./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i --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_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8 --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 fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:07:46,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:07:46,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:07:46,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:07:46,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:07:46,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:07:46,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:07:46,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:07:46,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:07:46,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:07:46,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:07:46,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:07:46,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:07:46,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:07:46,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:07:46,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:07:46,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:07:46,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:07:46,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:07:46,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:07:46,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:07:46,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:07:46,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:07:46,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:07:46,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:07:46,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:07:46,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:07:46,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:07:46,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:07:46,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:07:46,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:07:46,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:07:46,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:07:46,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:07:46,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:07:46,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:07:46,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:07:46,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:07:46,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:07:46,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:07:46,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:07:46,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:07:46,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:07:46,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:07:46,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:07:46,269 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:07:46,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:07:46,270 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:07:46,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:07:46,270 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:07:46,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:07:46,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:07:46,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:07:46,280 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:07:46,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:07:46,281 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:07:46,282 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:07:46,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:07:46,283 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:07:46,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:07:46,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:07:46,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:07:46,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:07:46,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:07:46,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:07:46,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:07:46,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:07:46,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:07:46,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:07:46,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:07:46,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:07:46,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:07:46,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:46,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:07:46,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:07:46,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:07:46,291 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:07:46,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:07:46,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:07:46,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:07:46,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:07:46,292 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_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 [2021-11-07 01:07:46,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:07:46,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:07:46,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:07:46,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:07:46,669 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:07:46,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2021-11-07 01:07:46,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/data/df28e816d/5341475567a345deb7118601c9a97abf/FLAG59e16623e [2021-11-07 01:07:47,328 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:07:47,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2021-11-07 01:07:47,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/data/df28e816d/5341475567a345deb7118601c9a97abf/FLAG59e16623e [2021-11-07 01:07:47,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/data/df28e816d/5341475567a345deb7118601c9a97abf [2021-11-07 01:07:47,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:07:47,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:07:47,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:47,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:07:47,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:07:47,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:47" (1/1) ... [2021-11-07 01:07:47,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d63566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:47, skipping insertion in model container [2021-11-07 01:07:47,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:47" (1/1) ... [2021-11-07 01:07:47,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:07:47,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:07:47,968 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_a7393a68-d59c-4afd-888e-0f2b2e84fba2/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2021-11-07 01:07:48,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:48,260 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:07:48,274 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_a7393a68-d59c-4afd-888e-0f2b2e84fba2/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2021-11-07 01:07:48,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:48,367 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:07:48,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48 WrapperNode [2021-11-07 01:07:48,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:48,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:48,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:07:48,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:07:48,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:48,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:07:48,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:07:48,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:07:48,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:07:48,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:07:48,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:07:48,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:07:48,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:48,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:48,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:07:48,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:07:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:07:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:07:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:07:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:07:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-07 01:07:48,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-07 01:07:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-07 01:07:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-07 01:07:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-07 01:07:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-07 01:07:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:07:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:07:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:07:48,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:07:48,564 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:07:48,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:07:48,974 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 01:07:48,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:48 BoogieIcfgContainer [2021-11-07 01:07:48,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:07:48,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:07:48,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:07:48,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:07:48,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:07:47" (1/3) ... [2021-11-07 01:07:48,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:48, skipping insertion in model container [2021-11-07 01:07:48,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48" (2/3) ... [2021-11-07 01:07:48,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:48, skipping insertion in model container [2021-11-07 01:07:48,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:48" (3/3) ... [2021-11-07 01:07:48,988 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2021-11-07 01:07:48,994 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:07:48,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:07:48,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:07:48,995 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:07:49,055 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,055 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,056 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,056 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,056 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,057 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,057 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,057 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,058 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,058 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,059 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,059 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,060 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,060 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,060 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,060 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,061 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,061 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,061 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,062 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,062 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,063 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,063 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,063 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,080 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,080 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,080 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,080 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,081 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,081 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,081 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,081 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,082 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,082 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,087 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,088 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,101 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,102 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,102 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,102 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,106 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,106 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,107 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,107 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:07:49,110 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-07 01:07:49,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:07:49,163 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=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 [2021-11-07 01:07:49,163 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:07:49,181 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:07:49,195 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-11-07 01:07:49,199 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-11-07 01:07:49,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-11-07 01:07:49,288 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-11-07 01:07:49,305 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 01:07:49,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-11-07 01:07:49,336 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-11-07 01:07:52,684 INFO L131 LiptonReduction]: Checked pairs total: 2829 [2021-11-07 01:07:52,684 INFO L133 LiptonReduction]: Total number of compositions: 71 [2021-11-07 01:07:52,694 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-11-07 01:07:52,737 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 01:07:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 01:07:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:07:52,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:52,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:52,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1803148731, now seen corresponding path program 1 times [2021-11-07 01:07:52,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:52,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580465882] [2021-11-07 01:07:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:52,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:53,009 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 01:07:53,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:53,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580465882] [2021-11-07 01:07:53,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580465882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:53,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:53,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:07:53,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283156656] [2021-11-07 01:07:53,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:07:53,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:07:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:07:53,036 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 4.0) internal successors, (8), 2 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) [2021-11-07 01:07:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:53,070 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-11-07 01:07:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:07:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2021-11-07 01:07:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:53,090 INFO L225 Difference]: With dead ends: 298 [2021-11-07 01:07:53,090 INFO L226 Difference]: Without dead ends: 298 [2021-11-07 01:07:53,091 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 01:07:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-07 01:07:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-07 01:07:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 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 01:07:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-11-07 01:07:53,163 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-11-07 01:07:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:53,164 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-11-07 01:07:53,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-07 01:07:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-11-07 01:07:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:07:53,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:53,166 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:53,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:07:53,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 63027028, now seen corresponding path program 1 times [2021-11-07 01:07:53,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:53,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136073171] [2021-11-07 01:07:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:53,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:53,361 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 01:07:53,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:53,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136073171] [2021-11-07 01:07:53,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136073171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:53,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:53,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:07:53,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102149163] [2021-11-07 01:07:53,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:53,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:53,368 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-11-07 01:07:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:53,456 INFO L93 Difference]: Finished difference Result 552 states and 1504 transitions. [2021-11-07 01:07:53,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2021-11-07 01:07:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:53,466 INFO L225 Difference]: With dead ends: 552 [2021-11-07 01:07:53,466 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 01:07:53,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 01:07:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 298. [2021-11-07 01:07:53,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.6666666666666665) internal successors, (792), 297 states have internal predecessors, (792), 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 01:07:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 792 transitions. [2021-11-07 