./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-021.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-021.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY --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 32bit --witnessprinter.graph.data.programhash e914ef70bca7623c78f76c7515a1a020f1916ebb0197185152701ddd5f622073 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:02:42,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:02:42,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:02:42,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:02:42,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:02:42,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:02:42,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:02:42,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:02:42,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:02:42,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:02:42,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:02:42,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:02:42,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:02:42,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:02:42,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:02:42,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:02:42,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:02:42,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:02:42,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:02:42,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:02:42,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:02:42,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:02:42,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:02:42,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:02:42,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:02:42,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:02:42,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:02:42,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:02:42,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:02:42,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:02:42,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:02:42,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:02:42,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:02:42,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:02:42,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:02:42,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:02:42,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:02:42,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:02:42,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:02:42,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:02:42,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:02:42,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:02:42,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:02:42,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:02:42,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:02:42,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:02:42,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:02:42,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:02:42,525 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:02:42,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:02:42,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:02:42,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:02:42,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:02:42,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:02:42,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:02:42,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:02:42,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:02:42,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:02:42,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:02:42,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:02:42,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:02:42,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:02:42,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:02:42,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:02:42,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:02:42,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:02:42,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:02:42,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:02:42,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:02:42,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:02:42,531 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:02:42,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:02:42,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:02:42,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:02:42,532 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e914ef70bca7623c78f76c7515a1a020f1916ebb0197185152701ddd5f622073 [2021-11-07 08:02:42,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:02:42,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:02:42,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:02:42,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:02:42,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:02:42,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/xcsp/Dubois-021.c [2021-11-07 08:02:43,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/e31bdc8b6/fc6066d04a674002aea43d78a1f9b7fb/FLAG7dd153219 [2021-11-07 08:02:43,685 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:02:43,686 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/sv-benchmarks/c/xcsp/Dubois-021.c [2021-11-07 08:02:43,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/e31bdc8b6/fc6066d04a674002aea43d78a1f9b7fb/FLAG7dd153219 [2021-11-07 08:02:43,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/e31bdc8b6/fc6066d04a674002aea43d78a1f9b7fb [2021-11-07 08:02:43,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:02:43,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:02:43,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:02:43,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:02:43,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:02:43,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:02:43" (1/1) ... [2021-11-07 08:02:43,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb9a29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:43, skipping insertion in model container [2021-11-07 08:02:43,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:02:43" (1/1) ... [2021-11-07 08:02:43,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:02:44,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:02:44,509 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/sv-benchmarks/c/xcsp/Dubois-021.c[15084,15097] [2021-11-07 08:02:44,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:02:44,545 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:02:44,686 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/sv-benchmarks/c/xcsp/Dubois-021.c[15084,15097] [2021-11-07 08:02:44,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:02:44,706 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:02:44,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44 WrapperNode [2021-11-07 08:02:44,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:02:44,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:02:44,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:02:44,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:02:44,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:02:44,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:02:44,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:02:44,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:02:44,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:44,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:45,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:02:45,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:02:45,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:02:45,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:02:45,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (1/1) ... [2021-11-07 08:02:45,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:02:45,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:02:45,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:02:45,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:02:45,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:02:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:02:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:02:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:02:46,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:02:46,255 INFO L299 CfgBuilder]: Removed 340 assume(true) statements. [2021-11-07 08:02:46,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:02:46 BoogieIcfgContainer [2021-11-07 08:02:46,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:02:46,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:02:46,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:02:46,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:02:46,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:02:43" (1/3) ... [2021-11-07 08:02:46,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e0f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:02:46, skipping insertion in model container [2021-11-07 08:02:46,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:44" (2/3) ... [2021-11-07 