./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI --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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:02:54,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:02:54,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:02:54,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:02:54,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:02:54,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:02:54,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:02:54,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:02:54,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:02:54,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:02:54,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:02:54,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:02:54,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:02:54,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:02:54,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:02:54,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:02:54,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:02:54,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:02:54,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:02:54,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:02:54,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:02:54,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:02:54,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:02:54,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:02:54,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:02:54,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:02:54,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:02:54,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:02:54,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:02:54,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:02:54,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:02:54,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:02:54,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:02:54,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:02:54,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:02:54,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:02:54,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:02:54,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:02:54,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:02:54,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:02:54,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:02:54,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:02:54,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:02:54,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:02:54,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:02:54,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:02:54,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:02:54,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:02:54,433 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:02:54,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:02:54,434 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:02:54,434 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:02:54,435 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:02:54,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:02:54,436 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:02:54,437 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:02:54,437 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:02:54,437 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:02:54,438 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:02:54,438 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:02:54,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:02:54,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:02:54,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:02:54,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:02:54,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:02:54,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:02:54,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:02:54,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:02:54,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:02:54,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:02:54,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:02:54,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:02:54,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:02:54,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:02:54,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:54,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:02:54,447 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:02:54,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:02:54,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:02:54,448 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:02:54,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:02:54,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:02:54,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:02:54,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2022-11-03 02:02:54,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:02:54,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:02:54,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:02:54,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:02:54,960 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:02:54,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2022-11-03 02:02:55,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/data/831494ee5/a1d68b8673ac46dcbd5fc383549aeedc/FLAG27e5a769e [2022-11-03 02:02:55,737 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:02:55,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/sv-benchmarks/c/pthread-atomic/szymanski.i [2022-11-03 02:02:55,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/data/831494ee5/a1d68b8673ac46dcbd5fc383549aeedc/FLAG27e5a769e [2022-11-03 02:02:55,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/data/831494ee5/a1d68b8673ac46dcbd5fc383549aeedc [2022-11-03 02:02:55,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:02:55,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:02:55,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:55,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:02:55,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:02:55,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:55" (1/1) ... [2022-11-03 02:02:55,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f99523c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:55, skipping insertion in model container [2022-11-03 02:02:55,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:55" (1/1) ... [2022-11-03 02:02:56,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:02:56,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:02:56,443 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-03 02:02:56,708 WARN L230 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_31c0dae3-6313-49ce-83ac-d41753eb5932/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-11-03 02:02:56,724 WARN L230 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_31c0dae3-6313-49ce-83ac-d41753eb5932/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-11-03 02:02:56,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:56,753 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:02:56,790 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-03 02:02:56,823 WARN L230 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_31c0dae3-6313-49ce-83ac-d41753eb5932/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-11-03 02:02:56,835 WARN L230 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_31c0dae3-6313-49ce-83ac-d41753eb5932/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-11-03 02:02:56,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:56,890 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:02:56,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56 WrapperNode [2022-11-03 02:02:56,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:56,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:56,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:02:56,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:02:56,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,958 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-03 02:02:56,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:56,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:02:56,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:02:56,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:02:56,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,993 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:56,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:02:56,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:02:56,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:02:57,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:02:57,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (1/1) ... [2022-11-03 