./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/unreach-call.prp --file /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678b828e 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 /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_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 22b7134559cee5b94733780824c42967974e4d66 ............................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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 /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 22b7134559cee5b94733780824c42967974e4d66 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-678b828 [2020-12-07 17:13:57,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-07 17:13:57,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-07 17:13:57,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-07 17:13:57,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-07 17:13:57,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-07 17:13:57,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-07 17:13:57,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-07 17:13:57,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-07 17:13:57,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-07 17:13:57,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-07 17:13:57,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-07 17:13:57,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-07 17:13:57,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-07 17:13:57,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-07 17:13:57,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-07 17:13:57,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-07 17:13:57,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-07 17:13:57,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-07 17:13:57,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-07 17:13:57,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-07 17:13:57,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-07 17:13:57,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-07 17:13:57,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-07 17:13:57,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-07 17:13:57,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-07 17:13:57,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-07 17:13:57,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-07 17:13:57,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-07 17:13:57,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-07 17:13:57,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-07 17:13:57,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-07 17:13:57,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-07 17:13:57,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-07 17:13:57,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-07 17:13:57,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-07 17:13:57,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-07 17:13:57,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-07 17:13:57,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-07 17:13:57,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-07 17:13:57,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-07 17:13:57,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-07 17:13:57,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-07 17:13:57,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-07 17:13:57,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-07 17:13:57,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-07 17:13:57,303 INFO L138 SettingsManager]: * Use SBE=true [2020-12-07 17:13:57,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-07 17:13:57,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-07 17:13:57,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-07 17:13:57,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-07 17:13:57,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-07 17:13:57,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-07 17:13:57,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-07 17:13:57,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-07 17:13:57,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-07 17:13:57,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-07 17:13:57,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-07 17:13:57,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-07 17:13:57,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-07 17:13:57,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-07 17:13:57,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-07 17:13:57,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-07 17:13:57,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-07 17:13:57,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-07 17:13:57,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-07 17:13:57,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-07 17:13:57,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b7134559cee5b94733780824c42967974e4d66 [2020-12-07 17:13:57,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-07 17:13:57,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-07 17:13:57,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-07 17:13:57,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-07 17:13:57,803 INFO L275 PluginConnector]: CDTParser initialized [2020-12-07 17:13:57,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i [2020-12-07 17:13:57,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34858b626/7263a5e6841848b0b741e91dea1c7055/FLAGb2475ac0f [2020-12-07 17:13:59,030 INFO L306 CDTParser]: Found 1 translation units. [2020-12-07 17:13:59,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i [2020-12-07 17:13:59,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34858b626/7263a5e6841848b0b741e91dea1c7055/FLAGb2475ac0f [2020-12-07 17:13:59,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34858b626/7263a5e6841848b0b741e91dea1c7055 [2020-12-07 17:13:59,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-07 17:13:59,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-07 17:13:59,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-07 17:13:59,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-07 17:13:59,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-07 17:13:59,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:13:59" (1/1) ... [2020-12-07 17:13:59,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c7aa45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:59, skipping insertion in model container [2020-12-07 17:13:59,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:13:59" (1/1) ... [2020-12-07 17:13:59,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-07 17:13:59,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-07 17:13:59,926 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4491,4504] [2020-12-07 17:13:59,935 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4551,4564] [2020-12-07 17:13:59,956 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-07 17:13:59,966 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-07 17:14:00,792 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,793 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,794 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,796 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,798 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,823 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,824 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,827 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,828 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,830 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,832 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,833 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:00,834 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-07 17:14:01,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-07 17:14:01,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-07 17:14:01,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-07 17:14:01,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-07 17:14:01,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-07 17:14:01,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-07 17:14:01,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-07 17:14:01,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-07 17:14:01,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-07 17:14:01,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-07 