./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_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 d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:17:52,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:17:52,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:17:52,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:17:52,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:17:52,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:17:52,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:17:52,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:17:52,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:17:52,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:17:52,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:17:52,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:17:52,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:17:52,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:17:52,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:17:52,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:17:52,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:17:52,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:17:52,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:17:52,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:17:52,182 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:17:52,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:17:52,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:17:52,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:17:52,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:17:52,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:17:52,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:17:52,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:17:52,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:17:52,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:17:52,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:17:52,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:17:52,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:17:52,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:17:52,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:17:52,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:17:52,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:17:52,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:17:52,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:17:52,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:17:52,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:17:52,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:17:52,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:17:52,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:17:52,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:17:52,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:17:52,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:17:52,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:17:52,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:17:52,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:17:52,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:17:52,216 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:17:52,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:17:52,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:17:52,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:17:52,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:17:52,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:17:52,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:17:52,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:17:52,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:17:52,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:17:52,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:17:52,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:17:52,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:17:52,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:17:52,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:17:52,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:17:52,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:17:52,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:17:52,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:17:52,220 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:17:52,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:17:52,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:17:52,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2022-07-12 11:17:52,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:17:52,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:17:52,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:17:52,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:17:52,455 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:17:52,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2022-07-12 11:17:52,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e84db32/268490f1a3974c89926def52fb81e234/FLAGe6b591874 [2022-07-12 11:17:52,999 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:17:52,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2022-07-12 11:17:53,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e84db32/268490f1a3974c89926def52fb81e234/FLAGe6b591874 [2022-07-12 11:17:53,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e84db32/268490f1a3974c89926def52fb81e234 [2022-07-12 11:17:53,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:17:53,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:17:53,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:17:53,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:17:53,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:17:53,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:17:53" (1/1) ... [2022-07-12 11:17:53,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa445fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:53, skipping insertion in model container [2022-07-12 11:17:53,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:17:53" (1/1) ... [2022-07-12 11:17:53,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:17:53,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:17:53,481 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/memcpy_using_uint64_harness.i[4531,4544] [2022-07-12 11:17:53,486 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/memcpy_using_uint64_harness.i[4591,4604] [2022-07-12 11:17:53,900 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,901 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,901 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,902 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,903 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,911 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,913 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,918 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,928 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,929 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:53,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:17:54,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:17:54,042 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:17:54,044 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:17:54,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:17:54,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:17:54,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:17:54,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:17:54,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:17:54,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:17:54,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:17:54,099 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:17:54,109 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/memcpy_using_uint64_harness.i[4531,4544] [2022-07-12 11:17:54,112 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/memcpy_using_uint64_harness.i[4591,4604] [2022-07-12 11:17:54,145 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,145 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,146 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,146 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,147 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,154 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,155 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,155 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,156 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,157 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,157 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,158 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:17:54,216 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:17:54,217 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:17:54,217 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:17:54,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:17:54,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:17:54,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:17:54,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:17:54,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:17:54,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:17:54,221 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:17:54,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:17:54,358 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:17:54,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54 WrapperNode [2022-07-12 11:17:54,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:17:54,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:17:54,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:17:54,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:17:54,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,440 INFO L137 Inliner]: procedures = 593, calls = 627, calls flagged for inlining = 39, calls inlined = 6, statements flattened = 137 [2022-07-12 11:17:54,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:17:54,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:17:54,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:17:54,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:17:54,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:17:54,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:17:54,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:17:54,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:17:54,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (1/1) ... [2022-07-12 11:17:54,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:17:54,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:54,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 11:17:54,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 