./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8 --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 785828885bdc7a6e840f746d82abc399ce755172 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:36:02,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:36:02,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:36:02,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:36:02,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:36:02,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:36:02,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:36:02,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:36:02,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:36:02,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:36:02,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:36:02,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:36:02,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:36:02,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:36:02,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:36:02,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:36:02,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:36:02,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:36:02,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:36:02,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:36:02,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:36:02,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:36:02,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:36:02,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:36:02,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:36:02,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:36:02,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:36:02,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:36:02,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:36:02,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:36:02,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:36:02,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:36:02,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:36:02,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:36:02,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:36:02,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:36:02,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:36:02,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:36:02,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:36:02,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:36:02,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:36:02,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:36:02,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:36:02,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:36:02,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:36:02,332 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:36:02,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:36:02,333 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:36:02,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:36:02,333 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:36:02,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:36:02,341 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:36:02,342 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:36:02,343 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:36:02,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:36:02,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:36:02,344 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:36:02,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:36:02,345 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:36:02,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:36:02,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:36:02,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:36:02,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:36:02,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:36:02,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:36:02,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:36:02,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:36:02,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:36:02,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:36:02,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:36:02,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:36:02,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:36:02,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:02,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:36:02,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:36:02,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:36:02,352 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:36:02,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:36:02,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:36:02,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:36:02,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:36:02,354 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_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 785828885bdc7a6e840f746d82abc399ce755172 [2021-10-13 07:36:02,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:36:02,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:36:02,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:36:02,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:36:02,810 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:36:02,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/rfi000_power.opt.i [2021-10-13 07:36:02,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/data/903134bab/a281135298f24bc2b909497534d1fa4d/FLAGf9c3ff019 [2021-10-13 07:36:03,636 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:36:03,637 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/sv-benchmarks/c/pthread-wmm/rfi000_power.opt.i [2021-10-13 07:36:03,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/data/903134bab/a281135298f24bc2b909497534d1fa4d/FLAGf9c3ff019 [2021-10-13 07:36:03,875 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/data/903134bab/a281135298f24bc2b909497534d1fa4d [2021-10-13 07:36:03,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:36:03,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:36:03,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:03,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:36:03,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:36:03,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:03" (1/1) ... [2021-10-13 07:36:03,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1d869e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:03, skipping insertion in model container [2021-10-13 07:36:03,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:03" (1/1) ... [2021-10-13 07:36:03,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:36:03,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:36:04,257 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_c3f588a3-2711-404c-9328-1367f27fc7d2/sv-benchmarks/c/pthread-wmm/rfi000_power.opt.i[950,963] [2021-10-13 07:36:04,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:04,625 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:36:04,648 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_c3f588a3-2711-404c-9328-1367f27fc7d2/sv-benchmarks/c/pthread-wmm/rfi000_power.opt.i[950,963] [2021-10-13 07:36:04,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:04,805 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:36:04,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04 WrapperNode [2021-10-13 07:36:04,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:04,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:04,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:36:04,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:36:04,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:04,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:04,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:04,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:36:04,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:36:04,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:36:04,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:04,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:04,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:04,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:04,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:05,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:05,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:05,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:36:05,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:36:05,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:36:05,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:36:05,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (1/1) ... [2021-10-13 