17:14:01,164 INFO L203 MainTranslator]: Completed pre-run [2020-12-07 17:14:01,194 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4491,4504] [2020-12-07 17:14:01,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4551,4564] [2020-12-07 17:14:01,198 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-07 17:14:01,199 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-07 17:14:01,279 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,283 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,284 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,288 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,290 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,317 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,321 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,325 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,328 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,330 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,334 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,336 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,338 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:01,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-07 17:14:01,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-07 17:14:01,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-07 17:14:01,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-07 17:14:01,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-07 17:14:01,388 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-07 17:14:01,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-07 17:14:01,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-07 17:14:01,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-07 17:14:01,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-07 17:14:01,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-07 17:14:02,092 INFO L208 MainTranslator]: Completed translation [2020-12-07 17:14:02,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02 WrapperNode [2020-12-07 17:14:02,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-07 17:14:02,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-07 17:14:02,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-07 17:14:02,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-07 17:14:02,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-07 17:14:02,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-07 17:14:02,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-07 17:14:02,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-07 17:14:02,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... [2020-12-07 17:14:02,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-07 17:14:02,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-07 17:14:02,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-07 17:14:02,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-07 17:14:02,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-07 17:14:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-07 17:14:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-07 17:14:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-07 17:14:02,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-07 17:14:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-07 17:14:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-07 17:14:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-07 17:14:03,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-07 17:14:03,082 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2020-12-07 17:14:03,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:03 BoogieIcfgContainer [2020-12-07 17:14:03,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-07 17:14:03,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-07 17:14:03,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-07 17:14:03,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-07 17:14:03,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:13:59" (1/3) ... [2020-12-07 17:14:03,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3af59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:14:03, skipping insertion in model container [2020-12-07 17:14:03,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:02" (2/3) ... [2020-12-07 17:14:03,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3af59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:14:03, skipping insertion in model container [2020-12-07 17:14:03,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:03" (3/3) ... [2020-12-07 17:14:03,097 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2020-12-07 17:14:03,116 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-07 17:14:03,121 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-07 17:14:03,140 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-07 17:14:03,173 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-07 17:14:03,173 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-07 17:14:03,173 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-07 17:14:03,173 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-07 17:14:03,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-07 17:14:03,174 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-07 17:14:03,174 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-07 17:14:03,174 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-07 17:14:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-07 17:14:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-07 17:14:03,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:03,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:03,205 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:03,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2009978325, now seen corresponding path program 1 times [2020-12-07 17:14:03,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-07 17:14:03,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494362742] [2020-12-07 17:14:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-07 17:14:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:03,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494362742] [2020-12-07 17:14:03,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:03,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-07 17:14:03,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110346544] [2020-12-07 17:14:03,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-07 17:14:03,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-07 17:14:03,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-07 17:14:03,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-07 17:14:03,571 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-07 17:14:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:03,597 INFO L93 Difference]: Finished difference Result 103 states and 138 transitions. [2020-12-07 17:14:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-07 17:14:03,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-07 17:14:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:03,609 INFO L225 Difference]: With dead ends: 103 [2020-12-07 17:14:03,610 INFO L226 Difference]: Without dead ends: 47 [2020-12-07 17:14:03,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-07 17:14:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-07 17:14:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-07 17:14:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-07 17:14:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-12-07 17:14:03,657 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2020-12-07 17:14:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:03,658 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-12-07 17:14:03,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-07 17:14:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-12-07 17:14:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-07 17:14:03,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:03,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:03,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-07 17:14:03,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:03,661 INFO L82 PathProgramCache]: Analyzing trace with hash 329723105, now seen corresponding path program 1 times [2020-12-07 17:14:03,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-07 17:14:03,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777403654] [2020-12-07 17:14:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-07 17:14:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:04,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777403654] [2020-12-07 