:17,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:17:17,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,317 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 975 [2021-12-28 03:17:17,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:17:17,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:17:17,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:17:17,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:17:17,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:17:17,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:17:17,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:17:17,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:17:17,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (1/1) ... [2021-12-28 03:17:17,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:17:17,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:17,428 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) [2021-12-28 03:17:17,446 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 [2021-12-28 03:17:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2021-12-28 03:17:17,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2021-12-28 03:17:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-12-28 03:17:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2021-12-28 03:17:17,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2021-12-28 03:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-28 03:17:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-28 03:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:17:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:17:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:17:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-28 03:17:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:17:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:17:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh64 [2021-12-28 03:17:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh64 [2021-12-28 03:17:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:17:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:17:17,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:17:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:17:17,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:17:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:17:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:17:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:17:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:17:17,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:17:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:17:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:17:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:17:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:17:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:17:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:17:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:17:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:17:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:17:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:17:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:17:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2021-12-28 03:17:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-28 03:17:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:17:17,678 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:17:17,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:17:18,545 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:17:18,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:17:18,552 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:17:18,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:17:18 BoogieIcfgContainer [2021-12-28 03:17:18,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:17:18,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:17:18,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:17:18,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:17:18,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:17:15" (1/3) ... [2021-12-28 03:17:18,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38be1c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:17:18, skipping insertion in model container [2021-12-28 03:17:18,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:17" (2/3) ... [2021-12-28 03:17:18,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38be1c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:17:18, skipping insertion in model container [2021-12-28 03:17:18,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:17:18" (3/3) ... [2021-12-28 03:17:18,560 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness.i [2021-12-28 03:17:18,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:17:18,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:17:18,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:17:18,604 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:17:18,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:17:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 105 states have internal predecessors, (127), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-28 03:17:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 03:17:18,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:18,629 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:18,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2071909208, now seen corresponding path program 1 times [2021-12-28 03:17:18,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:18,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013405606] [2021-12-28 03:17:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:18,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:17:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:17:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:17:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:17:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:17:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:17:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:17:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 03:17:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 03:17:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:17:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-28 03:17:19,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:19,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013405606] [2021-12-28 03:17:19,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013405606] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:19,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317049358] [2021-12-28 03:17:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:19,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:19,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:19,415 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) [2021-12-28 03:17:19,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:17:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:17:19,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-28 03:17:20,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:20,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317049358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:20,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:20,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-28 03:17:20,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233666722] [2021-12-28 03:17:20,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:20,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:17:20,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:17:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:17:20,285 INFO L87 Difference]: Start difference. First operand has 169 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 105 states have internal predecessors, (127), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:20,544 INFO L93 Difference]: Finished difference Result 334 states and 486 transitions. [2021-12-28 03:17:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:17:20,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 135 [2021-12-28 03:17:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:20,558 INFO L225 Difference]: With dead ends: 334 [2021-12-28 03:17:20,558 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:17:20,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:17:20,571 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 247 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:20,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 473 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:17:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:17:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2021-12-28 03:17:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 229 transitions. [2021-12-28 03:17:20,651 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 229 transitions. Word has length 135 [2021-12-28 03:17:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:20,651 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 229 transitions. [2021-12-28 03:17:20,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 229 transitions. [2021-12-28 03:17:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 03:17:20,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:20,654 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:20,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:20,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 03:17:20,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:20,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2052663395, now seen