./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:21:27,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:21:27,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:21:27,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:21:27,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:21:27,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:21:27,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:21:27,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:21:27,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:21:27,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:21:27,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:21:27,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:21:27,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:21:27,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:21:27,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:21:27,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:21:27,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:21:27,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:21:27,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:21:27,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:21:27,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:21:27,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:21:27,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:21:27,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:21:27,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:21:27,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:21:27,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:21:27,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:21:27,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:21:27,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:21:27,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:21:27,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:21:27,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:21:27,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:21:27,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:21:27,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:21:27,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:21:27,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:21:27,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:21:27,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:21:27,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:21:27,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:21:27,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:21:27,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:21:27,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:21:27,354 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:21:27,354 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:21:27,354 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:21:27,355 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:21:27,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:21:27,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:21:27,356 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:21:27,356 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:21:27,356 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:21:27,357 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:21:27,357 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:21:27,357 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:21:27,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:21:27,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:21:27,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:21:27,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:21:27,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:21:27,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:21:27,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:21:27,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:21:27,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:21:27,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:21:27,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:21:27,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:21:27,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:21:27,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:21:27,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:21:27,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:21:27,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:21:27,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:21:27,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:21:27,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:21:27,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:21:27,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:21:27,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:21:27,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:21:27,365 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2021-10-16 02:21:27,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:21:27,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:21:27,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:21:27,717 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:21:27,718 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:21:27,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/locks/test_locks_6.c [2021-10-16 02:21:27,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/data/da667bbd8/b3ce1397353747f4b2a638cfac46e4d6/FLAG93a21a341 [2021-10-16 02:21:28,383 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:21:28,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/sv-benchmarks/c/locks/test_locks_6.c [2021-10-16 02:21:28,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/data/da667bbd8/b3ce1397353747f4b2a638cfac46e4d6/FLAG93a21a341 [2021-10-16 02:21:28,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/data/da667bbd8/b3ce1397353747f4b2a638cfac46e4d6 [2021-10-16 02:21:28,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:21:28,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:21:28,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:21:28,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:21:28,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:21:28,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:21:28" (1/1) ... [2021-10-16 02:21:28,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fd2844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:28, skipping insertion in model container [2021-10-16 02:21:28,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:21:28" (1/1) ... [2021-10-16 02:21:28,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:21:28,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:21:29,019 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_f0de3498-9aa2-4a05-b93b-912355c843ab/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-16 02:21:29,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:21:29,033 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:21:29,055 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_f0de3498-9aa2-4a05-b93b-912355c843ab/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-16 02:21:29,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:21:29,072 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:21:29,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29 WrapperNode [2021-10-16 02:21:29,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:21:29,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:21:29,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:21:29,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:21:29,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:21:29,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:21:29,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:21:29,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:21:29,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:21:29,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:21:29,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:21:29,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:21:29,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (1/1) ... [2021-10-16 02:21:29,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:21:29,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:21:29,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:21:29,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:21:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:21:29,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:21:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:21:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:21:29,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:21:29,791 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:21:29,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:21:29 BoogieIcfgContainer [2021-10-16 02:21:29,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:21:29,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:21:29,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:21:29,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:21:29,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:21:28" (1/3) ... [2021-10-16 02:21:29,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca8568c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:21:29, skipping insertion in model container [2021-10-16 02:21:29,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:29" (2/3) ... [2021-10-16 02:21:29,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca8568c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:21:29, skipping insertion in model container [2021-10-16 02:21:29,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:21:29" (3/3) ... [2021-10-16 02:21:29,816 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2021-10-16 02:21:29,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:21:29,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:21:29,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:21:29,891 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-16 02:21:29,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:21:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 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) [2021-10-16 