02:02:57,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:57,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:02:57,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:02:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:02:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-03 02:02:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-03 02:02:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-03 02:02:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-03 02:02:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:02:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 02:02:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:02:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:02:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:02:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:02:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 02:02:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:02:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:02:57,120 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:02:57,309 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:02:57,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:02:57,602 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:02:57,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:02:57,611 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 02:02:57,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:57 BoogieIcfgContainer [2022-11-03 02:02:57,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:02:57,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:02:57,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:02:57,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:02:57,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:55" (1/3) ... [2022-11-03 02:02:57,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:57, skipping insertion in model container [2022-11-03 02:02:57,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:56" (2/3) ... [2022-11-03 02:02:57,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:57, skipping insertion in model container [2022-11-03 02:02:57,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:57" (3/3) ... [2022-11-03 02:02:57,626 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-11-03 02:02:57,637 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:02:57,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:02:57,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:02:57,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:02:57,852 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 02:02:57,912 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:02:57,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 117 transitions, 250 flow [2022-11-03 02:02:57,935 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 117 transitions, 250 flow [2022-11-03 02:02:57,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 117 transitions, 250 flow [2022-11-03 02:02:58,024 INFO L130 PetriNetUnfolder]: 20/115 cut-off events. [2022-11-03 02:02:58,025 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 02:02:58,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 20/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-11-03 02:02:58,042 INFO L118 LiptonReduction]: Number of co-enabled transitions 3672 [2022-11-03 02:03:01,289 INFO L133 LiptonReduction]: Checked pairs total: 9532 [2022-11-03 02:03:01,290 INFO L135 LiptonReduction]: Total number of compositions: 86 [2022-11-03 02:03:01,304 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 51 transitions, 118 flow [2022-11-03 02:03:01,388 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 488 states, 485 states have (on average 3.0556701030927833) internal successors, (1482), 487 states have internal predecessors, (1482), 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) [2022-11-03 02:03:01,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:03:01,419 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7dce5bf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:03:01,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-03 02:03:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 488 states, 485 states have (on average 3.0556701030927833) internal successors, (1482), 487 states have internal predecessors, (1482), 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) [2022-11-03 02:03:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:03:01,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:01,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:01,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-03 02:03:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1263330361, now seen corresponding path program 1 times [2022-11-03 02:03:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509458512] [2022-11-03 02:03:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:01,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509458512] [2022-11-03 02:03:01,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509458512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:01,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:01,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:03:01,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715532541] [2022-11-03 02:03:01,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:01,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:01,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:01,788 INFO L87 Difference]: Start difference. First operand has 488 states, 485 states have (on average 3.0556701030927833) internal successors, (1482), 487 states have internal predecessors, (1482), 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) [2022-11-03 02:03:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:01,973 INFO L93 Difference]: Finished difference Result 492 states and 1411 transitions. [2022-11-03 02:03:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:01,977 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 [2022-11-03 02:03:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:02,010 INFO L225 Difference]: With dead ends: 492 [2022-11-03 02:03:02,010 INFO L226 Difference]: Without dead ends: 426 [2022-11-03 02:03:02,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:02,016 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:02,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 20 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:02,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-03 02:03:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 410. [2022-11-03 02:03:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 406 states have (on average 2.9014778325123154) internal successors, (1178), 409 states have internal predecessors, (1178), 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) [2022-11-03 02:03:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1178 transitions. [2022-11-03 02:03:02,122 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1178 transitions. Word has length 10 [2022-11-03 02:03:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:02,123 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 1178 transitions. [2022-11-03 02:03:02,123 INFO L496 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) [2022-11-03 02:03:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1178 transitions. [2022-11-03 02:03:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:03:02,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:02,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:02,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:03:02,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-03 02:03:02,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:02,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1525689451, now seen corresponding path program 1 times [2022-11-03 02:03:02,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:02,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321432230] [2022-11-03 02:03:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:02,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:02,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:02,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321432230] [2022-11-03 02:03:02,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321432230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:02,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:02,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:03:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644992732] [2022-11-03 02:03:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:02,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:02,241 INFO L87 Difference]: Start difference. First operand 410 states and 1178 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) [2022-11-03 02:03:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:02,344 INFO L93 Difference]: Finished difference Result 