corresponding path program 1 times [2021-12-28 03:17:20,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:20,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54915670] [2021-12-28 03:17:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:20,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:17:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:17:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 03:17:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:17:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:17:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 03:17:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-28 03:17:21,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:21,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54915670] [2021-12-28 03:17:21,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54915670] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:21,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751611167] [2021-12-28 03:17:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:21,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:21,396 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) [2021-12-28 03:17:21,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:17:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:17:21,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:17:22,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:22,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751611167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:22,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:22,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-28 03:17:22,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832277665] [2021-12-28 03:17:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:22,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:17:22,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:17:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:17:22,086 INFO L87 Difference]: Start difference. First operand 166 states and 229 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-28 03:17:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:22,403 INFO L93 Difference]: Finished difference Result 288 states and 398 transitions. [2021-12-28 03:17:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:17:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 137 [2021-12-28 03:17:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:22,405 INFO L225 Difference]: With dead ends: 288 [2021-12-28 03:17:22,405 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:17:22,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:17:22,407 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 260 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:22,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 756 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:17:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:17:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:17:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-28 03:17:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 227 transitions. [2021-12-28 03:17:22,418 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 227 transitions. Word has length 137 [2021-12-28 03:17:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:22,418 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 227 transitions. [2021-12-28 03:17:22,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-28 03:17:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 227 transitions. [2021-12-28 03:17:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 03:17:22,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:22,436 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:22,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:22,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 03:17:22,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:22,656 INFO L85 PathProgramCache]: Analyzing trace with hash 702875934, now seen corresponding path program 2 times [2021-12-28 03:17:22,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:22,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754295763] [2021-12-28 03:17:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:22,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:17:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:17:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:17:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:17:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 03:17:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-28 03:17:23,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754295763] [2021-12-28 03:17:23,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754295763] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122986898] [2021-12-28 03:17:23,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:23,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:23,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:23,137 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) [2021-12-28 03:17:23,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:17:23,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:23,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:23,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 03:17:23,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 03:17:23,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:23,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122986898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:23,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:23,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 13 [2021-12-28 03:17:23,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798063941] [2021-12-28 03:17:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:23,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:17:23,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:17:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:17:23,938 INFO L87 Difference]: Start difference. First operand 166 states and 227 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-28 03:17:24,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:24,084 INFO L93 Difference]: Finished difference Result 282 states and 385 transitions. [2021-12-28 03:17:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:17:24,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 139 [2021-12-28 03:17:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:24,087 INFO L225 Difference]: With dead ends: 282 [2021-12-28 03:17:24,087 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:17:24,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:17:24,089 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 105 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:24,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1046 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:17:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:17:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-28 03:17:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 224 transitions. [2021-12-28 03:17:24,105 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 224 transitions. Word has length 139 [2021-12-28 03:17:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:24,106 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 224 transitions. [2021-12-28 03:17:24,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-28 03:17:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 224 transitions. [2021-12-28 03:17:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 03:17:24,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:24,108 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:24,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:17:24,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:24,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1036609347, now seen corresponding path program 3 times [2021-12-28 03:17:24,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:24,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031974414] [2021-12-28 03:17:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:24,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:17:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:17:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 03:17:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-28 03:17:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031974414] [2021-12-28 03:17:24,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031974414] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813033135] [2021-12-28 03:17:24,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:17:24,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:24,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:24,712 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) [2021-12-28 03:17:24,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:17:25,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-28 03:17:25,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:25,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 03:17:25,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-28 03:17:25,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:25,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813033135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:25,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:25,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-28 03:17:25,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228309272] [2021-12-28 