01:07:53,532 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 792 transitions. Word has length 9 [2021-11-07 01:07:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:53,532 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 792 transitions. [2021-11-07 01:07:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-11-07 01:07:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 792 transitions. [2021-11-07 01:07:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:07:53,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:53,542 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:53,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:07:53,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1953790643, now seen corresponding path program 1 times [2021-11-07 01:07:53,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:53,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417455319] [2021-11-07 01:07:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:53,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:53,666 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 01:07:53,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:53,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417455319] [2021-11-07 01:07:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417455319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:53,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:07:53,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968940458] [2021-11-07 01:07:53,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:53,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:53,670 INFO L87 Difference]: Start difference. First operand 298 states and 792 transitions. Second operand has 5 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) [2021-11-07 01:07:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:53,720 INFO L93 Difference]: Finished difference Result 338 states and 836 transitions. [2021-11-07 01:07:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:07:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2021-11-07 01:07:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:53,723 INFO L225 Difference]: With dead ends: 338 [2021-11-07 01:07:53,724 INFO L226 Difference]: Without dead ends: 222 [2021-11-07 01:07:53,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:07:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-07 01:07:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2021-11-07 01:07:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.585635359116022) internal successors, (468), 181 states have internal predecessors, (468), 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 01:07:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 468 transitions. [2021-11-07 01:07:53,738 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 468 transitions. Word has length 10 [2021-11-07 01:07:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:53,738 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 468 transitions. [2021-11-07 01:07:53,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2021-11-07 01:07:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 468 transitions. [2021-11-07 01:07:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:07:53,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:53,740 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:53,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:07:53,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash -298085546, now seen corresponding path program 1 times [2021-11-07 01:07:53,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:53,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561043973] [2021-11-07 01:07:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:53,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:53,826 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 01:07:53,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:53,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561043973] [2021-11-07 01:07:53,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561043973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:53,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:53,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:07:53,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581850041] [2021-11-07 01:07:53,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:07:53,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:53,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:07:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:07:53,830 INFO L87 Difference]: Start difference. First operand 182 states and 468 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 01:07:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:53,841 INFO L93 Difference]: Finished difference Result 146 states and 331 transitions. [2021-11-07 01:07:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 01:07:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:53,844 INFO L225 Difference]: With dead ends: 146 [2021-11-07 01:07:53,844 INFO L226 Difference]: Without dead ends: 146 [2021-11-07 01:07:53,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:07:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-07 01:07:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-07 01:07:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.282758620689655) internal successors, (331), 145 states have internal predecessors, (331), 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 01:07:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 331 transitions. [2021-11-07 01:07:53,853 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 331 transitions. Word has length 12 [2021-11-07 01:07:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:53,854 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 331 transitions. [2021-11-07 01:07:53,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 01:07:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 331 transitions. [2021-11-07 01:07:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:07:53,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:53,856 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:53,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 01:07:53,856 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1857293390, now seen corresponding path program 1 times [2021-11-07 01:07:53,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:53,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312011035] [2021-11-07 01:07:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:53,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:53,997 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 01:07:53,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:53,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312011035] [2021-11-07 01:07:53,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312011035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:53,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:53,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:07:53,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063103371] [2021-11-07 01:07:54,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:54,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:54,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:54,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:54,003 INFO L87 Difference]: Start difference. First operand 146 states and 331 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 01:07:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:54,030 INFO L93 Difference]: Finished difference Result 101 states and 200 transitions. [2021-11-07 01:07:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-07 01:07:54,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:54,034 INFO L225 Difference]: With dead ends: 101 [2021-11-07 01:07:54,034 INFO L226 Difference]: Without dead ends: 101 [2021-11-07 01:07:54,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-07 01:07:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2021-11-07 01:07:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 96 states have internal predecessors, (190), 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 01:07:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 190 transitions. [2021-11-07 01:07:54,042 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 190 transitions. Word has length 13 [2021-11-07 01:07:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:54,042 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 190 transitions. [2021-11-07 01:07:54,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 01:07:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 190 transitions. [2021-11-07 01:07:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:07:54,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:54,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:54,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:07:54,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash 663717008, now seen corresponding path program 1 times [2021-11-07 01:07:54,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:54,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388738294] [2021-11-07 01:07:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:54,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:54,213 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 01:07:54,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:54,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388738294] [2021-11-07 