./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/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 d7ed3fc81a6baa40baeec77c0043080ce5c04efa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:10:24,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:10:24,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:10:24,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:10:24,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:10:24,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:10:24,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:10:24,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:10:24,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:10:24,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:10:24,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:10:24,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:10:24,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:10:24,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:10:24,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:10:24,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:10:24,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:10:24,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:10:24,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:10:24,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:10:24,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:10:24,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:10:24,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:10:24,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:10:24,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:10:24,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:10:24,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:10:24,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:10:24,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:10:25,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:10:25,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:10:25,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:10:25,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:10:25,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:10:25,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:10:25,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:10:25,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:10:25,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:10:25,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:10:25,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:10:25,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:10:25,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:10:25,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:10:25,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:10:25,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:10:25,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:10:25,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:10:25,067 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:10:25,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:10:25,068 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:10:25,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:10:25,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:10:25,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:10:25,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:10:25,076 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:10:25,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:10:25,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:10:25,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:10:25,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:10:25,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:10:25,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:10:25,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:10:25,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:10:25,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:10:25,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:10:25,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:10:25,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:10:25,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:10:25,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:10:25,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:10:25,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:10:25,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:10:25,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:10:25,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:10:25,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:10:25,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:10:25,085 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:10:25,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:10:25,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:10:25,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:10:25,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:10:25,086 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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ed3fc81a6baa40baeec77c0043080ce5c04efa [2021-10-16 02:10:25,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:10:25,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:10:25,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:10:25,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:10:25,361 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:10:25,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2021-10-16 02:10:25,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/data/8cfaa69ca/bea6a07878cd4dd09f1582bb26786853/FLAGb29620ffc [2021-10-16 02:10:25,992 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:10:25,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/sv-benchmarks/c/pthread-atomic/szymanski.i [2021-10-16 02:10:26,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/data/8cfaa69ca/bea6a07878cd4dd09f1582bb26786853/FLAGb29620ffc [2021-10-16 02:10:26,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/data/8cfaa69ca/bea6a07878cd4dd09f1582bb26786853 [2021-10-16 02:10:26,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:10:26,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:10:26,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:10:26,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:10:26,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:10:26,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345ab484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26, skipping insertion in model container [2021-10-16 02:10:26,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:10:26,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:10:26,529 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-16 02:10:26,762 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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-10-16 02:10:26,770 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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-10-16 02:10:26,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:10:26,786 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:10:26,800 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-16 02:10:26,821 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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-10-16 02:10:26,825 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_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-10-16 02:10:26,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:10:26,867 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:10:26,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26 WrapperNode [2021-10-16 02:10:26,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:10:26,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:10:26,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:10:26,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:10:26,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:10:26,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:10:26,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:10:26,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:10:26,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:10:26,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:10:26,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:10:26,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:10:26,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (1/1) ... [2021-10-16 02:10:26,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:10:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:10:27,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:10:27,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:10:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:10:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-10-16 02:10:27,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-10-16 02:10:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-16 02:10:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-16 02:10:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:10:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 02:10:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:10:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:10:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:10:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 02:10:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:10:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:10:27,078 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 