08:02:46,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e0f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:02:46, skipping insertion in model container [2021-11-07 08:02:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:02:46" (3/3) ... [2021-11-07 08:02:46,271 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-021.c [2021-11-07 08:02:46,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:02:46,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:02:46,350 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:02:46,358 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:02:46,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:02:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 340 states have (on average 1.4970588235294118) internal successors, (509), 341 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-07 08:02:46,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:46,421 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:02:46,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:02:46,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash -659545479, now seen corresponding path program 1 times [2021-11-07 08:02:46,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:02:46,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108096032] [2021-11-07 08:02:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:46,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:02:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:46,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:02:46,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108096032] [2021-11-07 08:02:46,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108096032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:02:46,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:02:46,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:02:46,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810158999] [2021-11-07 08:02:46,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:02:46,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:02:46,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:02:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:02:46,938 INFO L87 Difference]: Start difference. First operand has 342 states, 340 states have (on average 1.4970588235294118) internal successors, (509), 341 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:47,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:47,004 INFO L93 Difference]: Finished difference Result 678 states and 1012 transitions. [2021-11-07 08:02:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:02:47,006 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-11-07 08:02:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:47,022 INFO L225 Difference]: With dead ends: 678 [2021-11-07 08:02:47,023 INFO L226 Difference]: Without dead ends: 339 [2021-11-07 08:02:47,028 INFO L786 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 [2021-11-07 08:02:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-07 08:02:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-07 08:02:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0) internal successors, (338), 338 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 338 transitions. [2021-11-07 08:02:47,116 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 338 transitions. Word has length 338 [2021-11-07 08:02:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:47,120 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 338 transitions. [2021-11-07 08:02:47,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:47,121 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 338 transitions. [2021-11-07 08:02:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-07 08:02:47,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:47,137 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:02:47,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:02:47,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:02:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash 939443859, now seen corresponding path program 1 times [2021-11-07 08:02:47,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:02:47,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841869047] [2021-11-07 08:02:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:47,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:02:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:02:48,355 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:02:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:02:49,191 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:02:49,192 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:02:49,194 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:02:49,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:02:49,199 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 08:02:49,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:02:49,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:02:49 BoogieIcfgContainer [2021-11-07 08:02:49,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:02:49,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:02:49,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:02:49,408 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:02:49,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:02:46" (3/4) ... [2021-11-07 08:02:49,412 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:02:49,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:02:49,415 INFO L168 Benchmark]: Toolchain (without parser) took 5464.77 ms. Allocated memory was 90.2 MB in the beginning and 153.1 MB in the end (delta: 62.9 MB). Free memory was 54.0 MB in the beginning and 81.4 MB in the end (delta: -27.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:02:49,416 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:02:49,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.95 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.8 MB in the beginning and 68.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:02:49,418 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.38 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 58.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:02:49,419 INFO L168 Benchmark]: Boogie Preprocessor took 150.15 ms. Allocated memory is still 111.1 MB. Free memory was 58.8 MB in the beginning and 53.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:02:49,420 INFO L168 Benchmark]: RCFGBuilder took 1240.18 ms. Allocated memory is still 111.1 MB. Free memory was 53.4 MB in the beginning and 57.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:02:49,421 INFO L168 Benchmark]: TraceAbstraction took 3145.68 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 56.8 MB in the beginning and 82.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:02:49,422 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 153.1 MB. Free memory was 82.4 MB in the beginning and 81.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:02:49,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.95 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.8 MB in the beginning and 68.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 158.38 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 58.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 150.15 ms. Allocated memory is still 111.1 MB. Free memory was 58.8 MB in the beginning and 53.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1240.18 ms. Allocated memory is still 111.1 MB. Free memory was 53.4 MB in the beginning and 57.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3145.68 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 56.8 MB in the beginning and 82.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 153.1 MB. Free memory was 82.4 MB in the beginning and 81.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 446]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 442. Possible FailurePath: [L22] int cond0; [L23] int dummy = 0; [L24] int N; [L25] int var0; [L26] var0 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L29] int var1; [L30] var1 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L33] int var2; [L34] var2 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L37] int var3; [L38] var3 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L41] int var4; [L42] var4 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L45] int var5; [L46] var5 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L49] int var6; [L50] var6 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L53] int var7; [L54] var7 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L57] int var8; [L58] var8 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L61] int var9; [L62] var9 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L65] int var10; [L66] var10 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L69] int var11; [L70] var11 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L73] int var12; [L74] var12 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L77] int var13; [L78] var13 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L81] int var14; [L82] var14 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L85] int var15; [L86] var15 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L89] int var16; [L90] var16 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L93] int