17:14:04,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:04,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-07 17:14:04,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466077969] [2020-12-07 17:14:04,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-07 17:14:04,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-07 17:14:04,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-07 17:14:04,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-07 17:14:04,107 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 6 states. [2020-12-07 17:14:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:04,278 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-12-07 17:14:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-07 17:14:04,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-07 17:14:04,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:04,281 INFO L225 Difference]: With dead ends: 47 [2020-12-07 17:14:04,281 INFO L226 Difference]: Without dead ends: 45 [2020-12-07 17:14:04,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-07 17:14:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-07 17:14:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-07 17:14:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-07 17:14:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-07 17:14:04,301 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 16 [2020-12-07 17:14:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:04,302 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-07 17:14:04,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-07 17:14:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-07 17:14:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-07 17:14:04,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:04,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:04,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-07 17:14:04,307 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:04,308 INFO L82 PathProgramCache]: Analyzing trace with hash -963549789, now seen corresponding path program 1 times [2020-12-07 17:14:04,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-07 17:14:04,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464111462] [2020-12-07 17:14:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-07 17:14:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-07 17:14:04,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-07 17:14:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-07 17:14:04,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-07 17:14:04,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-07 17:14:04,614 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-07 17:14:04,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-07 17:14:04,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:14:04 BoogieIcfgContainer [2020-12-07 17:14:04,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-07 17:14:04,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-07 17:14:04,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-07 17:14:04,657 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-07 17:14:04,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:03" (3/4) ... [2020-12-07 17:14:04,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-07 17:14:04,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-07 17:14:04,665 INFO L168 Benchmark]: Toolchain (without parser) took 5171.99 ms. Allocated memory was 52.4 MB in the beginning and 125.8 MB in the end (delta: 73.4 MB). Free memory was 34.2 MB in the beginning and 44.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:04,666 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 41.9 MB. Free memory was 22.1 MB in the beginning and 22.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-07 17:14:04,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2599.68 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 34.0 MB in the beginning and 61.7 MB in the end (delta: -27.7 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:04,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 151.27 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 56.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:04,669 INFO L168 Benchmark]: Boogie Preprocessor took 91.72 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 54.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:04,670 INFO L168 Benchmark]: RCFGBuilder took 746.10 ms. Allocated memory is still 92.3 MB. Free memory was 53.9 MB in the beginning and 53.6 MB in the end (delta: 227.4 kB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:04,671 INFO L168 Benchmark]: TraceAbstraction took 1569.25 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 53.0 MB in the beginning and 45.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:04,672 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 125.8 MB. Free memory was 45.3 MB in the beginning and 44.3 MB in the end (delta: 993.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-07 17:14:04,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 41.9 MB. Free memory was 22.1 MB in the beginning and 22.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2599.68 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 34.0 MB in the beginning and 61.7 MB in the end (delta: -27.7 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 151.27 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 56.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.72 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 54.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 746.10 ms. Allocated memory is still 92.3 MB. Free memory was 53.9 MB in the beginning and 53.6 MB in the end (delta: 227.4 kB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1569.25 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 53.0 MB in the beginning and 45.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.97 ms. Allocated memory is still 125.8 MB. Free memory was 45.3 MB in the beginning and 44.3 MB in the end (delta: 993.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5885. Possible FailurePath: [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c; [L211] COND FALSE !(!cond) [L5911] unsigned size; [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND FALSE !(n > 0) [L5876] return s; [L211] COND FALSE !(!cond) [L223] COND FALSE !(!cond) [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; [L223] COND TRUE !cond [L223] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 70 SDslu, 76 SDs, 0 SdLazy, 39 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-678b828 [2020-12-07 17:14:07,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-07 17:14:07,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-07 17:14:07,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-07 17:14:07,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-07 17:14:07,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-07 17:14:07,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-07 17:14:07,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-07 17:14:07,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-07 17:14:07,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-07 17:14:07,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-07 17:14:07,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-07 17:14:07,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-07 17:14:07,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-07 17:14:07,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-07 17:14:07,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-07 17:14:07,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-07 17:14:07,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-07 17:14:07,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-07 17:14:07,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-07 17:14:07,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-07 17:14:07,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-07 17:14:07,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-07 17:14:07,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-07 17:14:07,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-07 17:14:07,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-07 17:14:07,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-07 17:14:07,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-07 17:14:07,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-07 17:14:07,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-07 17:14:07,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-07 