11:17:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:17:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:17:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:17:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:17:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:17:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:17:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:17:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:17:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:17:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:17:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:17:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:17:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:17:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:17:54,781 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:17:54,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:17:55,015 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:17:55,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:17:55,019 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 11:17:55,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:17:55 BoogieIcfgContainer [2022-07-12 11:17:55,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:17:55,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:17:55,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:17:55,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:17:55,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:17:53" (1/3) ... [2022-07-12 11:17:55,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458b75e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:17:55, skipping insertion in model container [2022-07-12 11:17:55,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:17:54" (2/3) ... [2022-07-12 11:17:55,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458b75e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:17:55, skipping insertion in model container [2022-07-12 11:17:55,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:17:55" (3/3) ... [2022-07-12 11:17:55,039 INFO L111 eAbstractionObserver]: Analyzing ICFG memcpy_using_uint64_harness.i [2022-07-12 11:17:55,051 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:17:55,051 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:17:55,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:17:55,089 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32103144, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a0c550f [2022-07-12 11:17:55,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:17:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 11:17:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 11:17:55,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:55,100 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:55,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1463681059, now seen corresponding path program 1 times [2022-07-12 11:17:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:55,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767132225] [2022-07-12 11:17:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:17:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 11:17:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:17:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:17:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:17:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:17:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:17:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:17:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767132225] [2022-07-12 11:17:55,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767132225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:17:55,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:17:55,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 11:17:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213880074] [2022-07-12 11:17:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:17:55,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 11:17:55,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 11:17:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 11:17:55,508 INFO L87 Difference]: Start difference. First operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 11:17:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:55,529 INFO L93 Difference]: Finished difference Result 122 states and 176 transitions. [2022-07-12 11:17:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 11:17:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2022-07-12 11:17:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:55,536 INFO L225 Difference]: With dead ends: 122 [2022-07-12 11:17:55,536 INFO L226 Difference]: Without dead ends: 57 [2022-07-12 11:17:55,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 11:17:55,540 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:55,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:17:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-12 11:17:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-12 11:17:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:17:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-07-12 11:17:55,577 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 66 [2022-07-12 11:17:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:55,577 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-07-12 11:17:55,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 11:17:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-07-12 11:17:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 11:17:55,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:55,580 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:55,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:17:55,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1147031271, now seen corresponding path program 1 times [2022-07-12 11:17:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:55,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31531381] [2022-07-12 11:17:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:55,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:17:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 11:17:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:17:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:17:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:17:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:17:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:17:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:17:55,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:55,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31531381] [2022-07-12 11:17:55,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31531381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:17:55,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:17:55,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:17:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183795826] [2022-07-12 11:17:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:17:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:17:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:17:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:17:55,718 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 11:17:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:55,735 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2022-07-12 11:17:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:17:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2022-07-12 11:17:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:55,738 INFO L225 Difference]: With dead ends: 112 [2022-07-12 11:17:55,738 INFO L226 Difference]: Without dead ends: 59 [2022-07-12 11:17:55,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:17:55,741 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:55,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 142 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:17:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-12 11:17:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-07-12 11:17:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:17:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2022-07-12 11:17:55,758 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 66 [2022-07-12 11:17:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:55,759 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2022-07-12 11:17:55,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 11:17:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2022-07-12 11:17:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 11:17:55,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:55,762 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:55,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:17:55,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 824593321, now seen corresponding path program 1 times [2022-07-12 11:17:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989376047] [2022-07-12 11:17:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:17:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:17:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 11:17:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:17:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:17:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:17:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:17:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:17:55,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:55,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989376047] [2022-07-12 11:17:55,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989376047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:55,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411173012] [2022-07-12 11:17:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:55,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:55,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:55,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:17:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:17:56,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:17:56,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:17:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:17:56,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411173012] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:17:56,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:17:56,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-12 11:17:56,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657057171] [2022-07-12 11:17:56,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:17:56,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:17:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:17:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:17:56,262 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 11:17:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:56,306 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2022-07-12 11:17:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:17:56,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-07-12 11:17:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:56,307 INFO L225 Difference]: With dead ends: 117 [2022-07-12 11:17:56,307 INFO L226 Difference]: Without dead ends: 64 [2022-07-12 