02:21:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:21:29,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:29,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:21:29,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:29,920 INFO L82 PathProgramCache]: Analyzing trace with hash 300170485, now seen corresponding path program 1 times [2021-10-16 02:21:29,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:21:29,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322765651] [2021-10-16 02:21:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:29,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:21:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:30,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:21:30,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322765651] [2021-10-16 02:21:30,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322765651] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:30,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:30,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:21:30,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951401036] [2021-10-16 02:21:30,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:30,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:21:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,226 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-16 02:21:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:30,286 INFO L93 Difference]: Finished difference Result 42 states and 65 transitions. [2021-10-16 02:21:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:30,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-16 02:21:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:30,312 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:21:30,313 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 02:21:30,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 02:21:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-10-16 02:21:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-10-16 02:21:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2021-10-16 02:21:30,364 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2021-10-16 02:21:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:30,365 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2021-10-16 02:21:30,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-16 02:21:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2021-10-16 02:21:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:21:30,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:30,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:30,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:21:30,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash 715565087, now seen corresponding path program 1 times [2021-10-16 02:21:30,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:21:30,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951545508] [2021-10-16 02:21:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:30,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:21:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:30,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:21:30,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951545508] [2021-10-16 02:21:30,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951545508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:30,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:30,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:21:30,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659145005] [2021-10-16 02:21:30,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:30,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:21:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,519 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-16 02:21:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:30,544 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2021-10-16 02:21:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:30,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-16 02:21:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:30,546 INFO L225 Difference]: With dead ends: 31 [2021-10-16 02:21:30,546 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 02:21:30,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 02:21:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-10-16 02:21:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2021-10-16 02:21:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2021-10-16 02:21:30,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 7 [2021-10-16 02:21:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:30,553 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-10-16 02:21:30,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-16 02:21:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 26 transitions. [2021-10-16 02:21:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:21:30,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:30,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:30,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:21:30,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 707896202, now seen corresponding path program 1 times [2021-10-16 02:21:30,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:21:30,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982509817] [2021-10-16 02:21:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:30,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:21:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:30,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:21:30,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982509817] [2021-10-16 02:21:30,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982509817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:30,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:30,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:21:30,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078565928] [2021-10-16 02:21:30,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:30,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:21:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,640 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-16 02:21:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:30,684 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2021-10-16 02:21:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-16 02:21:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:30,689 INFO L225 Difference]: With dead ends: 29 [2021-10-16 02:21:30,689 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:21:30,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:21:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2021-10-16 02:21:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-10-16 02:21:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2021-10-16 02:21:30,698 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 8 [2021-10-16 02:21:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:30,699 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-10-16 02:21:30,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-16 02:21:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2021-10-16 02:21:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:21:30,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:30,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:30,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:21:30,703 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash 470161108, now seen corresponding path program 1 times [2021-10-16 02:21:30,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:21:30,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332715012] [2021-10-16 02:21:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:30,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:21:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:30,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:21:30,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332715012] [2021-10-16 02:21:30,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332715012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:30,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:30,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:21:30,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93890920] [2021-10-16 02:21:30,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:30,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:21:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,830 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-16 02:21:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:30,851 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-10-16 02:21:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:30,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-16 02:21:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:30,853 INFO L225 Difference]: With dead ends: 27 [2021-10-16 02:21:30,853 INFO L226 Difference]: Without dead ends: 25 [2021-10-16 02:21:30,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-16 02:21:30,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-10-16 02:21:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-10-16 02:21:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2021-10-16 02:21:30,858 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 9 [2021-10-16 02:21:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:30,859 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 24 transitions. [2021-10-16 02:21:30,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-16 02:21:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2021-10-16 02:21:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:21:30,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:30,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:30,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:21:30,861 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:30,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1690308127, now seen corresponding path program 1 times [2021-10-16 02:21:30,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:21:30,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031052081] [2021-10-16 