17:14:07,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-07 17:14:07,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-07 17:14:07,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-07 17:14:07,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-07 17:14:07,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-07 17:14:07,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-07 17:14:07,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-07 17:14:07,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-07 17:14:07,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-07 17:14:07,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-07 17:14:07,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2020-12-07 17:14:07,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-07 17:14:07,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-07 17:14:07,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-07 17:14:07,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-07 17:14:07,581 INFO L138 SettingsManager]: * Use SBE=true [2020-12-07 17:14:07,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-07 17:14:07,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-07 17:14:07,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-07 17:14:07,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-07 17:14:07,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-07 17:14:07,584 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-07 17:14:07,584 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-07 17:14:07,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-07 17:14:07,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-07 17:14:07,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-07 17:14:07,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-07 17:14:07,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-07 17:14:07,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-07 17:14:07,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-07 17:14:07,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-07 17:14:07,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-07 17:14:07,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-07 17:14:07,587 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-07 17:14:07,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-07 17:14:07,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-07 17:14:07,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-07 17:14:07,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-07 17:14:07,587 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b7134559cee5b94733780824c42967974e4d66 [2020-12-07 17:14:07,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-07 17:14:08,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-07 17:14:08,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-07 17:14:08,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-07 17:14:08,018 INFO L275 PluginConnector]: CDTParser initialized [2020-12-07 17:14:08,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i [2020-12-07 17:14:08,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da4523d17/a94c1d65700e45d89ecd715b0bc0dddd/FLAGe8aa577f3 [2020-12-07 17:14:09,152 INFO L306 CDTParser]: Found 1 translation units. [2020-12-07 17:14:09,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i [2020-12-07 17:14:09,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da4523d17/a94c1d65700e45d89ecd715b0bc0dddd/FLAGe8aa577f3 [2020-12-07 17:14:09,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da4523d17/a94c1d65700e45d89ecd715b0bc0dddd [2020-12-07 17:14:09,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-07 17:14:09,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-07 17:14:09,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-07 17:14:09,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-07 17:14:09,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-07 17:14:09,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:14:09" (1/1) ... [2020-12-07 17:14:09,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436583d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:09, skipping insertion in model container [2020-12-07 17:14:09,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:14:09" (1/1) ... [2020-12-07 17:14:09,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-07 17:14:09,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-07 17:14:10,049 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4491,4504] [2020-12-07 17:14:10,058 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4551,4564] [2020-12-07 17:14:10,088 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-07 17:14:10,096 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-07 17:14:10,692 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,693 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,694 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,695 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,696 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,716 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,718 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,720 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,721 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,724 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,726 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,727 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,727 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:10,947 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-07 17:14:10,948 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-07 17:14:10,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-07 17:14:10,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-07 17:14:10,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-07 17:14:10,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-07 17:14:10,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-07 17:14:10,955 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-07 17:14:10,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-07 17:14:10,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-07 17:14:11,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-07 17:14:11,068 INFO L203 MainTranslator]: Completed pre-run [2020-12-07 17:14:11,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4491,4504] [2020-12-07 17:14:11,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/memset_override_0_harness.i[4551,4564] [2020-12-07 17:14:11,090 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-07 17:14:11,091 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-07 17:14:11,194 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,197 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,200 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,202 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,204 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,231 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,231 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,233 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,234 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,235 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,236 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,237 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,237 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-07 17:14:11,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-07 17:14:11,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-07 17:14:11,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-07 17:14:11,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-07 17:14:11,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-07 17:14:11,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-07 17:14:11,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-07 17:14:11,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-07 17:14:11,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-07 17:14:11,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-07 17:14:11,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-07 17:14:12,027 INFO L208 MainTranslator]: Completed translation [2020-12-07 17:14:12,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12 WrapperNode [2020-12-07 17:14:12,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-07 17:14:12,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-07 17:14:12,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-07 17:14:12,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-07 17:14:12,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-07 