11:17:56,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:17:56,308 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 6 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:56,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 212 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:17:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-12 11:17:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-12 11:17:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 50 states have internal predecessors, (60), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:17:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2022-07-12 11:17:56,314 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 68 [2022-07-12 11:17:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:56,314 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2022-07-12 11:17:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 11:17:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2022-07-12 11:17:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 11:17:56,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:56,316 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:56,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:17:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:56,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:56,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -615657745, now seen corresponding path program 2 times [2022-07-12 11:17:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:56,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901667048] [2022-07-12 11:17:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:17:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:17:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 11:17:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:17:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 11:17:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:17:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:17:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:17:56,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901667048] [2022-07-12 11:17:56,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901667048] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616685446] [2022-07-12 11:17:56,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:17:56,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:56,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:56,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:56,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:17:56,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 11:17:56,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:17:56,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 11:17:56,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 11:17:57,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:17:57,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616685446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:17:57,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:17:57,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-12 11:17:57,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767888086] [2022-07-12 11:17:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:17:57,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:17:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:57,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:17:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:17:57,083 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 11:17:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:57,195 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2022-07-12 11:17:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:17:57,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 74 [2022-07-12 11:17:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:57,197 INFO L225 Difference]: With dead ends: 70 [2022-07-12 11:17:57,197 INFO L226 Difference]: Without dead ends: 66 [2022-07-12 11:17:57,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:17:57,198 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:57,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 238 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:17:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-12 11:17:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-07-12 11:17:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:17:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2022-07-12 11:17:57,205 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 74 [2022-07-12 11:17:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:57,206 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2022-07-12 11:17:57,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 11:17:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2022-07-12 11:17:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 11:17:57,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:57,208 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 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] [2022-07-12 11:17:57,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 11:17:57,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 11:17:57,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:57,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash -694003548, now seen corresponding path program 1 times [2022-07-12 11:17:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:57,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898596764] [2022-07-12 11:17:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:57,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:17:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:17:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 11:17:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:17:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 11:17:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:17:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:17:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:17:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:17:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:17:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 11:17:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:57,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898596764] [2022-07-12 11:17:57,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898596764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735539175] [2022-07-12 11:17:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:57,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:57,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:57,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:17:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:57,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:17:57,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 11:17:57,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:17:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 11:17:57,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735539175] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:17:57,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:17:57,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-12 11:17:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134362898] [2022-07-12 11:17:57,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:17:57,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 11:17:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 11:17:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:17:57,866 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:17:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:57,899 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2022-07-12 11:17:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:17:57,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 91 [2022-07-12 11:17:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:57,901 INFO L225 Difference]: With dead ends: 133 [2022-07-12 11:17:57,901 INFO L226 Difference]: Without dead ends: 78 [2022-07-12 11:17:57,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:17:57,902 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:57,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 352 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:17:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-12 11:17:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-12 11:17:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:17:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2022-07-12 11:17:57,908 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 91 [2022-07-12 11:17:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:57,908 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2022-07-12 11:17:57,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:17:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2022-07-12 11:17:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 11:17:57,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:57,910 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 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] [2022-07-12 11:17:57,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:17:58,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:58,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1419325160, now seen corresponding path program 2 times [2022-07-12 11:17:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:58,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729858212] [2022-07-12 11:17:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:17:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:17:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:17:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:17:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:17:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:17:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:17:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:17:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:17:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:17:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 11:17:58,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:58,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729858212] [2022-07-12 11:17:58,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729858212] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:58,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544536134] [2022-07-12 11:17:58,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:17:58,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:58,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:58,311 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:58,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:17:58,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:17:58,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:17:58,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 