var17; [L94] var17 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L97] int var18; [L98] var18 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L101] int var19; [L102] var19 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L105] int var20; [L106] var20 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L109] int var21; [L110] var21 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L113] int var22; [L114] var22 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L117] int var23; [L118] var23 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L121] int var24; [L122] var24 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L125] int var25; [L126] var25 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L129] int var26; [L130] var26 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L133] int var27; [L134] var27 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L137] int var28; [L138] var28 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L141] int var29; [L142] var29 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L145] int var30; [L146] var30 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L149] int var31; [L150] var31 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L153] int var32; [L154] var32 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L157] int var33; [L158] var33 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L161] int var34; [L162] var34 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L165] int var35; [L166] var35 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L169] int var36; [L170] var36 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L173] int var37; [L174] var37 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L177] int var38; [L178] var38 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L181] int var39; [L182] var39 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L185] int var40; [L186] var40 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L189] int var41; [L190] var41 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L193] int var42; [L194] var42 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L197] int var43; [L198] var43 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L201] int var44; [L202] var44 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L205] int var45; [L206] var45 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L209] int var46; [L210] var46 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L213] int var47; [L214] var47 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L217] int var48; [L218] var48 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L221] int var49; [L222] var49 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L225] int var50; [L226] var50 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L229] int var51; [L230] var51 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L233] int var52; [L234] var52 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L237] int var53; [L238] var53 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L241] int var54; [L242] var54 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L245] int var55; [L246] var55 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L249] int var56; [L250] var56 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L253] int var57; [L254] var57 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L257] int var58; [L258] var58 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L261] int var59; [L262] var59 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L265] int var60; [L266] var60 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L269] int var61; [L270] var61 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L273] int var62; [L274] var62 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L277] int myvar0 = 1; [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L446] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 342 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 676 NumberOfCodeBlocks, 676 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-11-07 08:02:49,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-021.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY --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 32bit --witnessprinter.graph.data.programhash e914ef70bca7623c78f76c7515a1a020f1916ebb0197185152701ddd5f622073 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:02:52,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:02:52,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:02:52,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:02:52,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:02:52,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:02:52,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:02:52,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:02:52,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:02:52,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:02:52,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:02:52,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:02:52,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:02:52,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:02:52,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:02:52,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:02:52,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:02:52,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:02:52,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:02:52,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:02:52,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:02:52,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:02:52,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:02:52,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:02:52,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:02:52,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:02:52,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:02:52,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:02:52,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:02:52,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:02:52,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:02:52,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:02:52,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:02:52,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:02:52,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:02:52,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:02:52,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:02:52,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:02:52,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:02:52,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:02:52,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:02:52,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 08:02:52,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:02:52,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:02:52,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:02:52,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:02:52,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:02:52,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:02:52,706 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:02:52,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:02:52,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:02:52,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:02:52,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:02:52,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:02:52,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:02:52,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:02:52,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:02:52,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:02:52,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:02:52,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:02:52,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:02:52,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:02:52,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:02:52,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:02:52,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:02:52,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:02:52,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:02:52,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:02:52,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:02:52,714 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:02:52,714 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:02:52,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:02:52,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:02:52,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:02:52,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:02:52,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:02:52,716 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e914ef70bca7623c78f76c7515a1a020f1916ebb0197185152701ddd5f622073 [2021-11-07 08:02:53,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:02:53,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:02:53,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:02:53,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:02:53,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:02:53,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/xcsp/Dubois-021.c [2021-11-07 08:02:53,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/f74ab865e/42f14ca2fef341ea80ec1ce2c2c33ce1/FLAG8a3598af1 [2021-11-07 08:02:54,070 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:02:54,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/sv-benchmarks/c/xcsp/Dubois-021.c [2021-11-07 08:02:54,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/f74ab865e/42f14ca2fef341ea80ec1ce2c2c33ce1/FLAG8a3598af1 [2021-11-07 08:02:54,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/data/f74ab865e/42f14ca2fef341ea80ec1ce2c2c33ce1 [2021-11-07 08:02:54,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:02:54,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:02:54,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:02:54,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:02:54,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:02:54,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:02:54" (1/1) ... [2021-11-07 08:02:54,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ef76b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:54, skipping insertion in model container [2021-11-07 08:02:54,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:02:54" (1/1) ... [2021-11-07 08:02:54,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:02:54,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:02:54,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/sv-benchmarks/c/xcsp/Dubois-021.c[15084,15097] [2021-11-07 08:02:54,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:02:54,909 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:02:55,061 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/sv-benchmarks/c/xcsp/Dubois-021.c[15084,15097] [2021-11-07 08:02:55,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:02:55,108 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:02:55,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55 WrapperNode [2021-11-07 08:02:55,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:02:55,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:02:55,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:02:55,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:02:55,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:02:55,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:02:55,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:02:55,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:02:55,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:02:55,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:02:55,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:02:55,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:02:55,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (1/1) ... [2021-11-07 08:02:55,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:02:55,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:02:55,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:02:55,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:02:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:02:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:02:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:02:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:02:57,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:02:57,138 INFO L299 CfgBuilder]: Removed 340 assume(true) statements. [2021-11-07 08:02:57,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:02:57 BoogieIcfgContainer [2021-11-07 08:02:57,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:02:57,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:02:57,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:02:57,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:02:57,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:02:54" (1/3) ... [2021-11-07 08:02:57,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b56b565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:02:57, skipping insertion in model container [2021-11-07 08:02:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:02:55" (2/3) ... [2021-11-07 08:02:57,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b56b565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:02:57, skipping insertion in model container [2021-11-07 08:02:57,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:02:57" (3/3) ... [2021-11-07 08:02:57,156 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-021.c [2021-11-07 08:02:57,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:02:57,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:02:57,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:02:57,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:02:57,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:02:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 340 states have (on average 1.4970588235294118) internal successors, (509), 341 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-07 08:02:57,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:57,352 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:02:57,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:02:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:57,361 INFO L85 PathProgramCache]: Analyzing trace with hash -659545479, now seen corresponding path program 1 times [2021-11-07 08:02:57,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:02:57,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810341578] [2021-11-07 08:02:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:57,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:02:57,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:02:57,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:02:57,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:02:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:57,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 08:02:57,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:59,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:02:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:59,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:02:59,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810341578] [2021-11-07 08:02:59,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810341578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:02:59,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:02:59,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:02:59,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645196590] [2021-11-07 08:02:59,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:02:59,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:02:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:02:59,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:02:59,706 INFO L87 Difference]: Start difference. First operand has 342 states, 340 states have (on average 1.4970588235294118) internal successors, (509), 341 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:59,787 INFO L93 Difference]: Finished difference Result 678 states and 1012 transitions. [2021-11-07 08:02:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:02:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-11-07 08:02:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:59,805 INFO L225 Difference]: With dead ends: 678 [2021-11-07 08:02:59,806 INFO L226 Difference]: Without dead ends: 339 [2021-11-07 08:02:59,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:02:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-07 08:02:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-07 08:02:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0) internal successors, (338), 338 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 338 transitions. [2021-11-07 08:02:59,880 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 338 transitions. Word has length 338 [2021-11-07 08:02:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:59,881 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 338 transitions. [2021-11-07 08:02:59,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 338 transitions. [2021-11-07 08:02:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-07 08:02:59,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:59,893 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:02:59,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:00,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:03:00,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:03:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:00,110 INFO L85 PathProgramCache]: Analyzing trace with hash 939443859, now seen corresponding path program 1 times [2021-11-07 08:03:00,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:03:00,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175815101] [2021-11-07 08:03:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:00,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:03:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:03:00,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:03:00,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5671809e-337f-4008-bc69-fa7ee4bed789/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 08:03:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:44,346 WARN L261 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 342 conjunts are in the unsatisfiable core [2021-11-07 08:03:44,422 INFO L286 TraceCheckSpWp]: Computing forward predicates...