394 states and 1121 transitions. [2022-11-03 02:03:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:02,345 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 [2022-11-03 02:03:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:02,348 INFO L225 Difference]: With dead ends: 394 [2022-11-03 02:03:02,350 INFO L226 Difference]: Without dead ends: 300 [2022-11-03 02:03:02,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:02,352 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:02,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-03 02:03:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-11-03 02:03:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 2.885135135135135) internal successors, (854), 299 states have internal predecessors, (854), 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) [2022-11-03 02:03:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 854 transitions. [2022-11-03 02:03:02,379 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 854 transitions. Word has length 12 [2022-11-03 02:03:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:02,379 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 854 transitions. [2022-11-03 02:03:02,380 INFO L496 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) [2022-11-03 02:03:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 854 transitions. [2022-11-03 02:03:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:03:02,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:02,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:03:02,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-03 02:03:02,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1362098270, now seen corresponding path program 1 times [2022-11-03 02:03:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:02,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558468985] [2022-11-03 02:03:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:02,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558468985] [2022-11-03 02:03:02,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558468985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:02,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:02,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:02,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663477302] [2022-11-03 02:03:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:02,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:02,586 INFO L87 Difference]: Start difference. First operand 300 states and 854 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) [2022-11-03 02:03:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:02,760 INFO L93 Difference]: Finished difference Result 346 states and 971 transitions. [2022-11-03 02:03:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:02,761 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 [2022-11-03 02:03:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:02,764 INFO L225 Difference]: With dead ends: 346 [2022-11-03 02:03:02,764 INFO L226 Difference]: Without dead ends: 256 [2022-11-03 02:03:02,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:02,766 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:02,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 37 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:03:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-03 02:03:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 240. [2022-11-03 02:03:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 2.707627118644068) internal successors, (639), 239 states have internal predecessors, (639), 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) [2022-11-03 02:03:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 639 transitions. [2022-11-03 02:03:02,782 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 639 transitions. Word has length 19 [2022-11-03 02:03:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 639 transitions. [2022-11-03 02:03:02,783 INFO L496 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) [2022-11-03 02:03:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 639 transitions. [2022-11-03 02:03:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:03:02,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:02,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:02,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:03:02,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-03 02:03:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 695235556, now seen corresponding path program 2 times [2022-11-03 02:03:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:02,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118124340] [2022-11-03 02:03:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:02,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118124340] [2022-11-03 02:03:02,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118124340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:02,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:02,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481753547] [2022-11-03 02:03:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:02,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:02,875 INFO L87 Difference]: Start difference. First operand 240 states and 639 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) [2022-11-03 02:03:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:03,028 INFO L93 Difference]: Finished difference Result 302 states and 798 transitions. [2022-11-03 02:03:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:03,029 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 [2022-11-03 02:03:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:03,031 INFO L225 Difference]: With dead ends: 302 [2022-11-03 02:03:03,031 INFO L226 Difference]: Without dead ends: 266 [2022-11-03 02:03:03,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:03,033 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 50 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:03,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 34 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-03 02:03:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 236. [2022-11-03 02:03:03,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 2.663793103448276) internal successors, (618), 235 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 618 transitions. [2022-11-03 02:03:03,045 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 618 transitions. Word has length 19 [2022-11-03 02:03:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:03,046 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 618 transitions. [2022-11-03 02:03:03,046 INFO L496 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) [2022-11-03 02:03:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 618 transitions. [2022-11-03 02:03:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:03:03,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:03,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:03,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:03:03,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-03 02:03:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -959040476, now seen corresponding path program 1 times [2022-11-03 02:03:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:03,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762538929] [2022-11-03 02:03:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:03,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:03,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762538929] [2022-11-03 02:03:03,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762538929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:03,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:03,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666601246] [2022-11-03 02:03:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:03,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:03,126 INFO L87 Difference]: Start difference. First operand 236 states and 618 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) [2022-11-03 02:03:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:03,214 INFO L93 Difference]: Finished difference Result 266 states and 697 transitions. [2022-11-03 02:03:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:03,214 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 [2022-11-03 02:03:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:03,217 INFO L225 Difference]: With dead ends: 266 [2022-11-03 02:03:03,217 INFO L226 Difference]: Without dead ends: 266 [2022-11-03 02:03:03,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:03,220 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:03,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:03,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-03 02:03:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 236. [2022-11-03 02:03:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 