03:17:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:25,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:17:25,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:17:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:17:25,620 INFO L87 Difference]: Start difference. First operand 166 states and 224 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:25,707 INFO L93 Difference]: Finished difference Result 277 states and 371 transitions. [2021-12-28 03:17:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:17:25,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 141 [2021-12-28 03:17:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:25,709 INFO L225 Difference]: With dead ends: 277 [2021-12-28 03:17:25,709 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:17:25,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:17:25,711 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:25,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1196 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:17:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:17:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2021-12-28 03:17:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 223 transitions. [2021-12-28 03:17:25,720 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 223 transitions. Word has length 141 [2021-12-28 03:17:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:25,720 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 223 transitions. [2021-12-28 03:17:25,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 223 transitions. [2021-12-28 03:17:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-28 03:17:25,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:25,722 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:25,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:25,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:25,935 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash 197461288, now seen corresponding path program 4 times [2021-12-28 03:17:25,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:25,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674646792] [2021-12-28 03:17:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:25,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:17:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:17:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-28 03:17:26,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674646792] [2021-12-28 03:17:26,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674646792] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362699816] [2021-12-28 03:17:26,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:17:26,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:26,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:26,308 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) [2021-12-28 03:17:26,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:17:26,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:17:26,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:17:26,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:17:27,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:27,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362699816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:27,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:27,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2021-12-28 03:17:27,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779851341] [2021-12-28 03:17:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:17:27,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:17:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:17:27,025 INFO L87 Difference]: Start difference. First operand 166 states and 223 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 6 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-28 03:17:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:27,387 INFO L93 Difference]: Finished difference Result 271 states and 359 transitions. [2021-12-28 03:17:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:17:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 6 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 143 [2021-12-28 03:17:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:27,389 INFO L225 Difference]: With dead ends: 271 [2021-12-28 03:17:27,389 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:17:27,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2021-12-28 03:17:27,390 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 292 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:27,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 984 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:17:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:17:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:17:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2021-12-28 03:17:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 222 transitions. [2021-12-28 03:17:27,399 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 222 transitions. Word has length 143 [2021-12-28 03:17:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:27,399 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 222 transitions. [2021-12-28 03:17:27,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 6 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-28 03:17:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 222 transitions. [2021-12-28 03:17:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 03:17:27,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:27,400 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:27,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:27,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:27,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:27,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1175651149, now seen corresponding path program 1 times [2021-12-28 03:17:27,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:27,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932757300] [2021-12-28 03:17:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:27,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:17:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:17:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-28 03:17:27,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932757300] [2021-12-28 03:17:27,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932757300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:27,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:27,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:17:27,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554615019] [2021-12-28 03:17:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:27,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:17:27,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:17:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:27,986 INFO L87 Difference]: Start difference. First operand 166 states and 222 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-28 03:17:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:29,057 INFO L93 Difference]: Finished difference Result 185 states and 253 transitions. [2021-12-28 03:17:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:17:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 145 [2021-12-28 03:17:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:29,060 INFO L225 Difference]: With dead ends: 185 [2021-12-28 03:17:29,060 INFO L226 Difference]: Without dead ends: 183 [2021-12-28 03:17:29,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:17:29,061 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 138 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:29,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 853 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:17:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-28 03:17:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 175. [2021-12-28 03:17:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 110 states have internal predecessors, (128), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2021-12-28 03:17:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 240 transitions. [2021-12-28 03:17:29,073 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 240 transitions. Word has length 145 [2021-12-28 03:17:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:29,074 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 240 transitions. [2021-12-28 03:17:29,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-28 03:17:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 240 transitions. [2021-12-28 03:17:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 03:17:29,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:29,076 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:29,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:17:29,077 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:29,077 INFO L85 PathProgramCache]: Analyzing trace with hash -174149227, now seen corresponding path program 1 times [2021-12-28 03:17:29,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:29,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126346038] [2021-12-28 03:17:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:29,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:17:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:17:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-28 03:17:29,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126346038] [2021-12-28 03:17:29,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126346038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:29,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:29,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:17:29,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385767607] [2021-12-28 