02:21:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:30,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:21:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:30,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:21:30,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031052081] [2021-10-16 02:21:30,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031052081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:30,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:30,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:21:30,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498135378] [2021-10-16 02:21:30,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:30,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:21:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,952 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-16 02:21:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:30,986 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-16 02:21:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:30,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-16 02:21:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:30,993 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:21:30,993 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:21:30,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:21:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-10-16 02:21:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2021-10-16 02:21:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-10-16 02:21:30,997 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 10 [2021-10-16 02:21:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:30,998 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-10-16 02:21:30,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-16 02:21:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-10-16 02:21:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:21:30,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:30,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:30,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:21:30,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash 860160393, now seen corresponding path program 1 times [2021-10-16 02:21:31,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:21:31,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448083685] [2021-10-16 02:21:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:31,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:21:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:31,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:21:31,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448083685] [2021-10-16 02:21:31,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448083685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:31,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:31,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:21:31,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423656773] [2021-10-16 02:21:31,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:31,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:21:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:31,092 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-16 02:21:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:31,110 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-10-16 02:21:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:31,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-16 02:21:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:31,111 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:21:31,111 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:21:31,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:21:31,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:21:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-16 02:21:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:21:31,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-16 02:21:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:31,114 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:21:31,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-16 02:21:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:21:31,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:21:31,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:21:31,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:21:31,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:21:31,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:31,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:31,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:31,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:31,140 INFO L857 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2021-10-16 02:21:31,141 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:21:31,141 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2021-10-16 02:21:31,141 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-16 02:21:31,142 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2021-10-16 02:21:31,142 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-16 02:21:31,143 INFO L860 garLoopResultBuilder]: At program point L105(lines 7 109) the Hoare annotation is: true [2021-10-16 02:21:31,143 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-16 02:21:31,143 INFO L857 garLoopResultBuilder]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2021-10-16 02:21:31,143 INFO L857 garLoopResultBuilder]: For program point L90(line 90) no Hoare annotation was computed. [2021-10-16 02:21:31,144 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 107) no Hoare annotation was computed. [2021-10-16 02:21:31,144 INFO L857 garLoopResultBuilder]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2021-10-16 02:21:31,145 INFO L860 garLoopResultBuilder]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2021-10-16 02:21:31,145 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:21:31,145 INFO L860 garLoopResultBuilder]: At program point L108(lines 6 109) the Hoare annotation is: true [2021-10-16 02:21:31,145 INFO L857 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2021-10-16 02:21:31,146 INFO L857 garLoopResultBuilder]: For program point L100(line 100) no Hoare annotation was computed. [2021-10-16 02:21:31,146 INFO L853 garLoopResultBuilder]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2021-10-16 02:21:31,146 INFO L857 garLoopResultBuilder]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2021-10-16 02:21:31,147 INFO L857 garLoopResultBuilder]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2021-10-16 02:21:31,154 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:21:31,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:21:31 BoogieIcfgContainer [2021-10-16 02:21:31,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:21:31,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:21:31,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:21:31,169 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:21:31,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:21:29" (3/4) ... [2021-10-16 02:21:31,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:21:31,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-16 02:21:31,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-16 02:21:31,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:21:31,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:21:31,252 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:21:31,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:21:31,254 INFO L168 Benchmark]: Toolchain (without parser) took 2535.82 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 49.4 MB in the beginning and 47.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:31,255 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:21:31,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.52 ms. Allocated memory is still 90.2 MB. Free memory was 49.0 MB in the beginning and 66.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:31,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.37 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 64.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:31,257 INFO L168 Benchmark]: Boogie Preprocessor took 50.78 ms. Allocated memory is still 90.2 MB. Free memory was 64.8 MB in the beginning and 63.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:21:31,258 INFO L168 Benchmark]: RCFGBuilder took 625.00 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 47.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:31,258 INFO L168 Benchmark]: TraceAbstraction took 1370.53 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 46.7 MB in the beginning and 50.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:31,259 INFO L168 Benchmark]: Witness Printer took 84.03 ms. Allocated memory is still 109.1 MB. Free memory was 50.7 MB in the beginning and 47.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:31,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.52 ms. Allocated memory is still 90.2 MB. Free memory was 49.0 MB in the beginning and 66.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.37 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 64.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.78 ms. Allocated memory is still 90.2 MB. Free memory was 64.8 MB in the beginning and 63.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 625.00 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 47.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1370.53 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 46.7 MB in the beginning and 50.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 84.03 ms. Allocated memory is still 109.1 MB. Free memory was 50.7 MB in the beginning and 47.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1273.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 15.0ms, AutomataDifference: 300.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 21.5ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 140 SDtfs, 116 SDslu, 196 SDs, 0 SdLazy, 60 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.0ms SsaConstructionTime, 169.3ms SatisfiabilityAnalysisTime, 434.1ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:21:31,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0de3498-9aa2-4a05-b93b-912355c843ab/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...