./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c08b2ab62201ccddd617a7142327e63096a4a5c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:43:51,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:43:51,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:43:51,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:43:51,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:43:51,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:43:51,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:43:51,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:43:51,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:43:51,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:43:51,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:43:51,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:43:51,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:43:51,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:43:51,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:43:51,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:43:51,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:43:51,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:43:51,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:43:51,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:43:51,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:43:51,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:43:51,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:43:51,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:43:51,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:43:51,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:43:51,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:43:51,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:43:51,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:43:51,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:43:51,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:43:51,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:43:51,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:43:51,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:43:51,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:43:51,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:43:51,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:43:51,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:43:51,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:43:51,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:43:51,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:43:51,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:43:51,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:43:51,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:43:51,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:43:51,262 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:43:51,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:43:51,262 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:43:51,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:43:51,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:43:51,263 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:43:51,263 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:43:51,270 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:43:51,271 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:43:51,271 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:43:51,271 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:43:51,271 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:43:51,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:43:51,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:43:51,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:43:51,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:43:51,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:43:51,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:43:51,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:43:51,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:43:51,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:43:51,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:43:51,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:43:51,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:43:51,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:43:51,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:43:51,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:43:51,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:43:51,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:43:51,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:43:51,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:43:51,279 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:43:51,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:43:51,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:43:51,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:43:51,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:43:51,280 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_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c08b2ab62201ccddd617a7142327e63096a4a5c [2021-10-16 02:43:51,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:43:51,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:43:51,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:43:51,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:43:51,626 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:43:51,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-16 02:43:51,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/data/b77f81e8a/d3e09934dc414ce8bbef0f5b43663e3c/FLAGa445ff110 [2021-10-16 02:43:52,274 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:43:52,274 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-16 02:43:52,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/data/b77f81e8a/d3e09934dc414ce8bbef0f5b43663e3c/FLAGa445ff110 [2021-10-16 02:43:52,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/data/b77f81e8a/d3e09934dc414ce8bbef0f5b43663e3c [2021-10-16 02:43:52,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:43:52,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:43:52,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:43:52,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:43:52,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:43:52,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da1756e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52, skipping insertion in model container [2021-10-16 02:43:52,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:43:52,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:43:52,849 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_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[2504,2517] [2021-10-16 02:43:52,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:43:52,862 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:43:52,886 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_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[2504,2517] [2021-10-16 02:43:52,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:43:52,901 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:43:52,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52 WrapperNode [2021-10-16 02:43:52,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:43:52,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:43:52,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:43:52,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:43:52,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:43:52,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:43:52,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:43:52,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:43:52,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:43:52,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:43:52,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:43:52,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:43:52,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (1/1) ... [2021-10-16 02:43:52,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:43:53,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:53,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:43:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:43:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 02:43:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 02:43:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 02:43:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 02:43:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:43:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:43:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:43:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:43:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:43:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:43:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:43:53,064 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 02:43:53,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:43:53,556 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 02:43:53,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:53 BoogieIcfgContainer [2021-10-16 02:43:53,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:43:53,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:43:53,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:43:53,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:43:53,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:43:52" (1/3) ... [2021-10-16 02:43:53,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35341a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:43:53, skipping insertion in model container [2021-10-16 02:43:53,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:52" (2/3) ... [2021-10-16 02:43:53,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35341a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:43:53, skipping insertion in model container [2021-10-16 02:43:53,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:53" (3/3) ... [2021-10-16 02:43:53,572 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2021-10-16 02:43:53,578 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 02:43:53,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:43:53,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:43:53,578 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 02:43:53,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,637 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,637 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,638 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,640 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,640 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,641 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,643 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,644 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,644 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,645 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,648 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,657 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,657 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,657 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,658 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,658 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,658 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,658 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,658 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,659 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,659 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,660 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,660 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,660 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,661 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,661 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,661 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,661 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,670 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,671 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,671 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,671 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,672 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,672 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,677 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,678 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,683 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,684 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,684 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,684 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:43:53,701 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-16 02:43:53,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:43:53,764 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:43:53,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:43:53,788 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 02:43:53,806 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 134 transitions, 284 flow [2021-10-16 02:43:53,809 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 134 transitions, 284 flow [2021-10-16 02:43:53,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 134 transitions, 284 flow [2021-10-16 02:43:53,877 INFO L129 PetriNetUnfolder]: 8/132 cut-off events. [2021-10-16 02:43:53,877 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-16 02:43:53,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 132 events. 8/132 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2021-10-16 02:43:53,888 INFO L116 LiptonReduction]: Number of co-enabled transitions 2408 [2021-10-16 02:43:58,149 INFO L131 LiptonReduction]: Checked pairs total: 8014 [2021-10-16 02:43:58,150 INFO L133 LiptonReduction]: Total number of compositions: 123 [2021-10-16 02:43:58,157 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 40 transitions, 96 flow [2021-10-16 02:43:58,188 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 338 states, 337 states have (on average 2.7270029673590503) internal successors, (919), 337 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 337 states have (on average 2.7270029673590503) internal successors, (919), 337 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:43:58,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:58,207 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:58,208 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:43:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash -164779958, now seen corresponding path program 1 times [2021-10-16 02:43:58,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:58,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207191529] [2021-10-16 02:43:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:58,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:58,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:58,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207191529] [2021-10-16 02:43:58,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207191529] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:58,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:58,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:43:58,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991020664] [2021-10-16 02:43:58,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:43:58,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:43:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:43:58,410 INFO L87 Difference]: Start difference. First operand has 338 states, 337 states have (on average 2.7270029673590503) internal successors, (919), 337 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2021-10-16 02:43:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:58,435 INFO L93 Difference]: Finished difference Result 338 states and 815 transitions. [2021-10-16 02:43:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:43:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) Word has length 19 [2021-10-16 02:43:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:58,452 INFO L225 Difference]: With dead ends: 338 [2021-10-16 02:43:58,456 INFO L226 Difference]: Without dead ends: 338 [2021-10-16 02:43:58,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:43:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-16 02:43:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2021-10-16 02:43:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.4183976261127595) internal successors, (815), 337 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 815 transitions. [2021-10-16 02:43:58,555 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 815 transitions. Word has length 19 [2021-10-16 02:43:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:58,557 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 815 transitions. [2021-10-16 02:43:58,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2021-10-16 02:43:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 815 transitions. [2021-10-16 02:43:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:43:58,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:58,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:58,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:43:58,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:43:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash 246001286, now seen corresponding path program 1 times [2021-10-16 02:43:58,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:58,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798788619] [2021-10-16 02:43:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:58,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:58,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:58,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798788619] [2021-10-16 02:43:58,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798788619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:58,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:58,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:43:58,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378022116] [2021-10-16 02:43:58,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:43:58,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:43:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:43:58,917 INFO L87 Difference]: Start difference. First operand 338 states and 815 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:59,024 INFO L93 Difference]: Finished difference Result 389 states and 894 transitions. [2021-10-16 02:43:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:43:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:43:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:59,031 INFO L225 Difference]: With dead ends: 389 [2021-10-16 02:43:59,031 INFO L226 Difference]: Without dead ends: 318 [2021-10-16 02:43:59,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:43:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-16 02:43:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 286. [2021-10-16 02:43:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.4175438596491228) internal successors, (689), 285 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 689 transitions. [2021-10-16 02:43:59,060 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 689 transitions. Word has length 26 [2021-10-16 02:43:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:59,061 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 689 transitions. [2021-10-16 02:43:59,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 689 transitions. [2021-10-16 02:43:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:43:59,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:59,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:59,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:43:59,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:43:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:59,065 