11:17:58,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 11:17:58,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:17:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 11:17:58,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544536134] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:17:58,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:17:58,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-12 11:17:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330860135] [2022-07-12 11:17:58,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:17:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 11:17:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 11:17:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-12 11:17:58,782 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:17:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:58,863 INFO L93 Difference]: Finished difference Result 157 states and 200 transitions. [2022-07-12 11:17:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 11:17:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 103 [2022-07-12 11:17:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:58,865 INFO L225 Difference]: With dead ends: 157 [2022-07-12 11:17:58,865 INFO L226 Difference]: Without dead ends: 102 [2022-07-12 11:17:58,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-12 11:17:58,867 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 33 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:58,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 212 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:17:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-12 11:17:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-07-12 11:17:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:17:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-07-12 11:17:58,880 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 103 [2022-07-12 11:17:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:58,880 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-07-12 11:17:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:17:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-07-12 11:17:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 11:17:58,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:58,891 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 8, 8, 8, 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] [2022-07-12 11:17:58,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:17:59,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:59,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1263900672, now seen corresponding path program 3 times [2022-07-12 11:17:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:59,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055564408] [2022-07-12 11:17:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:17:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:17:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:17:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 11:17:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:17:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:17:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:17:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:17:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:17:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:17:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 11:17:59,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:59,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055564408] [2022-07-12 11:17:59,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055564408] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:59,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030103049] [2022-07-12 11:17:59,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:17:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:59,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:59,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:59,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:18:00,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-12 11:18:00,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:18:00,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 11:18:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:18:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2022-07-12 11:18:00,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:18:00,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030103049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:18:00,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:18:00,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2022-07-12 11:18:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237029486] [2022-07-12 11:18:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:18:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:18:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:18:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:18:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=503, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:18:00,572 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:18:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:18:00,676 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2022-07-12 11:18:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:18:00,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 127 [2022-07-12 11:18:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:18:00,678 INFO L225 Difference]: With dead ends: 146 [2022-07-12 11:18:00,678 INFO L226 Difference]: Without dead ends: 104 [2022-07-12 11:18:00,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:18:00,679 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 81 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:18:00,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 305 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:18:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-12 11:18:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-07-12 11:18:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 88 states have internal predecessors, (98), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:18:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2022-07-12 11:18:00,686 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 127 [2022-07-12 11:18:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:18:00,699 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2022-07-12 11:18:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:18:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2022-07-12 11:18:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 11:18:00,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:18:00,701 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 8, 8, 8, 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] [2022-07-12 11:18:00,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:18:00,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:00,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:18:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:18:00,916 INFO L85 PathProgramCache]: Analyzing trace with hash 385852158, now seen corresponding path program 1 times [2022-07-12 11:18:00,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:18:00,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260952761] [2022-07-12 11:18:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:00,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:18:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:18:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:18:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:18:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 11:18:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:18:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:18:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:18:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:18:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:18:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:18:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:18:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260952761] [2022-07-12 11:18:01,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260952761] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:18:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531207044] [2022-07-12 11:18:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:01,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:01,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:18:01,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:18:01,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:18:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:01,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:18:01,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:18:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 11:18:01,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:18:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:02,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531207044] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:18:02,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:18:02,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-12 11:18:02,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128477513] [2022-07-12 11:18:02,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:18:02,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-12 11:18:02,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:18:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-12 11:18:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-12 11:18:02,189 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:18:02,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:18:02,318 INFO L93 Difference]: Finished difference Result 207 states and 262 transitions. [2022-07-12 11:18:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-12 11:18:02,318 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 129 [2022-07-12 11:18:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:18:02,319 INFO L225 Difference]: With dead ends: 207 [2022-07-12 11:18:02,319 INFO L226 Difference]: Without dead ends: 151 [2022-07-12 11:18:02,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-12 11:18:02,320 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 46 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:18:02,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 702 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:18:02,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-12 11:18:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-12 11:18:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.0735294117647058) internal successors, (146), 136 states have internal predecessors, (146), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:18:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2022-07-12 11:18:02,343 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 129 [2022-07-12 11:18:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:18:02,344 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2022-07-12 11:18:02,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:18:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2022-07-12 11:18:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-12 11:18:02,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:18:02,347 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 8, 8, 8, 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] [2022-07-12 11:18:02,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:18:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:02,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:18:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:18:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2057415474, now seen corresponding path program 2 times [2022-07-12 11:18:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:18:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080878847] [2022-07-12 11:18:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:18:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:18:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:18:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:18:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:18:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:18:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 11:18:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:18:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:18:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:18:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-12 11:18:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:18:03,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080878847] [2022-07-12 11:18:03,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080878847] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:18:03,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341967592] [2022-07-12 11:18:03,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:18:03,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:03,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:18:03,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:18:03,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:18:03,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:18:03,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:18:03,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 11:18:03,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:18:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 11:18:04,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:18:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:06,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341967592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:18:06,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:18:06,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-07-12 11:18:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790075507] [2022-07-12 11:18:06,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:18:06,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-07-12 11:18:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:18:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-07-12 11:18:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-07-12 11:18:06,131 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:18:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:18:06,407 INFO L93 Difference]: Finished difference Result 303 states and 382 transitions. [2022-07-12 11:18:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-12 11:18:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 177 [2022-07-12 11:18:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:18:06,409 INFO L225 Difference]: With dead ends: 303 [2022-07-12 11:18:06,409 INFO L226 Difference]: Without dead ends: 247 [2022-07-12 11:18:06,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-07-12 11:18:06,411 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 94 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:18:06,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 492 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:18:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-12 11:18:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-07-12 11:18:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.043103448275862) internal successors, (242), 232 states have internal predecessors, (242), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 11:18:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 263 transitions. [2022-07-12 11:18:06,439 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 263 transitions. Word has length 177 [2022-07-12 11:18:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:18:06,439 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 263 transitions. [2022-07-12 11:18:06,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:18:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 263 transitions. [2022-07-12 11:18:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-12 11:18:06,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:18:06,442 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 8, 8, 8, 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] [2022-07-12 11:18:06,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:18:06,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:06,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:18:06,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:18:06,659 INFO L85 PathProgramCache]: Analyzing trace with hash 959518830, now seen corresponding path program 3 times [2022-07-12 11:18:06,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:18:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074398323] [2022-07-12 11:18:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:18:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 11:18:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 11:18:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 11:18:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 11:18:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 11:18:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 11:18:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-12 11:18:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-12 11:18:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 11:18:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-12 11:18:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:09,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:18:09,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074398323] [2022-07-12 11:18:09,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074398323] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:18:09,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149300564] [2022-07-12 11:18:09,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:18:09,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:09,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:18:09,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:18:09,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:18:11,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-07-12 11:18:11,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:18:11,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 11:18:11,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:18:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 8904 trivial. 0 not checked. [2022-07-12 11:18:12,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:18:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 8927 trivial. 0 not checked. [2022-07-12 11:18:13,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149300564] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:18:13,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:18:13,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 13, 16] total 121 [2022-07-12 11:18:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316492049] [2022-07-12 11:18:13,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:18:13,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-07-12 11:18:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:18:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-07-12 11:18:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4762, Invalid=9758, Unknown=0, NotChecked=0, Total=14520 [2022-07-12 11:18:13,560 INFO L87 Difference]: Start difference. First operand 247 states and 263 transitions. Second operand has 121 states, 121 states have (on average 2.3801652892561984) internal successors, (288), 119 states have internal predecessors, (288), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-12 11:18:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:18:14,830 INFO L93 Difference]: Finished difference Result 348 states and 395 transitions. [2022-07-12 11:18:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-07-12 11:18:14,837 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.3801652892561984) internal successors, (288), 119 states have internal predecessors, (288), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) Word has length 273 [2022-07-12 11:18:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:18:14,838 INFO L225 Difference]: With dead ends: 348 [2022-07-12 11:18:14,838 INFO L226 Difference]: Without dead ends: 292 [2022-07-12 11:18:14,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4843, Invalid=11413, Unknown=0, NotChecked=0, Total=16256 [2022-07-12 11:18:14,841 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 268 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:18:14,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1073 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 11:18:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-12 11:18:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2022-07-12 11:18:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 250 states have (on average 1.044) internal successors, (261), 250 states have internal predecessors, (261), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 11:18:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 288 transitions. [2022-07-12 11:18:14,851 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 288 transitions. Word has length 273 [2022-07-12 11:18:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:18:14,851 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 288 transitions. [2022-07-12 11:18:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.3801652892561984) internal successors, (288), 119 states have internal predecessors, (288), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-12 11:18:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 288 transitions. [2022-07-12 11:18:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-12 11:18:14,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:18:14,853 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 8, 8, 8, 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] [2022-07-12 11:18:14,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:18:15,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 11:18:15,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:18:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:18:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1536111070, now seen corresponding path program 1 times [2022-07-12 11:18:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:18:15,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710318246] [2022-07-12 11:18:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:18:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-12 11:18:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 11:18:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 11:18:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 11:18:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 11:18:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-12 11:18:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-12 11:18:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-12 11:18:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-12 11:18:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 11:18:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9140 backedges. 