./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG --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 2169680fce2765acf3f50381c3bbb015f4e594ea79c98b1b68cc3f63872068b2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-29 04:54:48,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:54:48,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:54:48,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:54:48,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:54:48,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:54:48,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:54:48,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:54:48,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:54:48,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:54:48,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:54:48,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:54:48,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:54:48,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:54:48,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:54:48,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:54:48,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:54:48,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:54:48,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:54:48,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:54:48,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:54:48,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:54:48,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:54:48,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:54:48,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:54:48,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:54:48,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:54:48,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:54:48,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:54:48,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:54:48,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:54:48,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:54:48,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:54:48,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:54:48,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:54:48,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:54:48,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:54:48,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:54:48,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:54:48,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:54:48,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:54:48,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:54:48,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:54:48,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:54:48,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:54:48,223 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:54:48,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:54:48,223 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:54:48,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:54:48,224 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:54:48,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:54:48,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:54:48,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:54:48,232 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:54:48,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:54:48,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:54:48,233 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:54:48,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:54:48,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:54:48,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:54:48,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:54:48,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:54:48,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:54:48,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:54:48,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:54:48,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:54:48,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:54:48,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:54:48,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:54:48,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:54:48,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:54:48,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:54:48,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:54:48,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:54:48,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:54:48,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:54:48,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:54:48,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:54:48,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:54:48,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:54:48,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:54:48,250 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_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2169680fce2765acf3f50381c3bbb015f4e594ea79c98b1b68cc3f63872068b2 [2021-10-29 04:54:48,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:54:48,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:54:48,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:54:48,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:54:48,589 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:54:48,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2021-10-29 04:54:48,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/data/6d8dbf855/523774c1ea6948f6ab050a824c5a167f/FLAG46dce224b [2021-10-29 04:54:49,148 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:54:49,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2021-10-29 04:54:49,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/data/6d8dbf855/523774c1ea6948f6ab050a824c5a167f/FLAG46dce224b [2021-10-29 04:54:49,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/data/6d8dbf855/523774c1ea6948f6ab050a824c5a167f [2021-10-29 04:54:49,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:54:49,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:54:49,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:54:49,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:54:49,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:54:49,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:49,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f07f1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49, skipping insertion in model container [2021-10-29 04:54:49,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:49,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:54:49,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:54:49,720 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_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[835,848] [2021-10-29 04:54:49,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:54:49,869 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:54:49,880 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_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[835,848] [2021-10-29 04:54:49,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:54:49,953 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:54:49,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49 WrapperNode [2021-10-29 04:54:49,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:54:49,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:54:49,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:54:49,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:54:49,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:54:50,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:54:50,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:54:50,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:54:50,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:54:50,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:54:50,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:54:50,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:54:50,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (1/1) ... [2021-10-29 04:54:50,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:54:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:54:50,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:54:50,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:54:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:54:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-29 04:54:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:54:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-10-29 04:54:50,160 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-10-29 04:54:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:54:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:54:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:54:50,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:54:50,163 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 04:54:50,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:54:50,413 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 04:54:50,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:50 BoogieIcfgContainer [2021-10-29 04:54:50,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:54:50,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:54:50,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:54:50,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:54:50,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:54:49" (1/3) ... [2021-10-29 