./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/fk2012.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/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_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/fk2012.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25a65bfeb78eff83ae0d8a23f733f9dc95190d8c8aa20c7c495d09a2bd7eb6f0 --- 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 04:03:04,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:03:04,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:03:04,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:03:04,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:03:04,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:03:04,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:03:04,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:03:04,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:03:04,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:03:04,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:03:04,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:03:04,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:03:04,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:03:04,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:03:04,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:03:04,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:03:04,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:03:04,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:03:04,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:03:04,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:03:04,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:03:04,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:03:04,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:03:04,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:03:04,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:03:04,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:03:04,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:03:04,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:03:04,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:03:04,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:03:04,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:03:04,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:03:04,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:03:04,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:03:04,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:03:04,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:03:04,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:03:04,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:03:04,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:03:04,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:03:04,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 04:03:04,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:03:04,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:03:04,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:03:04,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:03:04,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:03:04,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:03:04,978 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:03:04,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:03:04,978 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:03:04,978 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:03:04,979 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:03:04,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:03:04,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:03:04,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:03:04,980 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:03:04,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:03:04,981 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:03:04,981 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:03:04,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:03:04,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:03:04,982 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 04:03:04,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:03:04,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:03:04,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:03:04,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:03:04,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:03:04,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:03:04,984 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 04:03:04,984 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:03:04,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:03:04,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:03:04,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:03:04,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:03:04,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:03:04,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:04,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:03:04,986 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:03:04,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:03:04,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:03:04,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:03:04,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:03:04,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:03:04,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:03:04,987 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_a5086a3c-a473-4a4a-b2b9-db656a5355ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25a65bfeb78eff83ae0d8a23f733f9dc95190d8c8aa20c7c495d09a2bd7eb6f0 [2022-11-03 04:03:05,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:03:05,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:03:05,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:03:05,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:03:05,344 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:03:05,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-lit/fk2012.i [2022-11-03 04:03:05,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/data/6ad1d170c/3ebb071e6d5e4b7388d4984ae9d5852e/FLAG7dcbd987d [2022-11-03 04:03:06,010 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:03:06,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/sv-benchmarks/c/pthread-lit/fk2012.i [2022-11-03 04:03:06,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/data/6ad1d170c/3ebb071e6d5e4b7388d4984ae9d5852e/FLAG7dcbd987d [2022-11-03 04:03:06,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/data/6ad1d170c/3ebb071e6d5e4b7388d4984ae9d5852e [2022-11-03 04:03:06,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:03:06,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:03:06,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:06,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:03:06,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:03:06,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:06" (1/1) ... [2022-11-03 04:03:06,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1fa535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:06, skipping insertion in model container [2022-11-03 04:03:06,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:06" (1/1) ... [2022-11-03 04:03:06,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:03:06,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:03:06,553 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_a5086a3c-a473-4a4a-b2b9-db656a5355ae/sv-benchmarks/c/pthread-lit/fk2012.i[800,813] [2022-11-03 04:03:06,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:06,890 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:03:06,904 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_a5086a3c-a473-4a4a-b2b9-db656a5355ae/sv-benchmarks/c/pthread-lit/fk2012.i[800,813] [2022-11-03 04:03:06,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:07,004 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:03:07,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07 WrapperNode [2022-11-03 04:03:07,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:07,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:07,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:03:07,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:03:07,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,056 INFO L138 Inliner]: procedures = 277, calls = 35, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 166 [2022-11-03 04:03:07,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:07,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:03:07,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:03:07,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:03:07,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,086 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:03:07,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:03:07,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:03:07,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:03:07,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (1/1) ... [2022-11-03 04:03:07,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:07,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:03:07,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5086a3c-a473-4a4a-b2b9-db656a5355ae/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:03:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 04:03:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:03:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:03:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 04:03:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:03:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:03:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure producer [2022-11-03 04:03:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure producer [2022-11-03 04:03:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure consumer [2022-11-03 04:03:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer [2022-11-03 04:03:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:03:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:03:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:03:07,177 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 04:03:07,357 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:03:07,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:03:07,746 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:03:07,862 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:03:07,875 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 04:03:07,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:07 BoogieIcfgContainer [2022-11-03 