./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/sync01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI --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 bfadf9642c1a15dc7e36a17b923c507de577ccb8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:44,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:44,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:45,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:45,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:45,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:45,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:45,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:45,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:45,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:45,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:45,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:45,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:45,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:45,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:45,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:45,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:45,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:45,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:45,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:45,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:45,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:45,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:45,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:45,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:45,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:45,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:45,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:45,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:45,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:45,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:45,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:45,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:45,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:45,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:45,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:45,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:45,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:45,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:45,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:45,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:45,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:45,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:45,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:45,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:45,148 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:45,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:45,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:45,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:45,149 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:45,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:45,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:45,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:45,157 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:45,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:45,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:45,158 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:45,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:45,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:45,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:45,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:45,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:45,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:45,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:45,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:45,161 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:45,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:45,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:45,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:45,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:45,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:45,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:45,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:45,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:45,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:45,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:45,163 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:45,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:45,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:45,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:45,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:45,164 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_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfadf9642c1a15dc7e36a17b923c507de577ccb8 [2021-10-11 02:27:45,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:45,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:45,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:45,556 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:45,557 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:45,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread/sync01.i [2021-10-11 02:27:45,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/data/02cca02a5/a9e89656712a4b96baf4f6edd89de719/FLAG0b75bee92 [2021-10-11 02:27:46,329 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:46,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/sv-benchmarks/c/pthread/sync01.i [2021-10-11 02:27:46,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/data/02cca02a5/a9e89656712a4b96baf4f6edd89de719/FLAG0b75bee92 [2021-10-11 02:27:46,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/data/02cca02a5/a9e89656712a4b96baf4f6edd89de719 [2021-10-11 02:27:46,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:46,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:46,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:46,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:46,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:46,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a2b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46, skipping insertion in model container [2021-10-11 02:27:46,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:46,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:47,185 WARN L226 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_2532417e-1481-40a0-813c-28e01cd4c9c7/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2021-10-11 02:27:47,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:47,203 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:47,267 WARN L226 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_2532417e-1481-40a0-813c-28e01cd4c9c7/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2021-10-11 02:27:47,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:47,416 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:47,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47 WrapperNode [2021-10-11 02:27:47,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:47,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:47,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:47,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:47,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:47,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:47,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:47,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:47,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:47,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:47,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:47,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:47,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:27:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-11 02:27:47,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-11 02:27:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-11 02:27:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-11 02:27:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-11 02:27:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:47,666 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:27:48,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:48,172 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:27:48,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:48 BoogieIcfgContainer [2021-10-11 02:27:48,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:48,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:48,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:48,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:48,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:46" (1/3) ... [2021-10-11 02:27:48,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c513918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:48, skipping insertion in model container [2021-10-11 02:27:48,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47" (2/3) ... [2021-10-11 02:27:48,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c513918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:48, skipping insertion in model container [2021-10-11 02:27:48,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:48" (3/3) ... [2021-10-11 02:27:48,183 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2021-10-11 