03:17:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:29,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:17:29,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:17:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:17:29,427 INFO L87 Difference]: Start difference. First operand 175 states and 240 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:30,074 INFO L93 Difference]: Finished difference Result 320 states and 441 transitions. [2021-12-28 03:17:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:17:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 149 [2021-12-28 03:17:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:30,076 INFO L225 Difference]: With dead ends: 320 [2021-12-28 03:17:30,076 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:17:30,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:30,078 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 123 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:30,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 463 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:17:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:17:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2021-12-28 03:17:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 110 states have (on average 1.209090909090909) internal successors, (133), 114 states have internal predecessors, (133), 51 states have call successors, (51), 14 states have call predecessors, (51), 17 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2021-12-28 03:17:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2021-12-28 03:17:30,088 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 149 [2021-12-28 03:17:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:30,088 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2021-12-28 03:17:30,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2021-12-28 03:17:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-28 03:17:30,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:30,090 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:30,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:17:30,090 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1270175042, now seen corresponding path program 1 times [2021-12-28 03:17:30,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:30,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067918381] [2021-12-28 03:17:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:30,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:17:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:17:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:17:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:17:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:17:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:17:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:17:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:17:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 03:17:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-28 03:17:30,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:30,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067918381] [2021-12-28 03:17:30,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067918381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:30,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655110540] [2021-12-28 03:17:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:30,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:30,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:30,467 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) [2021-12-28 03:17:30,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:17:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:17:30,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-28 03:17:31,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-28 03:17:31,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655110540] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:31,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:31,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2021-12-28 03:17:31,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266929789] [2021-12-28 03:17:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:31,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:17:31,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:17:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:31,354 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:31,439 INFO L93 Difference]: Finished difference Result 325 states and 452 transitions. [2021-12-28 03:17:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:17:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 150 [2021-12-28 03:17:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:31,442 INFO L225 Difference]: With dead ends: 325 [2021-12-28 03:17:31,442 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:17:31,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:31,445 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 5 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:31,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 428 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:17:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-28 03:17:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 116 states have internal predecessors, (136), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2021-12-28 03:17:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 249 transitions. [2021-12-28 03:17:31,477 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 249 transitions. Word has length 150 [2021-12-28 03:17:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:31,477 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 249 transitions. [2021-12-28 03:17:31,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 249 transitions. [2021-12-28 03:17:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 03:17:31,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:31,480 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:31,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:31,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:31,695 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1521165747, now seen corresponding path program 1 times [2021-12-28 03:17:31,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:31,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749542196] [2021-12-28 03:17:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:31,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:17:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:17:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 03:17:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 03:17:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:17:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:17:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 03:17:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:17:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-28 03:17:32,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:32,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749542196] [2021-12-28 03:17:32,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749542196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:32,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919861127] [2021-12-28 03:17:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:32,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:32,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:32,052 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) [2021-12-28 03:17:32,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:17:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 125 conjunts are in the unsatisfiable core [2021-12-28 03:17:32,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:32,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:17:32,769 INFO L387 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 [2021-12-28 03:17:33,367 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-28 03:17:33,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-28 03:17:33,441 INFO L353 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-28 03:17:33,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2021-12-28 03:17:33,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 5 [2021-12-28 03:17:33,754 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-28 03:17:33,754 INFO L387 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 [2021-12-28 03:17:33,760 INFO L387 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 5 [2021-12-28 03:17:33,878 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-28 03:17:33,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 10 [2021-12-28 03:17:34,035 INFO L353 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-12-28 03:17:34,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 27 treesize of output 45 [2021-12-28 03:17:34,079 INFO L353 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-28 03:17:34,080 INFO L387 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 25 treesize of output 28 [2021-12-28 03:17:35,764 INFO L353 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-28 03:17:35,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-28 03:17:36,353 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-28 03:17:36,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-28 03:17:36,396 INFO L387 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 16 treesize of output 18 [2021-12-28 03:17:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-28 03:17:36,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:36,876 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1162 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1162) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0)) is different from false [2021-12-28 03:17:36,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919861127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:36,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:36,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 34] total 39 [2021-12-28 03:17:36,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378698117] [2021-12-28 03:17:36,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:36,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-28 03:17:36,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:36,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-28 03:17:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1681, Unknown=29, NotChecked=84, Total=1980 [2021-12-28 03:17:36,946 INFO L87 Difference]: Start difference. First operand 182 states and 249 transitions. Second operand has 39 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 34 states have internal predecessors, (132), 13 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (42), 11 states have call predecessors, (42), 13 states have call successors, (42) [2021-12-28 03:17:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:37,899 INFO L93 Difference]: Finished difference Result 382 states and 521 transitions. [2021-12-28 03:17:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 03:17:37,899 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 34 states have internal predecessors, (132), 13 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (42), 11 states have call predecessors, (42), 13 states have call successors, (42) Word has length 151 [2021-12-28 03:17:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:37,904 INFO L225 Difference]: With dead ends: 382 [2021-12-28 03:17:37,904 INFO L226 Difference]: Without dead ends: 235 [2021-12-28 03:17:37,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 153 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=256, Invalid=2579, Unknown=31, NotChecked=104, Total=2970 [2021-12-28 03:17:37,907 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 162 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1922 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:37,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1865 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 732 Invalid, 0 Unknown, 1922 Unchecked, 0.6s Time] [2021-12-28 03:17:37,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-28 03:17:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 220. [2021-12-28 03:17:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 58 states have call successors, (58), 19 states have call predecessors, (58), 21 states have return successors, (71), 57 states have call predecessors, (71), 57 states have call successors, (71) [2021-12-28 03:17:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 296 transitions. [2021-12-28 03:17:37,922 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 296 transitions. Word has length 151 [2021-12-28 03:17:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:37,923 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 296 transitions. [2021-12-28 03:17:37,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 34 states have internal predecessors, (132), 13 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (42), 11 states have call predecessors, (42), 13 states have call successors, (42) [2021-12-28 03:17:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 296 transitions. [2021-12-28 03:17:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-28 03:17:37,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:37,924 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:37,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-28 03:17:38,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:38,148 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash 507345052, now seen corresponding path program 2 times [2021-12-28 03:17:38,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:38,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641435001] [2021-12-28 03:17:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:38,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:17:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:17:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 03:17:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:17:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:17:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:17:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 03:17:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:17:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-28 03:17:38,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:38,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641435001] [2021-12-28 03:17:38,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641435001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:38,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589005667] [2021-12-28 03:17:38,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:38,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:38,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:38,544 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) [2021-12-28 03:17:38,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:17:39,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:39,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:39,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-28 03:17:39,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:39,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:17:39,680 INFO L353 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-12-28 03:17:39,680 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 26 [2021-12-28 03:17:39,731 INFO L353 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-28 03:17:39,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2021-12-28 03:17:40,050 INFO L353 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-28 03:17:40,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-28 03:17:41,237 INFO L353 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-12-28 03:17:41,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 27 treesize of output 45 [2021-12-28 03:17:41,804 INFO L353 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2021-12-28 03:17:41,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 25 [2021-12-28 03:17:41,838 INFO L387 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 16 treesize of output 18 [2021-12-28 03:17:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 142 proven. 34 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-28 03:17:42,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:42,365 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1639 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1639) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0)) is different from false [2021-12-28 03:17:42,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589005667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:42,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:42,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26] total 32 [2021-12-28 03:17:42,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087575361] [2021-12-28 03:17:42,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:42,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 03:17:42,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 03:17:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1195, Unknown=1, NotChecked=70, Total=1406 [2021-12-28 03:17:42,422 INFO L87 Difference]: Start difference. First operand 220 states and 296 transitions. Second operand has 32 states, 29 states have (on average 4.896551724137931) internal successors, (142), 28 states have internal predecessors, (142), 11 states have call successors, (45), 10 states have call predecessors, (45), 9 states have return successors, (42), 9 states have call predecessors, (42), 11 states have call successors, (42) [2021-12-28 03:17:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:44,399 INFO L93 Difference]: Finished difference Result 529 states and 724 transitions. [2021-12-28 03:17:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-28 03:17:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.896551724137931) internal successors, (142), 28 states have internal predecessors, (142), 11 states have call successors, (45), 10 states have call predecessors, (45), 9 states have return successors, (42), 9 states have call predecessors, (42), 11 states have call successors, (42) Word has length 152 [2021-12-28 03:17:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:44,401 INFO L225 Difference]: With dead ends: 529 [2021-12-28 03:17:44,401 INFO L226 Difference]: Without dead ends: 368 [2021-12-28 03:17:44,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 163 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=366, Invalid=3543, Unknown=1, NotChecked=122, Total=4032 [2021-12-28 03:17:44,404 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 206 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 4227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3238 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:44,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 3594 Invalid, 4227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 828 Invalid, 0 Unknown, 3238 Unchecked, 1.1s Time] [2021-12-28 03:17:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-12-28 