INFO L82 PathProgramCache]: Analyzing trace with hash -983370554, now seen corresponding path program 2 times [2021-10-16 02:43:59,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:59,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51282363] [2021-10-16 02:43:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:59,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:59,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:59,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51282363] [2021-10-16 02:43:59,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51282363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:59,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:59,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:43:59,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079404276] [2021-10-16 02:43:59,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:43:59,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:43:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:59,192 INFO L87 Difference]: Start difference. First operand 286 states and 689 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:59,242 INFO L93 Difference]: Finished difference Result 368 states and 849 transitions. [2021-10-16 02:43:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:43:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:43:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:59,246 INFO L225 Difference]: With dead ends: 368 [2021-10-16 02:43:59,246 INFO L226 Difference]: Without dead ends: 368 [2021-10-16 02:43:59,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-16 02:43:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 266. [2021-10-16 02:43:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.332075471698113) internal successors, (618), 265 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 618 transitions. [2021-10-16 02:43:59,258 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 618 transitions. Word has length 26 [2021-10-16 02:43:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:59,258 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 618 transitions. [2021-10-16 02:43:59,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 618 transitions. [2021-10-16 02:43:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:43:59,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:59,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:59,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:43:59,261 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:43:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash 833679514, now seen corresponding path program 3 times [2021-10-16 02:43:59,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:59,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968709733] [2021-10-16 02:43:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:59,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:59,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:59,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968709733] [2021-10-16 02:43:59,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968709733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:59,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:59,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-16 02:43:59,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829093570] [2021-10-16 02:43:59,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:43:59,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:59,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:43:59,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:43:59,419 INFO L87 Difference]: Start difference. First operand 266 states and 618 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:59,568 INFO L93 Difference]: Finished difference Result 338 states and 754 transitions. [2021-10-16 02:43:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:43:59,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:43:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:59,573 INFO L225 Difference]: With dead ends: 338 [2021-10-16 02:43:59,573 INFO L226 Difference]: Without dead ends: 288 [2021-10-16 02:43:59,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:43:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-16 02:43:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 268. [2021-10-16 02:43:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.3258426966292136) internal successors, (621), 267 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 621 transitions. [2021-10-16 02:43:59,584 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 621 transitions. Word has length 26 [2021-10-16 02:43:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:59,585 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 621 transitions. [2021-10-16 02:43:59,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 621 transitions. [2021-10-16 02:43:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:43:59,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:59,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:59,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:43:59,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:43:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:59,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1726194874, now seen corresponding path program 4 times [2021-10-16 02:43:59,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:59,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656139019] [2021-10-16 02:43:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:59,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:59,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:59,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656139019] [2021-10-16 02:43:59,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656139019] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:59,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:59,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:43:59,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860438647] [2021-10-16 02:43:59,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:59,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:59,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:59,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:59,657 INFO L87 Difference]: Start difference. First operand 268 states and 621 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:59,667 INFO L93 Difference]: Finished difference Result 268 states and 613 transitions. [2021-10-16 02:43:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:59,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:43:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:59,671 INFO L225 Difference]: With dead ends: 268 [2021-10-16 02:43:59,671 INFO L226 Difference]: Without dead ends: 268 [2021-10-16 02:43:59,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-16 02:43:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-10-16 02:43:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.295880149812734) internal successors, (613), 267 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 613 transitions. [2021-10-16 02:43:59,682 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 613 transitions. Word has length 26 [2021-10-16 02:43:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:59,683 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 613 transitions. [2021-10-16 02:43:59,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 613 transitions. [2021-10-16 02:43:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:43:59,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:59,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:59,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:43:59,685 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:43:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1736998392, now seen corresponding path program 5 times [2021-10-16 02:43:59,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:59,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445119585] [2021-10-16 02:43:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:59,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:59,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:59,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445119585] [2021-10-16 02:43:59,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445119585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:59,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:59,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:43:59,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810992482] [2021-10-16 02:43:59,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:43:59,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:43:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:43:59,889 INFO L87 Difference]: Start difference. First operand 268 states and 613 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,067 INFO L93 Difference]: Finished difference Result 424 states and 951 transitions. [2021-10-16 02:44:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:44:00,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:44:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,071 INFO L225 Difference]: With dead ends: 424 [2021-10-16 02:44:00,071 INFO L226 Difference]: Without dead ends: 390 [2021-10-16 02:44:00,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:44:00,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-16 02:44:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 302. [2021-10-16 02:44:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.2857142857142856) internal successors, (688), 301 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 688 transitions. [2021-10-16 02:44:00,085 