2 proven. 9025 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:18,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:18:18,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710318246] [2022-07-12 11:18:18,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710318246] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:18:18,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974301977] [2022-07-12 11:18:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:18,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:18,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:18:18,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:18:18,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:18:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:18,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-12 11:18:18,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:18:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9140 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 11:18:19,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:18:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9140 backedges. 2 proven. 9025 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 11:18:24,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974301977] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:18:24,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:18:24,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 163 [2022-07-12 11:18:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072662148] [2022-07-12 11:18:24,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:18:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-07-12 11:18:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:18:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-07-12 11:18:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2022-07-12 11:18:24,124 INFO L87 Difference]: Start difference. First operand 268 states and 288 transitions. Second operand has 163 states, 163 states have (on average 2.2883435582822087) internal successors, (373), 163 states have internal predecessors, (373), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:18:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:18:24,537 INFO L93 Difference]: Finished difference Result 473 states and 577 transitions. [2022-07-12 11:18:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-07-12 11:18:24,538 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 2.2883435582822087) internal successors, (373), 163 states have internal predecessors, (373), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 275 [2022-07-12 11:18:24,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:18:24,541 INFO L225 Difference]: With dead ends: 473 [2022-07-12 11:18:24,541 INFO L226 Difference]: Without dead ends: 398 [2022-07-12 11:18:24,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2022-07-12 11:18:24,543 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 160 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:18:24,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 492 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:18:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-07-12 11:18:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-07-12 11:18:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 380 states have (on average 1.0289473684210526) internal successors, (391), 380 states have internal predecessors, (391), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 11:18:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 418 transitions. [2022-07-12 11:18:24,558 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 418 transitions. Word has length 275 [2022-07-12 11:18:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:18:24,558 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 418 transitions. [2022-07-12 11:18:24,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 2.2883435582822087) internal successors, (373), 163 states have internal predecessors, (373), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:18:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 418 transitions. [2022-07-12 11:18:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-12 11:18:24,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:18:24,562 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 8, 8, 8, 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] [2022-07-12 11:18:24,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:18:24,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:24,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:18:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:18:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1942762208, now seen corresponding path program 2 times [2022-07-12 11:18:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:18:24,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389926269] [2022-07-12 11:18:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:18:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:18:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-12 11:18:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 11:18:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-12 11:18:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-12 11:18:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-12 11:18:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-07-12 11:18:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-12 11:18:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-07-12 11:18:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-12 11:18:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-07-12 11:18:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:18:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25715 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 25676 trivial. 0 not checked. [2022-07-12 11:18:28,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:18:28,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389926269] [2022-07-12 11:18:28,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389926269] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:18:28,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135510071] [2022-07-12 11:18:28,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:18:28,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:18:28,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:18:28,574 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:18:28,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:19:24,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:19:24,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:19:24,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 3682 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-12 11:19:24,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:19:24,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 11:19:26,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:19:26,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 83 treesize of output 79 [2022-07-12 11:19:26,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:19:26,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 75 [2022-07-12 11:19:26,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 11:19:27,768 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|) 0)) (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12|)))) is different from true [2022-07-12 11:19:28,576 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13| Int)) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13|) 0)))) is different from true [2022-07-12 11:19:29,353 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3|) 0)) (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14|)))) is different from true [2022-07-12 11:19:29,754 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-07-12 11:19:29,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 25 [2022-07-12 11:19:30,900 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|) 0))) (and (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) 0) .cse0) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|) 0) .cse0)))) is different from true [2022-07-12 11:19:31,991 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|) 0))) (and (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|) 0) .cse0) (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) 0) .cse0)))) is different from true [2022-07-12 11:19:33,127 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|) 0))) (and (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|) 0) .cse0) (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) 0) .cse0)))) is different from true [2022-07-12 11:19:36,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 11:19:36,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:19:36,364 INFO L356 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-07-12 11:19:36,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 139 treesize of output 82 [2022-07-12 11:19:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 25715 backedges. 64 proven. 320 refuted. 0 times theorem prover too weak. 25305 trivial. 