01:07:54,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388738294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:54,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:54,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:07:54,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052849643] [2021-11-07 01:07:54,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:54,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:54,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:54,217 INFO L87 Difference]: Start difference. First operand 97 states and 190 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 01:07:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:54,263 INFO L93 Difference]: Finished difference Result 77 states and 151 transitions. [2021-11-07 01:07:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-11-07 01:07:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:54,265 INFO L225 Difference]: With dead ends: 77 [2021-11-07 01:07:54,265 INFO L226 Difference]: Without dead ends: 69 [2021-11-07 01:07:54,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-07 01:07:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-11-07 01:07:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.984375) internal successors, (127), 64 states have internal predecessors, (127), 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 01:07:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 127 transitions. [2021-11-07 01:07:54,269 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 127 transitions. Word has length 15 [2021-11-07 01:07:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:54,270 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 127 transitions. [2021-11-07 01:07:54,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 01:07:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 127 transitions. [2021-11-07 01:07:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:07:54,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:54,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:54,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:07:54,272 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:07:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1849766004, now seen corresponding path program 1 times [2021-11-07 01:07:54,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:54,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470452254] [2021-11-07 01:07:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:54,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:54,381 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 01:07:54,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:54,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470452254] [2021-11-07 01:07:54,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470452254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:54,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:54,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:07:54,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403529654] [2021-11-07 01:07:54,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:54,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:54,386 INFO L87 Difference]: Start difference. First operand 65 states and 127 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 01:07:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:54,413 INFO L93 Difference]: Finished difference Result 64 states and 126 transitions. [2021-11-07 01:07:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-11-07 01:07:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:54,418 INFO L225 Difference]: With dead ends: 64 [2021-11-07 01:07:54,418 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:07:54,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:07:54,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:07:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:07:54,420 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) [2021-11-07 01:07:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:07:54,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-11-07 01:07:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:54,429 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:07:54,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 01:07:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:07:54,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:07:54,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:07:54,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 01:07:54,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 01:07:54,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 01:07:54,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 01:07:54,439 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:54,442 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 01:07:54,442 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:07:54,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:07:54 BasicIcfg [2021-11-07 01:07:54,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:07:54,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:07:54,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:07:54,447 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:07:54,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:48" (3/4) ... [2021-11-07 01:07:54,451 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:07:54,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-07 01:07:54,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-07 01:07:54,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-07 01:07:54,470 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-07 01:07:54,470 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 01:07:54,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:07:54,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:07:54,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:07:54,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:07:54,560 INFO L168 Benchmark]: Toolchain (without parser) took 6935.00 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 48.0 MB in the beginning and 76.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:54,561 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:54,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.14 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 69.1 MB in the end (delta: -21.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:54,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.60 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:54,562 INFO L168 Benchmark]: Boogie Preprocessor took 32.77 ms. Allocated memory is still 104.9 MB. Free memory was 67.0 MB in the beginning and 65.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:54,563 INFO L168 Benchmark]: RCFGBuilder took 506.13 ms. Allocated memory is still 104.9 MB. Free memory was 65.6 MB in the beginning and 53.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:54,563 INFO L168 Benchmark]: TraceAbstraction took 5465.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 53.1 MB in the beginning and 79.9 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:54,564 INFO L168 Benchmark]: Witness Printer took 104.31 ms. Allocated memory is still 125.8 MB. Free memory was 79.9 MB in the beginning and 76.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:54,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 749.14 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 69.1 MB in the end (delta: -21.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.60 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.77 ms. Allocated memory is still 104.9 MB. Free memory was 67.0 MB in the beginning and 65.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 506.13 ms. Allocated memory is still 104.9 MB. Free memory was 65.6 MB in the beginning and 53.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5465.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 53.1 MB in the beginning and 79.9 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 104.31 ms. Allocated memory is still 125.8 MB. Free memory was 79.9 MB in the beginning and 76.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 92 PlacesBefore, 32 PlacesAfterwards, 84 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 2829 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1662, positive: 1568, positive conditional: 0, positive unconditional: 1568, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 995, positive: 960, positive conditional: 0, positive unconditional: 960, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 995, positive: 952, positive conditional: 0, positive unconditional: 952, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1662, positive: 608, positive conditional: 0, positive unconditional: 608, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 995, unknown conditional: 0, unknown unconditional: 995] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 81, Positive conditional cache size: 0, Positive unconditional cache size: 81, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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 - PositiveResult [Line: 18]: 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 with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 119 SDslu, 162 SDs, 0 SdLazy, 68 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 132 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:07:54,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7393a68-d59c-4afd-888e-0f2b2e84fba2/bin/utaipan-UUZaoUuFF8/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 Writing output log to file Ultimate.log Result: TRUE