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 688 transitions. Word has length 26 [2021-10-16 02:44:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,085 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 688 transitions. [2021-10-16 02:44:00,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 688 transitions. [2021-10-16 02:44:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:44:00,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:00,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:00,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:44:00,088 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:44:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:00,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1720913956, now seen corresponding path program 6 times [2021-10-16 02:44:00,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:00,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428069372] [2021-10-16 02:44:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:00,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:00,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:00,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428069372] [2021-10-16 02:44:00,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428069372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:00,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:00,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:00,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057354990] [2021-10-16 02:44:00,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:00,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:00,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:00,136 INFO L87 Difference]: Start difference. First operand 302 states and 688 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,160 INFO L93 Difference]: Finished difference Result 324 states and 719 transitions. [2021-10-16 02:44:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:44:00,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:44:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,163 INFO L225 Difference]: With dead ends: 324 [2021-10-16 02:44:00,164 INFO L226 Difference]: Without dead ends: 294 [2021-10-16 02:44:00,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:44:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-16 02:44:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-10-16 02:44:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.2457337883959045) internal successors, (658), 293 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 658 transitions. [2021-10-16 02:44:00,194 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 658 transitions. Word has length 26 [2021-10-16 02:44:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,195 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 658 transitions. [2021-10-16 02:44:00,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 658 transitions. [2021-10-16 02:44:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:44:00,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:00,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:00,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:44:00,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:44:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:00,198 INFO L82 PathProgramCache]: Analyzing trace with hash 505408760, now seen corresponding path program 7 times [2021-10-16 02:44:00,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:00,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712105858] [2021-10-16 02:44:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:00,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:00,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:00,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712105858] [2021-10-16 02:44:00,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712105858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:00,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:00,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:44:00,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930034960] [2021-10-16 02:44:00,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:44:00,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:44:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:44:00,286 INFO L87 Difference]: Start difference. First operand 294 states and 658 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,354 INFO L93 Difference]: Finished difference Result 325 states and 705 transitions. [2021-10-16 02:44:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:44:00,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:44:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,357 INFO L225 Difference]: With dead ends: 325 [2021-10-16 02:44:00,357 INFO L226 Difference]: Without dead ends: 260 [2021-10-16 02:44:00,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:44:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-16 02:44:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 246. [2021-10-16 02:44:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.179591836734694) internal successors, (534), 245 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 534 transitions. [2021-10-16 02:44:00,366 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 534 transitions. Word has length 26 [2021-10-16 02:44:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,367 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 534 transitions. [2021-10-16 02:44:00,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 534 transitions. [2021-10-16 02:44:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:44:00,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:00,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:00,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:44:00,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:44:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash 875179192, now seen corresponding path program 1 times [2021-10-16 02:44:00,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:00,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336647913] [2021-10-16 02:44:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:00,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:00,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:00,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336647913] [2021-10-16 02:44:00,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336647913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:00,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:00,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:44:00,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742018222] [2021-10-16 02:44:00,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:44:00,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:44:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:44:00,493 INFO L87 Difference]: Start difference. First operand 246 states and 534 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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) [2021-10-16 02:44:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,628 INFO L93 Difference]: Finished difference Result 354 states and 730 transitions. [2021-10-16 02:44:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:44:00,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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) Word has length 28 [2021-10-16 02:44:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,630 INFO L225 Difference]: With dead ends: 354 [2021-10-16 02:44:00,631 INFO L226 Difference]: Without dead ends: 248 [2021-10-16 02:44:00,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:44:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-16 02:44:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 184. [2021-10-16 02:44:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.087431693989071) internal successors, (382), 183 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 382 transitions. [2021-10-16 02:44:00,640 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 382 transitions. Word has length 28 [2021-10-16 02:44:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,641 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 382 transitions. [2021-10-16 02:44:00,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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) [2021-10-16 02:44:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 382 transitions. [2021-10-16 02:44:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:44:00,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:00,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:00,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:44:00,643 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:44:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -820175700, now seen corresponding path program 2 times [2021-10-16 02:44:00,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:00,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501274669] [2021-10-16 02:44:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:00,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:00,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:00,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501274669] [2021-10-16 02:44:00,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501274669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:00,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:00,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:44:00,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825779380] [2021-10-16 02:44:00,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:00,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:00,732 INFO L87 Difference]: Start difference. First operand 184 states and 382 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-10-16 02:44:00,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,744 INFO L93 Difference]: Finished difference Result 136 states and 270 transitions. [2021-10-16 02:44:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:00,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) Word has length 28 [2021-10-16 02:44:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,745 INFO L225 Difference]: With dead ends: 136 [2021-10-16 02:44:00,746 INFO L226 Difference]: Without dead ends: 132 [2021-10-16 02:44:00,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-16 02:44:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-16 02:44:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.0076335877862594) internal successors, (263), 131 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 263 transitions. [2021-10-16 02:44:00,750 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 263 transitions. Word has length 28 [2021-10-16 02:44:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,751 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 263 transitions. [2021-10-16 02:44:00,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-10-16 02:44:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 263 transitions. [2021-10-16 02:44:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:44:00,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:00,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:00,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:44:00,752 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-16 02:44:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:00,752 INFO L82 PathProgramCache]: Analyzing trace with hash -658352387, now seen corresponding path program 1 times [2021-10-16 02:44:00,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:00,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464409960] [2021-10-16 02:44:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:00,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:00,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:00,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464409960] [2021-10-16 02:44:00,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464409960] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:00,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:00,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-16 02:44:00,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615475273] [2021-10-16 02:44:00,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:44:00,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:44:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:44:00,852 INFO L87 Difference]: Start difference. First operand 132 states and 263 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 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) [2021-10-16 02:44:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,958 INFO L93 Difference]: Finished difference Result 100 states and 201 transitions. [2021-10-16 02:44:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:44:00,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 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) Word has length 28 [2021-10-16 02:44:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,960 INFO L225 Difference]: With dead ends: 100 [2021-10-16 02:44:00,960 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:44:00,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:44:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:44:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:44:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:00,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:44:00,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-16 02:44:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,961 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:44:00,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 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) [2021-10-16 02:44:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:44:00,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:44:00,964 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:00,964 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 02:44:00,964 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 02:44:00,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:44:00,968 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 02:44:00,969 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:44:00,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:44:00 BasicIcfg [2021-10-16 02:44:00,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:44:00,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:44:00,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:44:00,972 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:44:00,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:53" (3/4) ... [2021-10-16 02:44:00,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:44:00,982 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-16 02:44:00,982 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-16 02:44:00,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-16 02:44:00,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:44:00,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:44:00,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:44:01,035 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:44:01,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:44:01,037 INFO L168 Benchmark]: Toolchain (without parser) took 8417.71 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 66.6 MB in the beginning and 48.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:01,037 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 82.8 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:01,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.36 ms. Allocated memory is still 107.0 MB. Free memory was 66.4 MB in the beginning and 80.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:01,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.93 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 78.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:01,038 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 77.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:01,039 INFO L168 Benchmark]: RCFGBuilder took 580.85 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 64.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:01,039 INFO L168 Benchmark]: TraceAbstraction took 7408.08 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 63.7 MB in the beginning and 51.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:01,039 INFO L168 Benchmark]: Witness Printer took 62.82 ms. Allocated memory is still 144.7 MB. Free memory was 51.2 MB in the beginning and 48.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:01,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 82.8 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.36 ms. Allocated memory is still 107.0 MB. Free memory was 66.4 MB in the beginning and 80.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.93 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 78.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 77.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 580.85 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 64.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7408.08 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 63.7 MB in the beginning and 51.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. * Witness Printer took 62.82 ms. Allocated memory is still 144.7 MB. Free memory was 51.2 MB in the beginning and 48.0 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: 4341.3ms, 133 PlacesBefore, 41 PlacesAfterwards, 134 TransitionsBefore, 40 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 123 TotalNumberOfCompositions, 8014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4219, positive: 3941, positive conditional: 0, positive unconditional: 3941, negative: 278, negative conditional: 0, negative unconditional: 278, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1961, positive: 1885, positive conditional: 0, positive unconditional: 1885, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1961, positive: 1854, positive conditional: 0, positive unconditional: 1854, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 107, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 181, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 145, negative conditional: 0, negative unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4219, positive: 2056, positive conditional: 0, positive unconditional: 2056, negative: 202, negative conditional: 0, negative unconditional: 202, unknown: 1961, unknown conditional: 0, unknown unconditional: 1961] , Statistics on independence cache: Total cache size (in pairs): 301, Positive cache size: 266, Positive conditional cache size: 0, Positive unconditional cache size: 266, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35 - 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: 94]: 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, 181 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7214.1ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 39.5ms, AutomataDifference: 959.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4423.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 519 SDtfs, 491 SDslu, 1203 SDs, 0 SdLazy, 661 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 395.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 417.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 210.2ms AutomataMinimizationTime, 11 MinimizatonAttempts, 320 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.6ms SsaConstructionTime, 402.3ms SatisfiabilityAnalysisTime, 888.1ms InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2021-10-16 02:44:01,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b2dba1-d7fc-4ca5-b5e1-0b11c8329b5d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...