17:14:12,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-07 17:14:12,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-07 17:14:12,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-07 17:14:12,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... [2020-12-07 17:14:12,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-07 17:14:12,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-07 17:14:12,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-07 17:14:12,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-07 17:14:12,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-07 17:14:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-07 17:14:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-07 17:14:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-07 17:14:12,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-07 17:14:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-07 17:14:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-07 17:14:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2020-12-07 17:14:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-12-07 17:14:13,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-07 17:14:13,169 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2020-12-07 17:14:13,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:13 BoogieIcfgContainer [2020-12-07 17:14:13,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-07 17:14:13,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-07 17:14:13,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-07 17:14:13,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-07 17:14:13,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:14:09" (1/3) ... [2020-12-07 17:14:13,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a5ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:14:13, skipping insertion in model container [2020-12-07 17:14:13,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:12" (2/3) ... [2020-12-07 17:14:13,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a5ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:14:13, skipping insertion in model container [2020-12-07 17:14:13,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:13" (3/3) ... [2020-12-07 17:14:13,180 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2020-12-07 17:14:13,197 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-07 17:14:13,203 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-07 17:14:13,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-07 17:14:13,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-07 17:14:13,246 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-07 17:14:13,247 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-07 17:14:13,247 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-07 17:14:13,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-07 17:14:13,247 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-07 17:14:13,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-07 17:14:13,247 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-07 17:14:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-07 17:14:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-07 17:14:13,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:13,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:13,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:13,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2009978325, now seen corresponding path program 1 times [2020-12-07 17:14:13,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:13,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651520078] [2020-12-07 17:14:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:13,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-07 17:14:13,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:13,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:13,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651520078] [2020-12-07 17:14:13,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:13,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-07 17:14:13,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145174912] [2020-12-07 17:14:13,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-07 17:14:13,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:13,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-07 17:14:13,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-07 17:14:13,614 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-07 17:14:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:13,652 INFO L93 Difference]: Finished difference Result 103 states and 138 transitions. [2020-12-07 17:14:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-07 17:14:13,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-07 17:14:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:13,667 INFO L225 Difference]: With dead ends: 103 [2020-12-07 17:14:13,667 INFO L226 Difference]: Without dead ends: 47 [2020-12-07 17:14:13,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-07 17:14:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-07 17:14:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-07 17:14:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-07 17:14:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-12-07 17:14:13,724 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2020-12-07 17:14:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:13,729 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-12-07 17:14:13,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-07 17:14:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-12-07 17:14:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-07 17:14:13,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:13,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:13,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-07 17:14:13,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash 329723105, now seen corresponding path program 1 times [2020-12-07 17:14:13,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:13,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968886158] [2020-12-07 17:14:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:14,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-07 17:14:14,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:14,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:14,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968886158] [2020-12-07 17:14:14,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:14,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-07 17:14:14,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630617279] [2020-12-07 17:14:14,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-07 17:14:14,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:14,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-07 17:14:14,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-07 17:14:14,221 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 6 states. [2020-12-07 17:14:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:14,433 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-12-07 17:14:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-07 17:14:14,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-07 17:14:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:14,436 INFO L225 Difference]: With dead ends: 47 [2020-12-07 17:14:14,439 INFO L226 Difference]: Without dead ends: 45 [2020-12-07 17:14:14,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-07 17:14:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-07 17:14:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-07 17:14:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-07 17:14:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-07 17:14:14,459 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 16 [2020-12-07 17:14:14,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:14,462 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-07 17:14:14,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-07 17:14:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-07 17:14:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-07 17:14:14,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:14,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:14,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-07 17:14:14,669 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash -963549789, now seen corresponding path program 1 times [2020-12-07 17:14:14,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:14,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25067964] [2020-12-07 17:14:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-07 17:14:14,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:14,998 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-07 17:14:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:15,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:15,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25067964] [2020-12-07 17:14:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-07 17:14:15,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473171855] [2020-12-07 17:14:15,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-07 17:14:15,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:15,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-07 17:14:15,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-07 17:14:15,046 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2020-12-07 17:14:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:15,334 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-12-07 17:14:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-07 17:14:15,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-07 17:14:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:15,336 INFO L225 Difference]: With dead ends: 45 [2020-12-07 17:14:15,336 INFO L226 Difference]: Without dead ends: 43 [2020-12-07 17:14:15,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-07 17:14:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-07 17:14:15,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-07 17:14:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-07 17:14:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-12-07 17:14:15,361 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 18 [2020-12-07 17:14:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:15,364 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-12-07 17:14:15,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-07 17:14:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-12-07 17:14:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-07 17:14:15,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:15,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:15,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-07 17:14:15,584 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:15,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash -59070895, now seen corresponding path program 1 times [2020-12-07 17:14:15,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:15,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553298875] [2020-12-07 17:14:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-07 17:14:15,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:15,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:15,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553298875] [2020-12-07 17:14:15,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:15,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-07 17:14:15,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544384694] [2020-12-07 17:14:15,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-07 17:14:15,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:15,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-07 17:14:15,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-07 17:14:15,852 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-12-07 17:14:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:15,932 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2020-12-07 17:14:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-07 17:14:15,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-07 17:14:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:15,935 INFO L225 Difference]: With dead ends: 48 [2020-12-07 17:14:15,935 INFO L226 Difference]: Without dead ends: 46 [2020-12-07 17:14:15,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-07 17:14:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-07 17:14:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-12-07 17:14:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-07 17:14:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-12-07 17:14:15,954 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2020-12-07 17:14:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:15,955 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-12-07 17:14:15,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-07 17:14:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-12-07 17:14:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-07 17:14:15,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:15,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:16,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-07 17:14:16,171 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:16,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1945883960, now seen corresponding path program 1 times [2020-12-07 17:14:16,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:16,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982399052] [2020-12-07 17:14:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:16,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-07 17:14:16,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:16,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:16,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982399052] [2020-12-07 17:14:16,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:16,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-07 17:14:16,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440932956] [2020-12-07 17:14:16,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-07 17:14:16,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-07 17:14:16,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-07 17:14:16,585 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 9 states. [2020-12-07 17:14:17,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:17,186 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2020-12-07 17:14:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-07 17:14:17,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-07 17:14:17,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:17,188 INFO L225 Difference]: With dead ends: 78 [2020-12-07 17:14:17,188 INFO L226 Difference]: Without dead ends: 63 [2020-12-07 17:14:17,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-07 17:14:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-07 17:14:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2020-12-07 17:14:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-07 17:14:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-07 17:14:17,199 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 28 [2020-12-07 17:14:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:17,199 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-07 17:14:17,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-07 17:14:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-07 17:14:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-07 17:14:17,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:17,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:17,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-07 17:14:17,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash -20878187, now seen corresponding path program 1 times [2020-12-07 17:14:17,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:17,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683853603] [2020-12-07 17:14:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:17,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-07 17:14:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:17,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:17,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683853603] [2020-12-07 17:14:17,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:17,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-07 17:14:17,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331419152] [2020-12-07 17:14:17,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-07 17:14:17,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-07 17:14:17,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-07 17:14:17,838 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 8 states. [2020-12-07 17:14:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:18,241 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-12-07 17:14:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-07 17:14:18,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-07 17:14:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:18,243 