03:17:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 324. [2021-12-28 03:17:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 214 states have (on average 1.2242990654205608) internal successors, (262), 220 states have internal predecessors, (262), 79 states have call successors, (79), 25 states have call predecessors, (79), 30 states have return successors, (103), 78 states have call predecessors, (103), 78 states have call successors, (103) [2021-12-28 03:17:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 444 transitions. [2021-12-28 03:17:44,424 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 444 transitions. Word has length 152 [2021-12-28 03:17:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:44,424 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 444 transitions. [2021-12-28 03:17:44,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.896551724137931) internal successors, (142), 28 states have internal predecessors, (142), 11 states have call successors, (45), 10 states have call predecessors, (45), 9 states have return successors, (42), 9 states have call predecessors, (42), 11 states have call successors, (42) [2021-12-28 03:17:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 444 transitions. [2021-12-28 03:17:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 03:17:44,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:44,427 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:44,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:44,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:17:44,644 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1958863387, now seen corresponding path program 3 times [2021-12-28 03:17:44,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:44,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624047070] [2021-12-28 03:17:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:44,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:17:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:17:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:17:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:17:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:17:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:17:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-28 03:17:45,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624047070] [2021-12-28 03:17:45,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624047070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840721712] [2021-12-28 03:17:45,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:17:45,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:45,274 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) [2021-12-28 03:17:45,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:17:46,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-28 03:17:46,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:46,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:17:46,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-28 03:17:46,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:46,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840721712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:46,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:46,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2021-12-28 03:17:46,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95206675] [2021-12-28 03:17:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:46,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:46,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:17:46,436 INFO L87 Difference]: Start difference. First operand 324 states and 444 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:46,589 INFO L93 Difference]: Finished difference Result 480 states and 663 transitions. [2021-12-28 03:17:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:17:46,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 157 [2021-12-28 03:17:46,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:46,592 INFO L225 Difference]: With dead ends: 480 [2021-12-28 03:17:46,592 INFO L226 Difference]: Without dead ends: 344 [2021-12-28 03:17:46,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:17:46,594 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 12 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:46,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1671 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-28 03:17:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 334. [2021-12-28 03:17:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 222 states have (on average 1.2162162162162162) internal successors, (270), 230 states have internal predecessors, (270), 79 states have call successors, (79), 25 states have call predecessors, (79), 32 states have return successors, (116), 78 states have call predecessors, (116), 78 states have call successors, (116) [2021-12-28 03:17:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 465 transitions. [2021-12-28 03:17:46,631 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 465 transitions. Word has length 157 [2021-12-28 03:17:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:46,633 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 465 transitions. [2021-12-28 03:17:46,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 465 transitions. [2021-12-28 03:17:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 03:17:46,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:46,636 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:46,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:46,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:46,851 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash 621463049, now seen corresponding path program 1 times [2021-12-28 03:17:46,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:46,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292900528] [2021-12-28 03:17:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:46,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:17:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:17:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:17:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:17:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:17:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:17:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 03:17:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:17:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:17:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-28 03:17:47,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292900528] [2021-12-28 03:17:47,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292900528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:47,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:47,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:17:47,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193418313] [2021-12-28 03:17:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:47,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:47,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:47,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:17:47,239 INFO L87 Difference]: Start difference. First operand 334 states and 465 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-28 03:17:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:48,324 INFO L93 Difference]: Finished difference Result 545 states and 779 transitions. [2021-12-28 03:17:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:17:48,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 160 [2021-12-28 03:17:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:48,327 INFO L225 Difference]: With dead ends: 545 [2021-12-28 03:17:48,327 INFO L226 Difference]: Without dead ends: 387 [2021-12-28 03:17:48,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:17:48,328 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 289 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:48,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 554 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:17:48,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-28 03:17:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 345. [2021-12-28 03:17:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 228 states have (on average 1.206140350877193) internal successors, (275), 236 states have internal predecessors, (275), 84 states have call successors, (84), 25 states have call predecessors, (84), 32 states have return successors, (123), 83 states have call predecessors, (123), 83 states have call successors, (123) [2021-12-28 03:17:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 482 transitions. [2021-12-28 03:17:48,347 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 482 transitions. Word has length 160 [2021-12-28 03:17:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:48,347 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 482 transitions. [2021-12-28 03:17:48,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-28 03:17:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 482 transitions. [2021-12-28 03:17:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-28 03:17:48,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:48,349 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:48,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 03:17:48,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 580557344, now seen corresponding path program 1 times [2021-12-28 03:17:48,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842204534] [2021-12-28 