02:27:48,198 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:27:48,198 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:48,202 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:48,203 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:27:48,232 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,232 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,232 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,232 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,233 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,233 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,233 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,234 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,234 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,234 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,234 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,239 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,240 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,240 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,240 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,240 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,240 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,241 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,241 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,241 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,241 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,242 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,242 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,242 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,243 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,243 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,243 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,243 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,245 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,245 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,247 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,247 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,254 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,256 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,256 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:48,267 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-11 02:27:48,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:27:48,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:48,297 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:48,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:48,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:48,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:48,298 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:48,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:48,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:48,311 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:27:48,313 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions, 214 flow [2021-10-11 02:27:48,316 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 96 transitions, 214 flow [2021-10-11 02:27:48,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-10-11 02:27:48,367 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-10-11 02:27:48,367 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-11 02:27:48,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2021-10-11 02:27:48,374 INFO L116 LiptonReduction]: Number of co-enabled transitions 840 [2021-10-11 02:27:51,885 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-10-11 02:27:52,579 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-10-11 02:27:52,715 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-10-11 02:27:52,828 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-10-11 02:27:53,112 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:27:53,375 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-10-11 02:27:53,611 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-10-11 02:27:53,827 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-10-11 02:27:54,879 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 181 DAG size of output: 171 [2021-10-11 02:27:55,307 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-10-11 02:27:56,267 WARN L197 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 171 [2021-10-11 02:27:56,685 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-10-11 02:27:56,692 INFO L131 LiptonReduction]: Checked pairs total: 3852 [2021-10-11 02:27:56,692 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-10-11 02:27:56,698 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 34 transitions, 90 flow [2021-10-11 02:27:56,713 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2021-10-11 02:27:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2021-10-11 02:27:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:56,724 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:56,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash -308904977, now seen corresponding path program 1 times [2021-10-11 02:27:56,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:56,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571186961] [2021-10-11 02:27:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571186961] [2021-10-11 02:27:56,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:56,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:56,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986384251] [2021-10-11 02:27:56,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:56,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:56,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:56,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:56,938 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2021-10-11 02:27:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,960 INFO L93 Difference]: Finished difference Result 198 states and 455 transitions. [2021-10-11 02:27:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:56,961 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2021-10-11 02:27:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,973 INFO L225 Difference]: With dead ends: 198 [2021-10-11 02:27:56,974 INFO L226 Difference]: Without dead ends: 197 [2021-10-11 02:27:56,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-11 02:27:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-10-11 02:27:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2021-10-11 02:27:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 454 transitions. [2021-10-11 02:27:57,025 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 454 transitions. Word has length 15 [2021-10-11 02:27:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,026 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 454 transitions. [2021-10-11 02:27:57,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 454 transitions. [2021-10-11 02:27:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:27:57,029 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:57,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,031 INFO L82 PathProgramCache]: Analyzing trace with hash 206914780, now seen corresponding path program 1 times [2021-10-11 02:27:57,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:57,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641835560] [2021-10-11 02:27:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641835560] [2021-10-11 02:27:57,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:57,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19586800] [2021-10-11 02:27:57,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:57,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:57,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:57,173 INFO L87 Difference]: Start difference. First operand 197 states and 454 transitions. Second operand 3 states. [2021-10-11 02:27:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,215 INFO L93 Difference]: Finished difference Result 107 states and 223 transitions. [2021-10-11 02:27:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:57,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:27:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,217 INFO L225 Difference]: With dead ends: 107 [2021-10-11 02:27:57,218 INFO L226 Difference]: Without dead ends: 107 [2021-10-11 02:27:57,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-11 02:27:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-10-11 02:27:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-10-11 02:27:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 223 transitions. [2021-10-11 02:27:57,230 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 223 transitions. Word has length 21 [2021-10-11 02:27:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,230 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 223 transitions. [2021-10-11 02:27:57,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 223 transitions. [2021-10-11 02:27:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:27:57,232 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:57,233 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,234 INFO L82 PathProgramCache]: Analyzing trace with hash 657978938, now seen corresponding path program 2 times [2021-10-11 02:27:57,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:57,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270958701] [2021-10-11 02:27:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270958701] [2021-10-11 02:27:57,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:57,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250128860] [2021-10-11 02:27:57,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:57,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:57,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:57,330 INFO L87 Difference]: Start difference. First operand 107 states and 223 transitions. Second operand 3 states. [2021-10-11 02:27:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,364 INFO L93 Difference]: Finished difference Result 80 states and 137 transitions. [2021-10-11 02:27:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:57,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:27:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,366 INFO L225 Difference]: With dead ends: 80 [2021-10-11 02:27:57,366 INFO L226 Difference]: Without dead ends: 80 [2021-10-11 02:27:57,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-11 02:27:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-11 02:27:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-10-11 02:27:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 137 transitions. [2021-10-11 02:27:57,382 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 137 transitions. Word has length 21 [2021-10-11 02:27:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,383 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 137 transitions. [2021-10-11 02:27:57,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 137 transitions. [2021-10-11 02:27:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:27:57,384 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:57,385 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,386 INFO L82 PathProgramCache]: Analyzing trace with hash -688315250, now seen corresponding path program 1 times [2021-10-11 02:27:57,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:57,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140304745] [2021-10-11 02:27:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140304745] [2021-10-11 02:27:57,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:27:57,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195366659] [2021-10-11 02:27:57,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:57,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:57,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:57,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:57,502 INFO L87 Difference]: Start difference. First operand 80 states and 137 transitions. Second operand 7 states. [2021-10-11 02:27:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,634 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2021-10-11 02:27:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:57,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 02:27:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,636 INFO L225 Difference]: With dead ends: 80 [2021-10-11 02:27:57,636 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 02:27:57,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 02:27:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-11 02:27:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 02:27:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2021-10-11 02:27:57,645 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 21 [2021-10-11 02:27:57,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,646 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2021-10-11 02:27:57,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2021-10-11 02:27:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:27:57,648 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:57,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1906534828, now seen corresponding path program 3 times [2021-10-11 02:27:57,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:57,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090256642] [2021-10-11 02:27:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090256642] [2021-10-11 02:27:57,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:27:57,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756615163] [2021-10-11 02:27:57,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:57,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:57,777 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 7 states. [2021-10-11 02:27:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,838 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2021-10-11 02:27:57,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:57,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 02:27:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,840 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:27:57,840 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:57,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:57,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-11 02:27:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,841 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:57,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:57,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:57,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:57,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:57 BasicIcfg [2021-10-11 02:27:57,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:57,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:57,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:57,846 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:57,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:48" (3/4) ... [2021-10-11 02:27:57,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:57,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-11 02:27:57,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-11 02:27:57,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:27:57,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:57,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:57,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:57,901 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2532417e-1481-40a0-813c-28e01cd4c9c7/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:57,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:57,902 INFO L168 Benchmark]: Toolchain (without parser) took 11351.49 ms. Allocated memory was 125.8 MB in the beginning and 226.5 MB in the end (delta: 100.7 MB). Free memory was 88.8 MB in the beginning and 73.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,903 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 31.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:57,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 865.02 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 55.7 MB in the end (delta: 32.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.58 ms. Allocated memory is still 125.8 MB. Free memory was 55.7 MB in the beginning and 53.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,904 INFO L168 Benchmark]: Boogie Preprocessor took 64.24 ms. Allocated memory is still 125.8 MB. Free memory was 53.5 MB in the beginning and 52.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,925 INFO L168 Benchmark]: RCFGBuilder took 609.55 ms. Allocated memory is still 125.8 MB. Free memory was 52.0 MB in the beginning and 82.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,925 INFO L168 Benchmark]: TraceAbstraction took 9669.58 ms. Allocated memory was 125.8 MB in the beginning and 226.5 MB in the end (delta: 100.7 MB). Free memory was 82.0 MB in the beginning and 75.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 107.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,926 INFO L168 Benchmark]: Witness Printer took 55.61 ms. Allocated memory is still 226.5 MB. Free memory was 75.4 MB in the beginning and 73.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 31.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 865.02 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 55.7 MB in the end (delta: 32.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.58 ms. Allocated memory is still 125.8 MB. Free memory was 55.7 MB in the beginning and 53.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.24 ms. Allocated memory is still 125.8 MB. Free memory was 53.5 MB in the beginning and 52.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 609.55 ms. Allocated memory is still 125.8 MB. Free memory was 52.0 MB in the beginning and 82.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9669.58 ms. Allocated memory was 125.8 MB in the beginning and 226.5 MB in the end (delta: 100.7 MB). Free memory was 82.0 MB in the beginning and 75.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 107.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.61 ms. Allocated memory is still 226.5 MB. Free memory was 75.4 MB in the beginning and 73.3 MB in the end (delta: 2.1 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 590 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 21 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 166 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 8.3s, 96 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 34 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 73 TotalNumberOfCompositions, 3852 MoverChecksTotal - PositiveResult [Line: 966]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.4s, HoareTripleCheckerStatistics: 132 SDtfs, 97 SDslu, 131 SDs, 0 SdLazy, 97 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...