02:10:27,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:10:27,554 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:10:27,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:10:27 BoogieIcfgContainer [2021-10-16 02:10:27,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:10:27,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:10:27,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:10:27,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:10:27,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:10:26" (1/3) ... [2021-10-16 02:10:27,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58added9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:10:27, skipping insertion in model container [2021-10-16 02:10:27,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:10:26" (2/3) ... [2021-10-16 02:10:27,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58added9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:10:27, skipping insertion in model container [2021-10-16 02:10:27,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:10:27" (3/3) ... [2021-10-16 02:10:27,577 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-10-16 02:10:27,584 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 02:10:27,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:10:27,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:10:27,585 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 02:10:27,637 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,637 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,638 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,639 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,646 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,646 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,647 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,647 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,647 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,647 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,647 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,648 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,649 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,649 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,649 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,649 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,650 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,650 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,650 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,650 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,650 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,651 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,651 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,652 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,652 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,657 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,658 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,658 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,659 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,659 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,659 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,659 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,659 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,660 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,660 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:10:27,725 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-16 02:10:27,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:10:27,803 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 02:10:27,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:10:27,830 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 02:10:27,843 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 113 transitions, 242 flow [2021-10-16 02:10:27,846 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 113 transitions, 242 flow [2021-10-16 02:10:27,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 242 flow [2021-10-16 02:10:27,900 INFO L129 PetriNetUnfolder]: 20/111 cut-off events. [2021-10-16 02:10:27,900 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-16 02:10:27,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 20/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-10-16 02:10:27,911 INFO L116 LiptonReduction]: Number of co-enabled transitions 3672 [2021-10-16 02:10:31,135 INFO L131 LiptonReduction]: Checked pairs total: 9097 [2021-10-16 02:10:31,136 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-10-16 02:10:31,145 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 50 transitions, 116 flow [2021-10-16 02:10:31,202 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 456 states, 453 states have (on average 3.075055187637969) internal successors, (1393), 455 states have internal predecessors, (1393), 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 02:10:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 453 states have (on average 3.075055187637969) internal successors, (1393), 455 states have internal predecessors, (1393), 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 02:10:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:10:31,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:31,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:10:31,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-16 02:10:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2020190889, now seen corresponding path program 1 times [2021-10-16 02:10:31,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:10:31,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236313634] [2021-10-16 02:10:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:31,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:10:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:31,438 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 02:10:31,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:10:31,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236313634] [2021-10-16 02:10:31,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236313634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:31,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:31,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:10:31,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612754765] [2021-10-16 02:10:31,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:10:31,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:10:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:10:31,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:10:31,467 INFO L87 Difference]: Start difference. First operand has 456 states, 453 states have (on average 3.075055187637969) internal successors, (1393), 455 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:31,521 INFO L93 Difference]: Finished difference Result 460 states and 1324 transitions. [2021-10-16 02:10:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:10:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:10:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:31,541 INFO L225 Difference]: With dead ends: 460 [2021-10-16 02:10:31,541 INFO L226 Difference]: Without dead ends: 400 [2021-10-16 02:10:31,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:10:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-16 02:10:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 384. [2021-10-16 02:10:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 2.9157894736842107) internal successors, (1108), 383 states have internal predecessors, (1108), 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 02:10:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1108 transitions. [2021-10-16 02:10:31,626 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1108 transitions. Word has length 10 [2021-10-16 02:10:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:31,627 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1108 transitions. [2021-10-16 02:10:31,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1108 transitions. [2021-10-16 02:10:31,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:10:31,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:31,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:10:31,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:10:31,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-16 02:10:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:31,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1018981212, now seen corresponding path program 1 times [2021-10-16 02:10:31,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:10:31,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054830415] [2021-10-16 02:10:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:31,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:10:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:31,722 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 02:10:31,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:10:31,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054830415] [2021-10-16 02:10:31,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054830415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:31,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:31,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:10:31,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391938067] [2021-10-16 02:10:31,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:10:31,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:10:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:10:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:10:31,738 