2.646551724137931) internal successors, (614), 235 states have internal predecessors, (614), 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) [2022-11-03 02:03:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 614 transitions. [2022-11-03 02:03:03,233 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 614 transitions. Word has length 19 [2022-11-03 02:03:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:03,234 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 614 transitions. [2022-11-03 02:03:03,235 INFO L496 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) [2022-11-03 02:03:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 614 transitions. [2022-11-03 02:03:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:03:03,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:03,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:03:03,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-03 02:03:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1397397980, now seen corresponding path program 2 times [2022-11-03 02:03:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:03,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718939913] [2022-11-03 02:03:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:03,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:03,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718939913] [2022-11-03 02:03:03,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718939913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:03,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:03,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162894317] [2022-11-03 02:03:03,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:03,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:03,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:03,334 INFO L87 Difference]: Start difference. First operand 236 states and 614 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) [2022-11-03 02:03:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:03,456 INFO L93 Difference]: Finished difference Result 240 states and 642 transitions. [2022-11-03 02:03:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:03,457 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 [2022-11-03 02:03:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:03,458 INFO L225 Difference]: With dead ends: 240 [2022-11-03 02:03:03,458 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:03:03,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:03,463 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:03,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 21 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:03:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:03:03,472 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) [2022-11-03 02:03:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:03:03,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-03 02:03:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:03,473 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:03:03,473 INFO L496 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) [2022-11-03 02:03:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:03:03,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:03:03,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-03 02:03:03,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-03 02:03:03,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-03 02:03:03,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-03 02:03:03,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-03 02:03:03,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-03 02:03:03,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:03:03,487 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-11-03 02:03:03,495 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 02:03:03,496 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:03:03,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:03:03 BasicIcfg [2022-11-03 02:03:03,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:03:03,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:03:03,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:03:03,501 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:03:03,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:57" (3/4) ... [2022-11-03 02:03:03,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:03:03,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-03 02:03:03,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-03 02:03:03,521 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-03 02:03:03,521 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 02:03:03,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:03:03,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:03:03,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:03:03,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:03:03,561 INFO L158 Benchmark]: Toolchain (without parser) took 7578.88ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 69.9MB in the beginning and 93.4MB in the end (delta: -23.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:03:03,562 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 107.0MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:03:03,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 904.88ms. Allocated memory is still 107.0MB. Free memory was 69.6MB in the beginning and 72.6MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:03:03,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.65ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:03:03,563 INFO L158 Benchmark]: Boogie Preprocessor took 38.37ms. Allocated memory is still 107.0MB. Free memory was 70.9MB in the beginning and 69.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:03:03,564 INFO L158 Benchmark]: RCFGBuilder took 615.23ms. Allocated memory is still 107.0MB. Free memory was 69.1MB in the beginning and 55.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:03:03,564 INFO L158 Benchmark]: TraceAbstraction took 5882.50ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 54.1MB in the beginning and 95.5MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:03:03,565 INFO L158 Benchmark]: Witness Printer took 60.26ms. Allocated memory is still 134.2MB. Free memory was 95.5MB in the beginning and 93.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:03:03,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 107.0MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 904.88ms. Allocated memory is still 107.0MB. Free memory was 69.6MB in the beginning and 72.6MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.65ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.37ms. Allocated memory is still 107.0MB. Free memory was 70.9MB in the beginning and 69.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 615.23ms. Allocated memory is still 107.0MB. Free memory was 69.1MB in the beginning and 55.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5882.50ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 54.1MB in the beginning and 95.5MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 60.26ms. Allocated memory is still 134.2MB. Free memory was 95.5MB in the beginning and 93.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 104 PlacesBefore, 46 PlacesAfterwards, 117 TransitionsBefore, 51 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 8 ChoiceCompositions, 86 TotalNumberOfCompositions, 9532 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4135, positive: 3864, positive conditional: 0, positive unconditional: 3864, negative: 271, negative conditional: 0, negative unconditional: 271, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2388, positive: 2339, positive conditional: 0, positive unconditional: 2339, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2388, positive: 2332, positive conditional: 0, positive unconditional: 2332, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 139, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4135, positive: 1525, positive conditional: 0, positive unconditional: 1525, negative: 222, negative conditional: 0, negative unconditional: 222, unknown: 2388, unknown conditional: 0, unknown unconditional: 2388] , Statistics on independence cache: Total cache size (in pairs): 258, Positive cache size: 224, Positive conditional cache size: 0, Positive unconditional cache size: 224, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 154 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 194 mSDsluCounter, 160 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 574 IncrementalHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 93 mSDtfsCounter, 574 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 92 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 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! [2022-11-03 02:03:03,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c0dae3-6313-49ce-83ac-d41753eb5932/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE