./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 ............................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:40:30,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:40:30,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:40:30,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:40:30,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:40:30,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:40:30,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:40:30,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:40:30,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:40:30,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:40:30,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:40:30,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:40:30,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:40:30,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:40:30,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:40:30,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:40:30,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:40:30,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:40:30,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:40:30,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:40:30,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:40:30,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:40:30,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:40:30,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:40:30,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:40:30,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:40:30,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:40:30,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:40:30,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:40:30,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:40:30,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:40:30,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:40:30,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:40:30,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:40:30,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:40:30,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:40:30,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:40:30,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:40:30,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:40:30,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:40:30,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:40:30,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:40:30,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:40:30,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:40:30,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:40:30,354 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:40:30,354 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:40:30,354 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:40:30,355 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:40:30,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:40:30,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:40:30,355 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:40:30,356 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:40:30,357 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:40:30,357 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:40:30,357 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:40:30,357 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:40:30,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:40:30,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:40:30,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:40:30,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:40:30,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:40:30,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:40:30,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:40:30,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:40:30,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:40:30,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:40:30,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:40:30,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:40:30,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:40:30,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:40:30,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:40:30,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:30,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:40:30,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:40:30,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:40:30,364 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:40:30,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:40:30,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:40:30,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:40:30,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:40:30,365 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2021-10-24 09:40:30,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:40:30,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:40:30,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:40:30,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:40:30,682 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:40:30,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-24 09:40:30,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/data/d80b18ad4/6758719647a64a6aa7a23218694e0ac7/FLAGa3889ee00 [2021-10-24 09:40:31,211 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:40:31,212 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-24 09:40:31,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/data/d80b18ad4/6758719647a64a6aa7a23218694e0ac7/FLAGa3889ee00 [2021-10-24 09:40:31,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/data/d80b18ad4/6758719647a64a6aa7a23218694e0ac7 [2021-10-24 09:40:31,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:40:31,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:40:31,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:31,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:40:31,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:40:31,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db83f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31, skipping insertion in model container [2021-10-24 09:40:31,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:40:31,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:40:31,792 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_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-24 09:40:31,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:31,803 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:40:31,819 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_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-24 09:40:31,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:31,832 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:40:31,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31 WrapperNode [2021-10-24 09:40:31,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:31,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:31,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:40:31,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:40:31,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:31,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:40:31,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:40:31,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:40:31,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:40:31,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:40:31,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:40:31,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:40:31,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (1/1) ... [2021-10-24 09:40:31,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:31,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:40:31,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:40:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:40:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 09:40:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 09:40:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 09:40:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 09:40:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:40:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:40:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:40:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:40:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:40:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:40:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:40:31,980 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 09:40:32,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:40:32,332 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 09:40:32,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:32 BoogieIcfgContainer [2021-10-24 09:40:32,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:40:32,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:40:32,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:40:32,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:40:32,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:40:31" (1/3) ... [2021-10-24 09:40:32,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294f3858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:32, skipping insertion in model container [2021-10-24 09:40:32,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31" (2/3) ... [2021-10-24 09:40:32,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294f3858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:32, skipping insertion in model container [2021-10-24 09:40:32,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:32" (3/3) ... [2021-10-24 09:40:32,348 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2021-10-24 09:40:32,352 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 09:40:32,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:40:32,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:40:32,352 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 09:40:32,401 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,404 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,404 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,404 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,405 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,405 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,405 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,406 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,406 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,407 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,407 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,407 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,408 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,408 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,408 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,409 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,412 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,413 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,413 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,420 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,420 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,421 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,421 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,421 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,425 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,432 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:40:32,452 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-24 09:40:32,513 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:40:32,523 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:40:32,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 09:40:32,559 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 09:40:32,576 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 92 transitions, 200 flow [2021-10-24 09:40:32,582 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 92 transitions, 200 flow [2021-10-24 09:40:32,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 200 flow [2021-10-24 09:40:32,674 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2021-10-24 09:40:32,676 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-24 09:40:32,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 7/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-10-24 09:40:32,687 INFO L116 LiptonReduction]: Number of co-enabled transitions 728 [2021-10-24 09:40:35,895 INFO L131 LiptonReduction]: Checked pairs total: 732 [2021-10-24 09:40:35,896 INFO L133 LiptonReduction]: Total number of compositions: 96 [2021-10-24 09:40:35,905 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2021-10-24 09:40:35,917 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-24 09:40:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-24 09:40:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:40:35,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:40:35,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:40:35,924 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 09:40:35,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:40:35,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1477938906, now seen corresponding path program 1 times [2021-10-24 09:40:35,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:40:35,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249418175] [2021-10-24 09:40:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:35,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:40:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:40:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:36,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:40:36,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249418175] [2021-10-24 09:40:36,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249418175] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:40:36,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:40:36,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:40:36,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601005524] [2021-10-24 09:40:36,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:40:36,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:40:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:40:36,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:40:36,503 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:36,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:40:36,583 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-24 09:40:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:40:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:40:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:40:36,600 INFO L225 Difference]: With dead ends: 25 [2021-10-24 09:40:36,600 INFO L226 Difference]: Without dead ends: 14 [2021-10-24 09:40:36,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:40:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-24 09:40:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-24 09:40:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-10-24 09:40:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-24 09:40:36,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-24 09:40:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:40:36,628 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-24 09:40:36,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-24 09:40:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:40:36,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:40:36,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:40:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:40:36,630 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 09:40:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:40:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1059921218, now seen corresponding path program 2 times [2021-10-24 09:40:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:40:36,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613815741] [2021-10-24 09:40:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:36,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:40:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:40:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:36,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:40:36,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613815741] [2021-10-24 09:40:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613815741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:40:36,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:40:36,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:40:36,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579407475] [2021-10-24 09:40:36,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:40:36,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:40:36,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:40:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:40:36,891 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:40:36,960 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-24 09:40:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:40:36,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:40:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:40:36,961 INFO L225 Difference]: With dead ends: 13 [2021-10-24 09:40:36,961 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:40:36,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:40:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:40:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:40:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:40:36,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-24 09:40:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:40:36,963 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:40:36,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:40:36,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:40:36,965 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:40:36,966 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 09:40:36,966 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 09:40:36,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:40:36,972 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 09:40:36,973 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:40:36,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:40:36 BasicIcfg [2021-10-24 09:40:36,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:40:36,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:40:36,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:40:36,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:40:36,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:32" (3/4) ... [2021-10-24 09:40:36,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:40:36,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-24 09:40:36,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-24 09:40:36,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-24 09:40:36,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 09:40:36,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:40:36,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:40:37,028 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:40:37,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:40:37,030 INFO L168 Benchmark]: Toolchain (without parser) took 5448.29 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.0 MB in the beginning and 63.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:37,030 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory is still 87.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:37,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.48 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 87.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:37,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.94 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 85.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:37,032 INFO L168 Benchmark]: Boogie Preprocessor took 23.07 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:37,033 INFO L168 Benchmark]: RCFGBuilder took 447.56 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 72.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:37,033 INFO L168 Benchmark]: TraceAbstraction took 4634.24 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.9 MB in the beginning and 66.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:37,034 INFO L168 Benchmark]: Witness Printer took 52.71 ms. Allocated memory is still 136.3 MB. Free memory was 66.7 MB in the beginning and 63.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:37,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory is still 87.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.48 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 87.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.94 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 85.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.07 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 447.56 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 72.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4634.24 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.9 MB in the beginning and 66.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * Witness Printer took 52.71 ms. Allocated memory is still 136.3 MB. Free memory was 66.7 MB in the beginning and 63.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3314.1ms, 92 PlacesBefore, 21 PlacesAfterwards, 92 TransitionsBefore, 14 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 10 ConcurrentYvCompositions, 7 ChoiceCompositions, 96 TotalNumberOfCompositions, 732 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 732, positive: 732, positive conditional: 0, positive unconditional: 732, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 583, positive: 583, positive conditional: 0, positive unconditional: 583, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 583, positive: 583, positive conditional: 0, positive unconditional: 583, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 732, positive: 149, positive conditional: 0, positive unconditional: 149, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 583, unknown conditional: 0, unknown unconditional: 583] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4459.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.2ms, AutomataDifference: 186.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3392.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 15 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 215.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 109.2ms SatisfiabilityAnalysisTime, 592.4ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 09:40:37,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5cb1f2e-3457-4bc8-bd12-421e978e75fa/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...