04:54:50,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7788eff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:50, skipping insertion in model container [2021-10-29 04:54:50,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:49" (2/3) ... [2021-10-29 04:54:50,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7788eff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:50, skipping insertion in model container [2021-10-29 04:54:50,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:50" (3/3) ... [2021-10-29 04:54:50,435 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2021-10-29 04:54:50,440 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 04:54:50,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:54:50,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:54:50,440 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 04:54:50,505 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,505 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,505 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,506 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,506 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,506 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,506 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,507 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,507 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,507 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,508 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,508 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,508 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,508 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,509 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,509 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,510 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,510 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,510 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,510 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,514 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,514 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,514 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,514 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,515 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,515 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 04:54:50,534 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-29 04:54:50,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:54:50,587 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 [2021-10-29 04:54:50,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 04:54:50,601 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 04:54:50,612 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 121 flow [2021-10-29 04:54:50,615 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 121 flow [2021-10-29 04:54:50,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 121 flow [2021-10-29 04:54:50,684 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-10-29 04:54:50,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 04:54:50,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-10-29 04:54:50,690 INFO L116 LiptonReduction]: Number of co-enabled transitions 400 [2021-10-29 04:54:54,394 INFO L131 LiptonReduction]: Checked pairs total: 1025 [2021-10-29 04:54:54,394 INFO L133 LiptonReduction]: Total number of compositions: 54 [2021-10-29 04:54:54,402 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 13 transitions, 31 flow [2021-10-29 04:54:54,412 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 31 states have internal predecessors, (51), 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) [2021-10-29 04:54:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 31 states have internal predecessors, (51), 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) [2021-10-29 04:54:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:54:54,419 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:54,420 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:54:54,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-29 04:54:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2015810977, now seen corresponding path program 1 times [2021-10-29 04:54:54,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:54,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059892182] [2021-10-29 04:54:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:54,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:54,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:54,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059892182] [2021-10-29 04:54:54,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059892182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:54:54,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:54:54,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 04:54:54,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535311204] [2021-10-29 04:54:54,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:54:54,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:54:54,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:54:54,668 INFO L87 Difference]: Start difference. First operand has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 31 states have internal predecessors, (51), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:54,696 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2021-10-29 04:54:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:54:54,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:54:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:54,708 INFO L225 Difference]: With dead ends: 29 [2021-10-29 04:54:54,708 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 04:54:54,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:54:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 04:54:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-29 04:54:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 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) [2021-10-29 04:54:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2021-10-29 04:54:54,745 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 6 [2021-10-29 04:54:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:54,747 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2021-10-29 04:54:54,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2021-10-29 04:54:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:54:54,749 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:54,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:54:54,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:54:54,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-29 04:54:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash 791653806, now seen corresponding path program 1 times [2021-10-29 04:54:54,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:54,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341667887] [2021-10-29 04:54:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:54,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:54,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:54,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341667887] [2021-10-29 04:54:54,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341667887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:54:54,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:54:54,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:54:54,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989933501] [2021-10-29 04:54:54,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:54:54,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:54:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:54:54,930 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:54,960 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2021-10-29 04:54:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:54:54,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 04:54:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:54,961 INFO L225 Difference]: With dead ends: 24 [2021-10-29 04:54:54,961 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 04:54:54,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:54:54,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 04:54:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 04:54:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2021-10-29 04:54:54,966 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 9 [2021-10-29 04:54:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:54,966 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-10-29 04:54:54,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2021-10-29 04:54:54,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:54:54,967 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:54,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:54:54,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:54:54,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-29 04:54:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1315321389, now seen corresponding path program 1 times [2021-10-29 04:54:54,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:54,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500397942] [2021-10-29 04:54:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:54,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:55,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:55,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500397942] [2021-10-29 