03:17:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:48,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:17:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:17:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:17:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:17:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 03:17:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:17:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 03:17:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-28 03:17:48,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:48,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842204534] [2021-12-28 03:17:48,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842204534] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:48,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652050250] [2021-12-28 03:17:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:48,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:48,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:48,844 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) [2021-12-28 03:17:48,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:17:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 03:17:49,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-28 03:17:49,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:49,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652050250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:49,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:49,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 03:17:49,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947659830] [2021-12-28 03:17:49,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:49,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:17:49,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:17:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:17:49,685 INFO L87 Difference]: Start difference. First operand 345 states and 482 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:49,974 INFO L93 Difference]: Finished difference Result 645 states and 924 transitions. [2021-12-28 03:17:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:17:49,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2021-12-28 03:17:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:49,976 INFO L225 Difference]: With dead ends: 645 [2021-12-28 03:17:49,977 INFO L226 Difference]: Without dead ends: 349 [2021-12-28 03:17:49,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:17:49,978 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 17 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:49,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 762 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2021-12-28 03:17:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-28 03:17:49,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-12-28 03:17:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 228 states have (on average 1.1885964912280702) internal successors, (271), 236 states have internal predecessors, (271), 84 states have call successors, (84), 25 states have call predecessors, (84), 32 states have return successors, (123), 83 states have call predecessors, (123), 83 states have call successors, (123) [2021-12-28 03:17:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 478 transitions. [2021-12-28 03:17:49,998 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 478 transitions. Word has length 159 [2021-12-28 03:17:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:49,999 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 478 transitions. [2021-12-28 03:17:49,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 478 transitions. [2021-12-28 03:17:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-28 03:17:50,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:50,000 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:50,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:50,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:17:50,215 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1448028766, now seen corresponding path program 1 times [2021-12-28 03:17:50,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124804536] [2021-12-28 03:17:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:50,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:17:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:17:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:17:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:17:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 03:17:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:17:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 03:17:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-28 03:17:50,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:50,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124804536] [2021-12-28 03:17:50,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124804536] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:50,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036453482] [2021-12-28 03:17:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:50,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:50,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:50,732 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) [2021-12-28 03:17:50,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:17:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:51,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-28 03:17:51,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:51,594 INFO L387 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 17 treesize of output 9 [2021-12-28 03:17:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 03:17:51,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:52,269 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-28 03:17:52,269 INFO L387 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 21 treesize of output 20 [2021-12-28 03:17:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-28 03:17:52,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036453482] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:17:52,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:17:52,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 27 [2021-12-28 03:17:52,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852618025] [2021-12-28 03:17:52,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:52,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 03:17:52,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 03:17:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-12-28 03:17:52,310 INFO L87 Difference]: Start difference. First operand 345 states and 478 transitions. Second operand has 27 states, 24 states have (on average 5.75) internal successors, (138), 21 states have internal predecessors, (138), 8 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (48), 6 states have call predecessors, (48), 7 states have call successors, (48) [2021-12-28 03:17:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:56,922 INFO L93 Difference]: Finished difference Result 665 states and 924 transitions. [2021-12-28 03:17:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-28 03:17:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 5.75) internal successors, (138), 21 states have internal predecessors, (138), 8 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (48), 6 states have call predecessors, (48), 7 states have call successors, (48) Word has length 159 [2021-12-28 03:17:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:56,925 INFO L225 Difference]: With dead ends: 665 [2021-12-28 03:17:56,926 INFO L226 Difference]: Without dead ends: 359 [2021-12-28 03:17:56,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2021-12-28 03:17:56,929 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 213 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:56,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1734 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2967 Invalid, 0 Unknown, 209 Unchecked, 4.0s Time] [2021-12-28 03:17:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-28 03:17:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 347. [2021-12-28 03:17:56,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 230 states have (on average 1.1869565217391305) internal successors, (273), 238 states have internal predecessors, (273), 84 states have call successors, (84), 25 states have call predecessors, (84), 32 states have return successors, (121), 83 states have call predecessors, (121), 83 states have call successors, (121) [2021-12-28 03:17:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 478 transitions. [2021-12-28 03:17:56,952 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 478 transitions. Word has length 159 [2021-12-28 03:17:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:56,952 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 478 transitions. [2021-12-28 03:17:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 5.75) internal successors, (138), 21 states have internal predecessors, (138), 8 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (48), 6 states have call predecessors, (48), 7 states have call successors, (48) [2021-12-28 03:17:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 478 transitions. [2021-12-28 03:17:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-28 03:17:56,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:56,954 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:56,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:57,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:17:57,171 