07:36:05,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:36:05,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:36:05,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:36:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:36:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:36:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:36:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:36:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:36:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:36:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:36:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:36:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:36:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:36:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:36:05,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:36:05,148 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:36:07,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:36:07,348 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:36:07,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:07 BoogieIcfgContainer [2021-10-13 07:36:07,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:36:07,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:36:07,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:36:07,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:36:07,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:03" (1/3) ... [2021-10-13 07:36:07,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef78c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:07, skipping insertion in model container [2021-10-13 07:36:07,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:04" (2/3) ... [2021-10-13 07:36:07,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef78c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:07, skipping insertion in model container [2021-10-13 07:36:07,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:07" (3/3) ... [2021-10-13 07:36:07,360 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt.i [2021-10-13 07:36:07,367 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:36:07,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:36:07,367 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:36:07,367 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:36:07,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,405 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,405 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,406 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,406 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,453 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,453 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,453 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,454 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,464 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,466 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:36:07,472 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:36:07,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:36:07,530 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:36:07,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 07:36:07,558 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:36:07,570 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 89 transitions, 188 flow [2021-10-13 07:36:07,574 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 89 transitions, 188 flow [2021-10-13 07:36:07,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 188 flow [2021-10-13 07:36:07,619 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-10-13 07:36:07,619 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:36:07,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-10-13 07:36:07,627 INFO L116 LiptonReduction]: Number of co-enabled transitions 1122 [2021-10-13 07:36:17,971 INFO L131 LiptonReduction]: Checked pairs total: 3053 [2021-10-13 07:36:17,972 INFO L133 LiptonReduction]: Total number of compositions: 77 [2021-10-13 07:36:17,980 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 23 transitions, 56 flow [2021-10-13 07:36:18,011 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 222 states, 219 states have (on average 2.6392694063926943) internal successors, (578), 221 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 219 states have (on average 2.6392694063926943) internal successors, (578), 221 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:36:18,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:18,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:36:18,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash 904281806, now seen corresponding path program 1 times [2021-10-13 07:36:18,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:18,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67707449] [2021-10-13 07:36:18,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:18,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:18,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:18,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67707449] [2021-10-13 07:36:18,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67707449] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:18,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:18,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:36:18,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768562647] [2021-10-13 07:36:18,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:18,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:18,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:18,426 INFO L87 Difference]: Start difference. First operand has 222 states, 219 states have (on average 2.6392694063926943) internal successors, (578), 221 states have internal predecessors, (578), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:18,497 INFO L93 Difference]: Finished difference Result 192 states and 459 transitions. [2021-10-13 07:36:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-13 07:36:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:18,514 INFO L225 Difference]: With dead ends: 192 [2021-10-13 07:36:18,514 INFO L226 Difference]: Without dead ends: 187 [2021-10-13 07:36:18,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-13 07:36:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-10-13 07:36:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.4193548387096775) internal successors, (450), 186 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 450 transitions. [2021-10-13 07:36:18,578 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 450 transitions. Word has length 5 [2021-10-13 07:36:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:18,579 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 450 transitions. [2021-10-13 07:36:18,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 450 transitions. [2021-10-13 07:36:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:36:18,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:18,581 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:18,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:36:18,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1426505968, now seen corresponding path program 1 times [2021-10-13 07:36:18,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:18,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325500371] [2021-10-13 07:36:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:18,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:18,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:18,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325500371] [2021-10-13 07:36:18,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325500371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:18,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:18,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:36:18,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982617177] [2021-10-13 07:36:18,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:18,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:18,798 INFO L87 Difference]: Start difference. First operand 187 states and 450 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:18,847 INFO L93 Difference]: Finished difference Result 192 states and 439 transitions. [2021-10-13 07:36:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:36:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:18,851 INFO L225 Difference]: With dead ends: 192 [2021-10-13 07:36:18,855 INFO L226 Difference]: Without dead ends: 157 [2021-10-13 07:36:18,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:18,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-13 07:36:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-10-13 07:36:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.3461538461538463) internal successors, (366), 156 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 366 transitions. [2021-10-13 07:36:18,893 