04:54:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500397942] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:54:55,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:54:55,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:54:55,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260187968] [2021-10-29 04:54:55,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:54:55,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:54:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:54:55,038 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:55,058 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-29 04:54:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:54:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:54:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:55,059 INFO L225 Difference]: With dead ends: 19 [2021-10-29 04:54:55,059 INFO L226 Difference]: Without dead ends: 18 [2021-10-29 04:54:55,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:54:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-29 04:54:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-29 04:54:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-10-29 04:54:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-29 04:54:55,062 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2021-10-29 04:54:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:55,063 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-29 04:54:55,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-29 04:54:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:54:55,063 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:55,064 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:54:55,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:54:55,064 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-29 04:54:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1463722833, now seen corresponding path program 2 times [2021-10-29 04:54:55,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:55,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59150826] [2021-10-29 04:54:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:55,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:55,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:55,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59150826] [2021-10-29 04:54:55,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59150826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:54:55,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:54:55,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:54:55,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829683266] [2021-10-29 04:54:55,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:54:55,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:54:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:54:55,158 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:55,177 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-29 04:54:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:54:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:54:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:55,179 INFO L225 Difference]: With dead ends: 12 [2021-10-29 04:54:55,179 INFO L226 Difference]: Without dead ends: 12 [2021-10-29 04:54:55,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:54:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-29 04:54:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-29 04:54:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-10-29 04:54:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-29 04:54:55,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-10-29 04:54:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:55,185 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-29 04:54:55,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-29 04:54:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:54:55,186 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:55,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:54:55,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:54:55,187 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-29 04:54:55,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1872306848, now seen corresponding path program 1 times [2021-10-29 04:54:55,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:55,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185770359] [2021-10-29 04:54:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:55,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:54:55,218 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:54:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:54:55,263 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:54:55,263 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:54:55,264 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:54:55,266 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 04:54:55,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:54:55,277 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-29 04:54:55,281 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 04:54:55,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:54:55,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:54:55 BasicIcfg [2021-10-29 04:54:55,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:54:55,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:54:55,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:54:55,353 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:54:55,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:50" (3/4) ... [2021-10-29 04:54:55,355 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:54:55,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:54:55,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:54:55,399 INFO L168 Benchmark]: Toolchain (without parser) took 5930.90 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 68.1 MB in the beginning and 113.8 MB in the end (delta: -45.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:54:55,400 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory is still 86.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:54:55,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.96 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 75.8 MB in the end (delta: -7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:55,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.73 ms. Allocated memory is still 107.0 MB. Free memory was 75.8 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:55,401 INFO L168 Benchmark]: Boogie Preprocessor took 46.34 ms. Allocated memory is still 107.0 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:54:55,402 INFO L168 Benchmark]: RCFGBuilder took 339.36 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 61.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:55,403 INFO L168 Benchmark]: TraceAbstraction took 4933.91 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 60.9 MB in the beginning and 116.9 MB in the end (delta: -56.1 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:55,403 INFO L168 Benchmark]: Witness Printer took 46.02 ms. Allocated memory is still 142.6 MB. Free memory was 116.9 MB in the beginning and 113.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:55,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory is still 86.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.96 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 75.8 MB in the end (delta: -7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.73 ms. Allocated memory is still 107.0 MB. Free memory was 75.8 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.34 ms. Allocated memory is still 107.0 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 339.36 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 61.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4933.91 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 60.9 MB in the beginning and 116.9 MB in the end (delta: -56.1 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. * Witness Printer took 46.02 ms. Allocated memory is still 142.6 MB. Free memory was 116.9 MB in the beginning and 113.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 61 PlacesBefore, 17 PlacesAfterwards, 58 TransitionsBefore, 13 TransitionsAfterwards, 400 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 1025 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 642, positive: 541, positive conditional: 0, positive unconditional: 541, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 342, positive: 316, positive conditional: 0, positive unconditional: 316, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 342, positive: 304, positive conditional: 0, positive unconditional: 304, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 642, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 342, unknown conditional: 0, unknown unconditional: 342] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L675] 0 int g = 0; [L676] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L677] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L687] 0 pthread_t id; [L688] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={7:0}, arg={0:0}, D={3:0}, g=0] [L681] 1 g = 17 VAL [A={7:0}, arg={0:0}, arg={0:0}, D={3:0}, g=17] [L684] 1 return ((void *)0); [L13] COND TRUE 0 !(cond) [L13] 0 reach_error() VAL [\result={0:0}, A={7:0}, arg={0:0}, arg={0:0}, D={3:0}, g=17] - UnprovableResult [Line: 688]: 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 3 procedures, 70 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 14 SDslu, 11 SDs, 0 SdLazy, 43 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-10-29 04:54:55,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c207ca9-70bf-4a59-aa0a-a3ce0d27a553/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...