26 not checked. [2022-07-12 11:19:36,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:19:39,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135510071] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:19:39,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:19:39,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 46 [2022-07-12 11:19:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300874922] [2022-07-12 11:19:39,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:19:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-12 11:19:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:19:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-12 11:19:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1856, Unknown=7, NotChecked=546, Total=2550 [2022-07-12 11:19:39,375 INFO L87 Difference]: Start difference. First operand 398 states and 418 transitions. Second operand has 46 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 41 states have internal predecessors, (102), 10 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-12 11:19:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:19:45,299 INFO L93 Difference]: Finished difference Result 453 states and 482 transitions. [2022-07-12 11:19:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 11:19:45,299 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 41 states have internal predecessors, (102), 10 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) Word has length 405 [2022-07-12 11:19:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:19:45,301 INFO L225 Difference]: With dead ends: 453 [2022-07-12 11:19:45,301 INFO L226 Difference]: Without dead ends: 432 [2022-07-12 11:19:45,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 399 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=261, Invalid=3177, Unknown=8, NotChecked=714, Total=4160 [2022-07-12 11:19:45,302 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 212 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:19:45,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1173 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1448 Invalid, 0 Unknown, 1104 Unchecked, 1.0s Time] [2022-07-12 11:19:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-12 11:19:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 406. [2022-07-12 11:19:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 387 states have (on average 1.0310077519379846) internal successors, (399), 387 states have internal predecessors, (399), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 11:19:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 426 transitions. [2022-07-12 11:19:45,318 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 426 transitions. Word has length 405 [2022-07-12 11:19:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:19:45,319 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 426 transitions. [2022-07-12 11:19:45,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 41 states have internal predecessors, (102), 10 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-12 11:19:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 426 transitions. [2022-07-12 11:19:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-12 11:19:45,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:19:45,324 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 8, 8, 8, 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] [2022-07-12 11:19:45,531 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2022-07-12 11:19:45,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 137 [2022-07-12 11:19:45,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 11:19:45,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:19:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:19:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1880722594, now seen corresponding path program 1 times [2022-07-12 11:19:45,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:19:45,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067528878] [2022-07-12 11:19:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:19:45,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:19:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-12 11:19:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 11:19:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-12 11:19:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-12 11:19:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-12 11:19:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-07-12 11:19:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-12 11:19:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-07-12 11:19:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-12 11:19:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-07-12 11:19:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25715 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 25691 trivial. 0 not checked. [2022-07-12 11:19:46,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:19:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067528878] [2022-07-12 11:19:46,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067528878] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:19:46,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238130695] [2022-07-12 11:19:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:19:46,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:19:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:19:46,664 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:19:46,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:21:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:08,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 3666 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-12 11:21:08,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:21:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25715 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 25656 trivial. 0 not checked. [2022-07-12 11:21:09,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:21:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 25715 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 25712 trivial. 0 not checked. [2022-07-12 11:21:09,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238130695] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:21:09,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:21:09,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 40 [2022-07-12 11:21:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373357601] [2022-07-12 11:21:09,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:21:09,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 11:21:09,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:21:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 11:21:09,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 11:21:09,902 INFO L87 Difference]: Start difference. First operand 406 states and 426 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 37 states have internal predecessors, (111), 10 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (27), 11 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-12 11:21:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:21:11,775 INFO L93 Difference]: Finished difference Result 470 states and 505 transitions. [2022-07-12 11:21:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 11:21:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 37 states have internal predecessors, (111), 10 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (27), 11 states have call predecessors, (27), 10 states have call successors, (27) Word has length 405 [2022-07-12 11:21:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:21:11,779 INFO L225 Difference]: With dead ends: 470 [2022-07-12 11:21:11,779 INFO L226 Difference]: Without dead ends: 433 [2022-07-12 11:21:11,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 802 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=486, Invalid=2820, Unknown=0, NotChecked=0, Total=3306 [2022-07-12 11:21:11,780 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 393 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:21:11,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 694 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:21:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-12 11:21:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 418. [2022-07-12 11:21:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 399 states have (on average 1.0275689223057645) internal successors, (410), 399 states have internal predecessors, (410), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 11:21:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 437 transitions. [2022-07-12 11:21:11,805 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 437 transitions. Word has length 405 [2022-07-12 11:21:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:21:11,806 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 437 transitions. [2022-07-12 11:21:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 37 states have internal predecessors, (111), 10 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (27), 11 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-12 11:21:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 437 transitions. [2022-07-12 11:21:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-12 11:21:11,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:21:11,811 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 8, 8, 8, 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] [2022-07-12 11:21:12,031 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2022-07-12 11:21:12,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2022-07-12 11:21:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 11:21:12,143 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:21:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:21:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1644693224, now seen corresponding path program 4 times [2022-07-12 11:21:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:21:12,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133879520] [2022-07-12 11:21:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:21:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:21:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-12 11:21:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 11:21:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-12 11:21:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-12 11:21:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-12 11:21:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-12 11:21:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-07-12 11:21:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-12 11:21:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-07-12 11:21:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-07-12 11:21:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:21:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 25718 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 25676 trivial. 0 not checked. [2022-07-12 11:21:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:21:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133879520] [2022-07-12 11:21:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133879520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:21:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024845774] [2022-07-12 11:21:20,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 11:21:20,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:21:20,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:21:20,288 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:21:20,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process