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 366 transitions. Word has length 8 [2021-10-13 07:36:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:18,894 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 366 transitions. [2021-10-13 07:36:18,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 366 transitions. [2021-10-13 07:36:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:36:18,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:18,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:18,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:36:18,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:18,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1651084023, now seen corresponding path program 1 times [2021-10-13 07:36:18,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:18,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704927194] [2021-10-13 07:36:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:18,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:19,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:19,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704927194] [2021-10-13 07:36:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704927194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:19,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:19,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:36:19,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748953656] [2021-10-13 07:36:19,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:19,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:19,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:19,049 INFO L87 Difference]: Start difference. First operand 157 states and 366 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:19,073 INFO L93 Difference]: Finished difference Result 167 states and 374 transitions. [2021-10-13 07:36:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:36:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:19,076 INFO L225 Difference]: With dead ends: 167 [2021-10-13 07:36:19,076 INFO L226 Difference]: Without dead ends: 147 [2021-10-13 07:36:19,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-13 07:36:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-10-13 07:36:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.315068493150685) internal successors, (338), 146 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 338 transitions. [2021-10-13 07:36:19,089 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 338 transitions. Word has length 11 [2021-10-13 07:36:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:19,090 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 338 transitions. [2021-10-13 07:36:19,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 338 transitions. [2021-10-13 07:36:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:36:19,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:19,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:19,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:36:19,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:19,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:19,094 INFO L82 PathProgramCache]: Analyzing trace with hash 355988884, now seen corresponding path program 1 times [2021-10-13 07:36:19,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:19,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369014876] [2021-10-13 07:36:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:19,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:19,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:19,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369014876] [2021-10-13 07:36:19,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369014876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:19,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:19,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:19,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865905478] [2021-10-13 07:36:19,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:19,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:19,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:19,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:19,315 INFO L87 Difference]: Start difference. First operand 147 states and 338 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-10-13 07:36:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:19,353 INFO L93 Difference]: Finished difference Result 228 states and 509 transitions. [2021-10-13 07:36:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:19,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 [2021-10-13 07:36:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:19,356 INFO L225 Difference]: With dead ends: 228 [2021-10-13 07:36:19,356 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 07:36:19,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 07:36:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-13 07:36:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.240740740740741) internal successors, (242), 108 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 242 transitions. [2021-10-13 07:36:19,384 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 242 transitions. Word has length 12 [2021-10-13 07:36:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:19,384 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 242 transitions. [2021-10-13 07:36:19,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-10-13 07:36:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 242 transitions. [2021-10-13 07:36:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:36:19,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:19,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:19,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:36:19,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:19,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1849238336, now seen corresponding path program 1 times [2021-10-13 07:36:19,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:19,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587813475] [2021-10-13 07:36:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:19,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:19,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:19,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587813475] [2021-10-13 07:36:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587813475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:19,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:19,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:36:19,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121318536] [2021-10-13 07:36:19,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:36:19,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:36:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:36:19,678 INFO L87 Difference]: Start difference. First operand 109 states and 242 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 07:36:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:19,800 INFO L93 Difference]: Finished difference Result 119 states and 254 transitions. [2021-10-13 07:36:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:36:19,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2021-10-13 07:36:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:19,805 INFO L225 Difference]: With dead ends: 119 [2021-10-13 07:36:19,805 INFO L226 Difference]: Without dead ends: 107 [2021-10-13 07:36:19,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:36:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-13 07:36:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-10-13 07:36:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.2264150943396226) internal successors, (236), 106 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 236 transitions. [2021-10-13 07:36:19,833 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 236 transitions. Word has length 13 [2021-10-13 07:36:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:19,834 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 236 transitions. [2021-10-13 07:36:19,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 07:36:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 236 transitions. [2021-10-13 07:36:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:36:19,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:19,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:19,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:36:19,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:19,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1492460822, now seen corresponding path program 1 times [2021-10-13 07:36:19,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:19,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568452084] [2021-10-13 07:36:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:19,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:19,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:19,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568452084] [2021-10-13 07:36:19,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568452084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:19,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:19,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:19,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135940250] [2021-10-13 07:36:19,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:19,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:19,934 INFO L87 Difference]: Start difference. First operand 107 states and 236 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:19,961 INFO L93 Difference]: Finished difference Result 88 states and 162 transitions. [2021-10-13 07:36:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:19,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-13 07:36:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:19,963 INFO L225 Difference]: With dead ends: 88 [2021-10-13 07:36:19,963 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 07:36:19,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 07:36:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 07:36:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.7) internal successors, (102), 60 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 102 transitions. [2021-10-13 07:36:19,969 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 102 transitions. Word has length 14 [2021-10-13 07:36:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:19,969 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 102 transitions. [2021-10-13 07:36:19,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 102 transitions. [2021-10-13 07:36:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:36:19,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:19,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:19,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:36:19,972 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -697814332, now seen corresponding path program 1 times [2021-10-13 07:36:19,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:19,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525301054] [2021-10-13 07:36:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:19,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:20,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:20,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525301054] [2021-10-13 07:36:20,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525301054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:20,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:20,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:36:20,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858868552] [2021-10-13 07:36:20,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:36:20,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:36:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:20,094 INFO L87 Difference]: Start difference. First operand 61 states and 102 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) [2021-10-13 07:36:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:20,143 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2021-10-13 07:36:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:36:20,144 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 [2021-10-13 07:36:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:20,144 INFO L225 Difference]: With dead ends: 44 [2021-10-13 07:36:20,145 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 07:36:20,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:36:20,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 07:36:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-13 07:36:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2021-10-13 07:36:20,150 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 15 [2021-10-13 07:36:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:20,151 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2021-10-13 07:36:20,151 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) [2021-10-13 07:36:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-10-13 07:36:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:36:20,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:20,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:20,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:36:20,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:20,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2064001273, now seen corresponding path program 1 times [2021-10-13 07:36:20,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:20,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458620545] [2021-10-13 07:36:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:20,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:20,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:20,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458620545] [2021-10-13 07:36:20,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458620545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:20,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:20,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:36:20,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942691812] [2021-10-13 07:36:20,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:36:20,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:36:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:36:20,554 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2021-10-13 07:36:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:20,736 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2021-10-13 07:36:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:36:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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 [2021-10-13 07:36:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:20,737 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:36:20,737 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 07:36:20,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:36:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 07:36:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2021-10-13 07:36:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-13 07:36:20,740 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 18 [2021-10-13 07:36:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:20,741 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-13 07:36:20,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2021-10-13 07:36:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-13 07:36:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:36:20,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:20,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:20,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:36:20,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-13 07:36:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash 417049657, now seen corresponding path program 2 times [2021-10-13 07:36:20,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:20,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641991886] [2021-10-13 07:36:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:20,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:36:20,801 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:36:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:36:20,898 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:36:20,898 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:36:20,900 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:36:20,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:36:20,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:36:20,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:36:20,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:36:20,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:36:20,911 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:36:20,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:36:21,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:36:21 BasicIcfg [2021-10-13 07:36:21,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:36:21,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:36:21,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:36:21,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:36:21,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:07" (3/4) ... [2021-10-13 07:36:21,007 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:36:21,169 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:36:21,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:36:21,172 INFO L168 Benchmark]: Toolchain (without parser) took 17290.66 ms. Allocated memory was 94.4 MB in the beginning and 209.7 MB in the end (delta: 115.3 MB). Free memory was 57.2 MB in the beginning and 175.3 MB in the end (delta: -118.2 MB). Peak memory consumption was 108.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,173 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:36:21,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 922.65 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 56.9 MB in the beginning and 90.8 MB in the end (delta: -33.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.88 ms. Allocated memory is still 130.0 MB. Free memory was 90.8 MB in the beginning and 87.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,175 INFO L168 Benchmark]: Boogie Preprocessor took 98.24 ms. Allocated memory is still 130.0 MB. Free memory was 87.9 MB in the beginning and 85.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,175 INFO L168 Benchmark]: RCFGBuilder took 2318.81 ms. Allocated memory is still 130.0 MB. Free memory was 85.9 MB in the beginning and 51.1 MB in the end (delta: 34.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,177 INFO L168 Benchmark]: TraceAbstraction took 13650.71 ms. Allocated memory was 130.0 MB in the beginning and 209.7 MB in the end (delta: 79.7 MB). Free memory was 50.3 MB in the beginning and 71.9 MB in the end (delta: -21.6 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,179 INFO L168 Benchmark]: Witness Printer took 165.98 ms. Allocated memory is still 209.7 MB. Free memory was 71.9 MB in the beginning and 175.3 MB in the end (delta: -103.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:21,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 922.65 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 56.9 MB in the beginning and 90.8 MB in the end (delta: -33.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.88 ms. Allocated memory is still 130.0 MB. Free memory was 90.8 MB in the beginning and 87.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.24 ms. Allocated memory is still 130.0 MB. Free memory was 87.9 MB in the beginning and 85.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2318.81 ms. Allocated memory is still 130.0 MB. Free memory was 85.9 MB in the beginning and 51.1 MB in the end (delta: 34.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13650.71 ms. Allocated memory was 130.0 MB in the beginning and 209.7 MB in the end (delta: 79.7 MB). Free memory was 50.3 MB in the beginning and 71.9 MB in the end (delta: -21.6 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. * Witness Printer took 165.98 ms. Allocated memory is still 209.7 MB. Free memory was 71.9 MB in the beginning and 175.3 MB in the end (delta: -103.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10398.3ms, 94 PlacesBefore, 29 PlacesAfterwards, 89 TransitionsBefore, 23 TransitionsAfterwards, 1122 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 3053 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1561, positive: 1428, positive conditional: 0, positive unconditional: 1428, negative: 133, negative conditional: 0, negative unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 804, positive: 767, positive conditional: 0, positive unconditional: 767, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 804, positive: 747, positive conditional: 0, positive unconditional: 747, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 613, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 583, negative conditional: 0, negative unconditional: 583, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1561, positive: 661, positive conditional: 0, positive unconditional: 661, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 804, unknown conditional: 0, unknown unconditional: 804] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$read_delayed; [L726] 0 int *x$read_delayed_var; [L727] 0 int x$w_buff0; [L728] 0 _Bool x$w_buff0_used; [L729] 0 int x$w_buff1; [L730] 0 _Bool x$w_buff1_used; [L732] 0 int y = 0; [L733] 0 _Bool weak$$choice0; [L734] 0 _Bool weak$$choice2; [L800] 0 pthread_t t1587; [L801] FCALL, FORK 0 pthread_create(&t1587, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L802] 0 pthread_t t1588; [L803] FCALL, FORK 0 pthread_create(&t1588, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L758] 2 x$w_buff1 = x$w_buff0 [L759] 2 x$w_buff0 = 2 [L760] 2 x$w_buff1_used = x$w_buff0_used [L761] 2 x$w_buff0_used = (_Bool)1 [L18] COND FALSE 2 !(!expression) [L763] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L764] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L765] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L766] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L769] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L772] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L775] 2 __unbuffered_p1_EBX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L738] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L741] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L778] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L778] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L779] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L779] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L780] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L780] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L781] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L781] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L782] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L782] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L785] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L787] 2 return 0; [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L744] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L744] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L745] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L745] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L746] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L746] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L747] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L747] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L748] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L748] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L753] 1 return 0; [L805] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L809] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L809] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L809] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L809] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L810] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L810] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L811] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L811] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L812] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L812] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L813] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L813] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L816] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L817] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L818] 0 x$flush_delayed = weak$$choice2 [L819] 0 x$mem_tmp = x [L820] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L820] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L821] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L821] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L822] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L822] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L823] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L823] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L824] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L824] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L825] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L825] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L826] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L826] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L827] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 1) [L828] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L828] 0 x = x$flush_delayed ? x$mem_tmp : x [L829] 0 x$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 801]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 13386.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 22.1ms, AutomataDifference: 650.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10480.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 172 SDtfs, 154 SDslu, 278 SDs, 0 SdLazy, 139 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 284.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 286.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 158.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.3ms SsaConstructionTime, 586.7ms SatisfiabilityAnalysisTime, 1045.7ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:36:21,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f588a3-2711-404c-9328-1367f27fc7d2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...