INFO L87 Difference]: Start difference. First operand 384 states and 1108 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:31,769 INFO L93 Difference]: Finished difference Result 370 states and 1056 transitions. [2021-10-16 02:10:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:10:31,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 02:10:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:31,783 INFO L225 Difference]: With dead ends: 370 [2021-10-16 02:10:31,786 INFO L226 Difference]: Without dead ends: 276 [2021-10-16 02:10:31,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:10:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-16 02:10:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-10-16 02:10:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 2.900735294117647) internal successors, (789), 275 states have internal predecessors, (789), 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 02:10:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 789 transitions. [2021-10-16 02:10:31,833 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 789 transitions. Word has length 12 [2021-10-16 02:10:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:31,833 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 789 transitions. [2021-10-16 02:10:31,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 789 transitions. [2021-10-16 02:10:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:10:31,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:31,843 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 02:10:31,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:10:31,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-16 02:10:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash -149090451, now seen corresponding path program 1 times [2021-10-16 02:10:31,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:10:31,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145505662] [2021-10-16 02:10:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:31,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:10:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:31,935 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 02:10:31,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:10:31,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145505662] [2021-10-16 02:10:31,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145505662] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:31,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:31,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:10:31,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611908487] [2021-10-16 02:10:31,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:10:31,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:10:31,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:10:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:10:31,938 INFO L87 Difference]: Start difference. First operand 276 states and 789 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:32,050 INFO L93 Difference]: Finished difference Result 418 states and 1148 transitions. [2021-10-16 02:10:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:10:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:32,061 INFO L225 Difference]: With dead ends: 418 [2021-10-16 02:10:32,061 INFO L226 Difference]: Without dead ends: 418 [2021-10-16 02:10:32,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:10:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-16 02:10:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 356. [2021-10-16 02:10:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 2.883522727272727) internal successors, (1015), 355 states have internal predecessors, (1015), 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 02:10:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1015 transitions. [2021-10-16 02:10:32,103 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1015 transitions. Word has length 19 [2021-10-16 02:10:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:32,104 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1015 transitions. [2021-10-16 02:10:32,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1015 transitions. [2021-10-16 02:10:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:10:32,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:32,114 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 02:10:32,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:10:32,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-16 02:10:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1217331885, now seen corresponding path program 2 times [2021-10-16 02:10:32,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:10:32,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562038032] [2021-10-16 02:10:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:32,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:10:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:32,204 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 02:10:32,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:10:32,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562038032] [2021-10-16 02:10:32,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562038032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:32,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:32,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:10:32,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103957400] [2021-10-16 02:10:32,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:10:32,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:10:32,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:10:32,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:10:32,212 INFO L87 Difference]: Start difference. First operand 356 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:32,306 INFO L93 Difference]: Finished difference Result 420 states and 1181 transitions. [2021-10-16 02:10:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:10:32,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:32,311 INFO L225 Difference]: With dead ends: 420 [2021-10-16 02:10:32,311 INFO L226 Difference]: Without dead ends: 318 [2021-10-16 02:10:32,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:10:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-16 02:10:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 272. [2021-10-16 02:10:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 2.708955223880597) internal successors, (726), 271 states have internal predecessors, (726), 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 02:10:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 726 transitions. [2021-10-16 02:10:32,339 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 726 transitions. Word has length 19 [2021-10-16 02:10:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:32,339 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 726 transitions. [2021-10-16 02:10:32,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 726 transitions. [2021-10-16 02:10:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:10:32,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:32,342 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 02:10:32,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:10:32,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-16 02:10:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash -269805487, now seen corresponding path program 3 times [2021-10-16 02:10:32,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:10:32,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050532274] [2021-10-16 02:10:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:32,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:10:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:32,389 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 02:10:32,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:10:32,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050532274] [2021-10-16 02:10:32,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050532274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:32,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:32,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:10:32,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824447377] [2021-10-16 02:10:32,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:10:32,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:10:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:10:32,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:10:32,392 INFO L87 Difference]: Start difference. First operand 272 states and 726 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 02:10:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:32,427 INFO L93 Difference]: Finished difference Result 306 states and 813 transitions. [2021-10-16 02:10:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:10:32,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 02:10:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:32,432 INFO L225 Difference]: With dead ends: 306 [2021-10-16 02:10:32,432 INFO L226 Difference]: Without dead ends: 306 [2021-10-16 02:10:32,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:10:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-10-16 02:10:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 270. [2021-10-16 02:10:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 266 states have (on average 2.68796992481203) internal successors, (715), 269 states have internal predecessors, (715), 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 02:10:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 715 transitions. [2021-10-16 02:10:32,448 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 715 transitions. Word has length 19 [2021-10-16 02:10:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:32,449 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 715 transitions. [2021-10-16 02:10:32,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 02:10:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 715 transitions. [2021-10-16 02:10:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:10:32,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:32,453 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 02:10:32,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:10:32,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-10-16 02:10:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash -769876591, now seen corresponding path program 4 times [2021-10-16 02:10:32,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:10:32,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846037509] [2021-10-16 02:10:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:32,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:10:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:32,528 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 02:10:32,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:10:32,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846037509] [2021-10-16 02:10:32,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846037509] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:32,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:32,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:10:32,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026337274] [2021-10-16 02:10:32,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:10:32,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:10:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:10:32,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:10:32,532 INFO L87 Difference]: Start difference. First operand 270 states and 715 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:32,588 INFO L93 Difference]: Finished difference Result 274 states and 739 transitions. [2021-10-16 02:10:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:10:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:32,589 INFO L225 Difference]: With dead ends: 274 [2021-10-16 02:10:32,589 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:10:32,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:10:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:10:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:10:32,590 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 02:10:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:10:32,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-16 02:10:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:32,591 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:10:32,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 02:10:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:10:32,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:10:32,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:32,595 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:32,596 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 02:10:32,596 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 02:10:32,596 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:32,596 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:32,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:10:32,603 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 02:10:32,603 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:10:32,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:10:32 BasicIcfg [2021-10-16 02:10:32,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:10:32,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:10:32,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:10:32,607 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:10:32,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:10:27" (3/4) ... [2021-10-16 02:10:32,610 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:10:32,617 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-10-16 02:10:32,617 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-10-16 02:10:32,622 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-16 02:10:32,622 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:10:32,622 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:10:32,622 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:10:32,659 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:10:32,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:10:32,662 INFO L168 Benchmark]: Toolchain (without parser) took 6395.26 ms. Allocated memory was 109.1 MB in the beginning and 161.5 MB in the end (delta: 52.4 MB). Free memory was 78.0 MB in the beginning and 105.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:32,663 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:32,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.83 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 95.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:32,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 132.1 MB. Free memory was 95.0 MB in the beginning and 93.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:32,665 INFO L168 Benchmark]: Boogie Preprocessor took 39.40 ms. Allocated memory is still 132.1 MB. Free memory was 93.0 MB in the beginning and 92.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:32,666 INFO L168 Benchmark]: RCFGBuilder took 604.47 ms. Allocated memory is still 132.1 MB. Free memory was 91.5 MB in the beginning and 78.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:32,667 INFO L168 Benchmark]: TraceAbstraction took 5044.90 ms. Allocated memory was 132.1 MB in the beginning and 161.5 MB in the end (delta: 29.4 MB). Free memory was 77.8 MB in the beginning and 108.9 MB in the end (delta: -31.1 MB). Peak memory consumption was 898.5 kB. Max. memory is 16.1 GB. [2021-10-16 02:10:32,668 INFO L168 Benchmark]: Witness Printer took 53.48 ms. Allocated memory is still 161.5 MB. Free memory was 108.9 MB in the beginning and 105.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:32,671 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 109.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 598.83 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 95.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 132.1 MB. Free memory was 95.0 MB in the beginning and 93.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.40 ms. Allocated memory is still 132.1 MB. Free memory was 93.0 MB in the beginning and 92.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 604.47 ms. Allocated memory is still 132.1 MB. Free memory was 91.5 MB in the beginning and 78.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5044.90 ms. Allocated memory was 132.1 MB in the beginning and 161.5 MB in the end (delta: 29.4 MB). Free memory was 77.8 MB in the beginning and 108.9 MB in the end (delta: -31.1 MB). Peak memory consumption was 898.5 kB. Max. memory is 16.1 GB. * Witness Printer took 53.48 ms. Allocated memory is still 161.5 MB. Free memory was 108.9 MB in the beginning and 105.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3290.2ms, 100 PlacesBefore, 45 PlacesAfterwards, 113 TransitionsBefore, 50 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 8 ChoiceCompositions, 82 TotalNumberOfCompositions, 9097 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4070, positive: 3814, positive conditional: 0, positive unconditional: 3814, negative: 256, negative conditional: 0, negative unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2406, positive: 2356, positive conditional: 0, positive unconditional: 2356, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2406, positive: 2350, positive conditional: 0, positive unconditional: 2350, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 123, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4070, positive: 1458, positive conditional: 0, positive unconditional: 1458, negative: 206, negative conditional: 0, negative unconditional: 206, unknown: 2406, unknown conditional: 0, unknown unconditional: 2406] , Statistics on independence cache: Total cache size (in pairs): 246, Positive cache size: 209, Positive conditional cache size: 0, Positive unconditional cache size: 209, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37 - 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: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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, 150 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4811.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 39.9ms, AutomataDifference: 483.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3399.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 344 SDtfs, 193 SDslu, 241 SDs, 0 SdLazy, 181 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 197.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 196.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 160 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.8ms SsaConstructionTime, 133.1ms SatisfiabilityAnalysisTime, 299.2ms InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 02:10:32,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfe1c32-2e48-4ee6-a42b-f08bfa2368ab/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...