INFO L225 Difference]: With dead ends: 86 [2020-12-07 17:14:18,243 INFO L226 Difference]: Without dead ends: 57 [2020-12-07 17:14:18,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-12-07 17:14:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-07 17:14:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-07 17:14:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-07 17:14:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-07 17:14:18,268 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 29 [2020-12-07 17:14:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:18,269 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-07 17:14:18,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-07 17:14:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-07 17:14:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-07 17:14:18,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:18,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:18,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-07 17:14:18,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1012014150, now seen corresponding path program 1 times [2020-12-07 17:14:18,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:18,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288073757] [2020-12-07 17:14:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:18,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-07 17:14:18,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:18,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:18,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288073757] [2020-12-07 17:14:18,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:18,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-07 17:14:18,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696516829] [2020-12-07 17:14:18,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-07 17:14:18,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:18,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-07 17:14:18,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-07 17:14:18,892 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2020-12-07 17:14:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:19,366 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2020-12-07 17:14:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-07 17:14:19,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-07 17:14:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:19,368 INFO L225 Difference]: With dead ends: 64 [2020-12-07 17:14:19,368 INFO L226 Difference]: Without dead ends: 42 [2020-12-07 17:14:19,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-07 17:14:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-07 17:14:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-07 17:14:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-07 17:14:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-12-07 17:14:19,376 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 30 [2020-12-07 17:14:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:19,377 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-12-07 17:14:19,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-07 17:14:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-12-07 17:14:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-07 17:14:19,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:19,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:19,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-07 17:14:19,588 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:19,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1013503085, now seen corresponding path program 1 times [2020-12-07 17:14:19,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:19,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404376192] [2020-12-07 17:14:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:19,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-07 17:14:19,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:20,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-07 17:14:20,298 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-07 17:14:20,299 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-07 17:14:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:20,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404376192] [2020-12-07 17:14:20,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-07 17:14:20,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-12-07 17:14:20,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291377134] [2020-12-07 17:14:20,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-07 17:14:20,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-07 17:14:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-12-07 17:14:20,346 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 14 states. [2020-12-07 17:14:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:21,040 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-12-07 17:14:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-07 17:14:21,046 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-12-07 17:14:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:21,051 INFO L225 Difference]: With dead ends: 77 [2020-12-07 17:14:21,052 INFO L226 Difference]: Without dead ends: 48 [2020-12-07 17:14:21,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-12-07 17:14:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-07 17:14:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-07 17:14:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-07 17:14:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-12-07 17:14:21,080 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 31 [2020-12-07 17:14:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:21,080 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-12-07 17:14:21,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-07 17:14:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-12-07 17:14:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-07 17:14:21,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:21,083 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-07 17:14:21,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-07 17:14:21,284 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:21,285 INFO L82 PathProgramCache]: Analyzing trace with hash -315016307, now seen corresponding path program 2 times [2020-12-07 17:14:21,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:21,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191025829] [2020-12-07 17:14:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:21,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-07 17:14:21,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:22,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-07 17:14:22,657 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-07 17:14:22,657 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-07 17:14:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-07 17:14:22,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191025829] [2020-12-07 17:14:22,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-07 17:14:22,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2020-12-07 17:14:22,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270538948] [2020-12-07 17:14:22,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-07 17:14:22,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:22,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-07 17:14:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-12-07 17:14:22,723 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 20 states. [2020-12-07 17:14:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:23,903 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2020-12-07 17:14:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-07 17:14:23,904 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2020-12-07 17:14:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:23,905 INFO L225 Difference]: With dead ends: 85 [2020-12-07 17:14:23,905 INFO L226 Difference]: Without dead ends: 56 [2020-12-07 17:14:23,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-12-07 17:14:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-07 17:14:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-07 17:14:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-07 17:14:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-12-07 17:14:23,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 37 [2020-12-07 17:14:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-12-07 