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1034406573, now seen corresponding path program 2 times [2021-12-28 03:17:57,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378898483] [2021-12-28 03:17:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:57,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:17:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:17:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:17:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:17:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:17:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:17:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:17:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 03:17:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 03:17:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:17:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:17:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:17:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:17:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 03:17:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-28 03:17:57,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:57,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378898483] [2021-12-28 03:17:57,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378898483] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:57,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459018886] [2021-12-28 03:17:57,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:57,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:57,657 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) [2021-12-28 03:17:57,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:17:58,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:58,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:58,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-28 03:17:58,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 174 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-28 03:17:59,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:59,779 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-28 03:17:59,780 INFO L387 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 20 treesize of output 19 [2021-12-28 03:17:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-28 03:17:59,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459018886] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:17:59,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:17:59,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 24 [2021-12-28 03:17:59,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761750664] [2021-12-28 03:17:59,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:59,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-28 03:17:59,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-28 03:17:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:17:59,896 INFO L87 Difference]: Start difference. First operand 347 states and 478 transitions. Second operand has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 21 states have internal predecessors, (127), 4 states have call successors, (41), 6 states have call predecessors, (41), 7 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-28 03:18:02,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:02,596 INFO L93 Difference]: Finished difference Result 672 states and 931 transitions. [2021-12-28 03:18:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-28 03:18:02,597 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 21 states have internal predecessors, (127), 4 states have call successors, (41), 6 states have call predecessors, (41), 7 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 164 [2021-12-28 03:18:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:02,599 INFO L225 Difference]: With dead ends: 672 [2021-12-28 03:18:02,599 INFO L226 Difference]: Without dead ends: 390 [2021-12-28 03:18:02,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=302, Invalid=1954, Unknown=0, NotChecked=0, Total=2256 [2021-12-28 03:18:02,601 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 248 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:02,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 847 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1328 Invalid, 0 Unknown, 307 Unchecked, 2.0s Time] [2021-12-28 03:18:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-28 03:18:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-12-28 03:18:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 248 states have (on average 1.1774193548387097) internal successors, (292), 254 states have internal predecessors, (292), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (130), 89 states have call predecessors, (130), 91 states have call successors, (130) [2021-12-28 03:18:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 514 transitions. [2021-12-28 03:18:02,621 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 514 transitions. Word has length 164 [2021-12-28 03:18:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:02,622 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 514 transitions. [2021-12-28 03:18:02,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 21 states have internal predecessors, (127), 4 states have call successors, (41), 6 states have call predecessors, (41), 7 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-28 03:18:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 514 transitions. [2021-12-28 03:18:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-28 03:18:02,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:02,624 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:02,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:02,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:18:02,830 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1712769614, now seen corresponding path program 3 times [2021-12-28 03:18:02,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:02,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426279012] [2021-12-28 03:18:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:02,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:18:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:18:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:18:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:18:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:18:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:18:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:18:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:18:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:18:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:18:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:18:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:18:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 03:18:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-28 03:18:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 03:18:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-28 03:18:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-28 03:18:03,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:03,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426279012] [2021-12-28 03:18:03,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426279012] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:03,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683796526] [2021-12-28 03:18:03,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:18:03,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:03,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:03,384 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) [2021-12-28 03:18:03,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:18:04,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-28 03:18:04,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:18:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-28 03:18:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:06,930 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_9| Int) (|v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_13| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_13|) (+ 8 |v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_9|)) 0))) (exists ((|v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_9| Int) (|v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_13| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_13|) (+ 8 |v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_9|)) 0)))) is different from true [2021-12-28 03:18:08,983 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_14| Int) (|v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_10| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_14|) (+ |v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_10| 8)) 0))) (exists ((|v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_14| Int) (|v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_10| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_read_~cur#1.base_BEFORE_CALL_14|) (+ |v_aws_byte_cursor_read_~cur#1.offset_BEFORE_CALL_10| 8)) 0)))) is different from true [2021-12-28 03:18:11,055 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base_BEFORE_CALL_12| Int) (|v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base_BEFORE_CALL_12|) (+ 8 |v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset_BEFORE_CALL_9|)) 0))) (exists ((|v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base_BEFORE_CALL_12| Int) (|v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base_BEFORE_CALL_12|) (+ 8 |v_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset_BEFORE_CALL_9|)) 0)))) is different from true