17:14:23,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-07 17:14:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-12-07 17:14:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-07 17:14:23,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:23,916 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:24,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-07 17:14:24,131 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:24,132 INFO L82 PathProgramCache]: Analyzing trace with hash 676237957, now seen corresponding path program 3 times [2020-12-07 17:14:24,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:24,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003097383] [2020-12-07 17:14:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-07 17:14:24,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-07 17:14:24,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-07 17:14:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-07 17:14:24,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-07 17:14:24,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003097383] [2020-12-07 17:14:24,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-07 17:14:24,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-07 17:14:24,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050162277] [2020-12-07 17:14:24,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-07 17:14:24,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-07 17:14:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-07 17:14:24,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-07 17:14:24,770 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 11 states. [2020-12-07 17:14:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-07 17:14:25,398 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2020-12-07 17:14:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-07 17:14:25,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-12-07 17:14:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-07 17:14:25,401 INFO L225 Difference]: With dead ends: 77 [2020-12-07 17:14:25,401 INFO L226 Difference]: Without dead ends: 58 [2020-12-07 17:14:25,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-07 17:14:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-07 17:14:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-12-07 17:14:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-07 17:14:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-12-07 17:14:25,416 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 45 [2020-12-07 17:14:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-07 17:14:25,417 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-12-07 17:14:25,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-07 17:14:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-12-07 17:14:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-07 17:14:25,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-07 17:14:25,421 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-07 17:14:25,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-07 17:14:25,624 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-07 17:14:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-07 17:14:25,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1995109817, now seen corresponding path program 1 times [2020-12-07 17:14:25,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-07 17:14:25,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839918764] [2020-12-07 17:14:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-07 17:14:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-07 17:14:26,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-07 17:14:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-07 17:14:26,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-07 17:14:26,493 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-07 17:14:26,494 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-07 17:14:26,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-07 17:14:26,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:14:26 BoogieIcfgContainer [2020-12-07 17:14:26,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-07 17:14:26,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-07 17:14:26,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-07 17:14:26,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-07 17:14:26,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:13" (3/4) ... [2020-12-07 17:14:26,857 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-07 17:14:26,974 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-07 17:14:26,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-07 17:14:26,980 INFO L168 Benchmark]: Toolchain (without parser) took 17295.05 ms. Allocated memory was 48.2 MB in the beginning and 138.4 MB in the end (delta: 90.2 MB). Free memory was 29.9 MB in the beginning and 57.7 MB in the end (delta: -27.8 MB). Peak memory consumption was 63.7 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,983 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-07 17:14:26,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2342.94 ms. Allocated memory was 48.2 MB in the beginning and 75.5 MB in the end (delta: 27.3 MB). Free memory was 29.7 MB in the beginning and 26.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.25 ms. Allocated memory is still 75.5 MB. Free memory was 26.4 MB in the beginning and 21.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,986 INFO L168 Benchmark]: Boogie Preprocessor took 87.20 ms. Allocated memory is still 75.5 MB. Free memory was 21.5 MB in the beginning and 18.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,987 INFO L168 Benchmark]: RCFGBuilder took 920.45 ms. Allocated memory is still 75.5 MB. Free memory was 18.6 MB in the beginning and 41.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,987 INFO L168 Benchmark]: TraceAbstraction took 13678.46 ms. Allocated memory was 75.5 MB in the beginning and 138.4 MB in the end (delta: 62.9 MB). Free memory was 40.8 MB in the beginning and 63.9 MB in the end (delta: -23.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,992 INFO L168 Benchmark]: Witness Printer took 126.00 ms. Allocated memory is still 138.4 MB. Free memory was 63.9 MB in the beginning and 57.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-07 17:14:26,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2342.94 ms. Allocated memory was 48.2 MB in the beginning and 75.5 MB in the end (delta: 27.3 MB). Free memory was 29.7 MB in the beginning and 26.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.25 ms. Allocated memory is still 75.5 MB. Free memory was 26.4 MB in the beginning and 21.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.20 ms. Allocated memory is still 75.5 MB. Free memory was 21.5 MB in the beginning and 18.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 920.45 ms. Allocated memory is still 75.5 MB. Free memory was 18.6 MB in the beginning and 41.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13678.46 ms. Allocated memory was 75.5 MB in the beginning and 138.4 MB in the end (delta: 62.9 MB). Free memory was 40.8 MB in the beginning and 63.9 MB in the end (delta: -23.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 126.00 ms. Allocated memory is still 138.4 MB. Free memory was 63.9 MB in the beginning and 57.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c; [L211] COND FALSE !(!cond) [L5911] unsigned size; [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND FALSE !(i < n) [L5876] return s; [L211] COND FALSE !(!cond) [L223] COND FALSE !(!cond) [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; [L223] COND FALSE !(!cond) [L5888] uint64_t *d = (uint64_t *)dst; [L5890] size_t i = 0; [L5890] COND TRUE i < num_uint64s [L5891] d[i] = 0 [L5890] ++i [L5890] COND FALSE !(i < num_uint64s) [L5894] return dst; [L223] COND FALSE !(!cond) [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L5660] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) [L5664] a[i] [L5664] b[i] [L223] COND TRUE !cond [L223] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 11, TraceHistogramMax: 8, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 364 SDtfs, 1076 SDslu, 911 SDs, 0 SdLazy, 653 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 320 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 329 ConstructedInterpolants, 33 QuantifiedInterpolants, 68979 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1073 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 64/98 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...