04:03:07,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:03:07,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:03:07,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:03:07,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:03:07,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:03:06" (1/3) ... [2022-11-03 04:03:07,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec30f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:07, skipping insertion in model container [2022-11-03 04:03:07,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:07" (2/3) ... [2022-11-03 04:03:07,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec30f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:07, skipping insertion in model container [2022-11-03 04:03:07,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:07" (3/3) ... [2022-11-03 04:03:07,889 INFO L112 eAbstractionObserver]: Analyzing ICFG fk2012.i [2022-11-03 04:03:07,898 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 04:03:07,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:03:07,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 04:03:07,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 04:03:08,014 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 04:03:08,072 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:03:08,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 134 transitions, 278 flow [2022-11-03 04:03:08,097 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 134 transitions, 278 flow [2022-11-03 04:03:08,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 134 transitions, 278 flow [2022-11-03 04:03:08,235 INFO L130 PetriNetUnfolder]: 19/288 cut-off events. [2022-11-03 04:03:08,236 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 04:03:08,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 288 events. 19/288 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1134 event pairs, 1 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2022-11-03 04:03:08,262 INFO L118 LiptonReduction]: Number of co-enabled transitions 8142 [2022-11-03 04:03:11,696 INFO L133 LiptonReduction]: Checked pairs total: 11037 [2022-11-03 04:03:11,697 INFO L135 LiptonReduction]: Total number of compositions: 121 [2022-11-03 04:03:11,711 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 39 transitions, 88 flow [2022-11-03 04:03:11,823 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1559 states, 1479 states have (on average 3.0845165652467883) internal successors, (4562), 1558 states have internal predecessors, (4562), 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 04:03:11,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:03:11,858 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;@20fa2c00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:03:11,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-03 04:03:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 1479 states have (on average 3.0845165652467883) internal successors, (4562), 1558 states have internal predecessors, (4562), 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 04:03:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:03:11,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:11,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:03:11,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 04:03:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash 22621531, now seen corresponding path program 1 times [2022-11-03 04:03:11,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:11,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575496437] [2022-11-03 04:03:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:12,117 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 04:03:12,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575496437] [2022-11-03 04:03:12,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575496437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:12,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:12,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 04:03:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397323214] [2022-11-03 04:03:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:12,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:03:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:03:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:12,162 INFO L87 Difference]: Start difference. First operand has 1559 states, 1479 states have (on average 3.0845165652467883) internal successors, (4562), 1558 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 04:03:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:12,281 INFO L93 Difference]: Finished difference Result 1289 states and 3647 transitions. [2022-11-03 04:03:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:03:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-03 04:03:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:12,317 INFO L225 Difference]: With dead ends: 1289 [2022-11-03 04:03:12,317 INFO L226 Difference]: Without dead ends: 1289 [2022-11-03 04:03:12,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:12,323 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:12,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:03:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-11-03 04:03:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1289. [2022-11-03 04:03:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1244 states have (on average 2.9316720257234725) internal successors, (3647), 1288 states have internal predecessors, (3647), 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 04:03:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 3647 transitions. [2022-11-03 04:03:12,457 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 3647 transitions. Word has length 4 [2022-11-03 04:03:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:12,458 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 3647 transitions. [2022-11-03 04:03:12,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 04:03:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 3647 transitions. [2022-11-03 04:03:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:03:12,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:12,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:03:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:03:12,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 04:03:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 264473337, now seen corresponding path program 1 times [2022-11-03 04:03:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:12,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820482295] [2022-11-03 04:03:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:12,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:12,634 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 04:03:12,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:12,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820482295] [2022-11-03 04:03:12,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820482295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:12,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:12,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:03:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218765593] [2022-11-03 04:03:12,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:12,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:03:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:12,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:03:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:12,653 INFO L87 Difference]: Start difference. First operand 1289 states and 3647 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:12,749 INFO L93 Difference]: Finished difference Result 829 states and 2351 transitions. [2022-11-03 04:03:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:03:12,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 04:03:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:12,755 INFO L225 Difference]: With dead ends: 829 [2022-11-03 04:03:12,755 INFO L226 Difference]: Without dead ends: 829 [2022-11-03 04:03:12,756 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 04:03:12,757 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:12,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:03:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-03 04:03:12,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 825. [2022-11-03 04:03:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 790 states have (on average 2.9658227848101264) internal successors, (2343), 824 states have internal predecessors, (2343), 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 04:03:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2343 transitions. [2022-11-03 04:03:12,785 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2343 transitions. Word has length 6 [2022-11-03 04:03:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:12,786 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 2343 transitions. [2022-11-03 04:03:12,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2343 transitions. [2022-11-03 04:03:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:03:12,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:12,787 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 04:03:12,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:03:12,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 04:03:12,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash 264417636, now seen corresponding path program 1 times [2022-11-03 04:03:12,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:12,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906589769] [2022-11-03 04:03:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:03:12,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:03:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:03:12,868 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:03:12,870 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:03:12,872 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-03 04:03:12,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-03 04:03:12,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-03 04:03:12,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-03 04:03:12,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-03 04:03:12,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-03 04:03:12,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-03 04:03:12,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 18 remaining) [2022-11-03 04:03:12,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-03 04:03:12,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-03 04:03:12,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-03 04:03:12,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-03 04:03:12,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-03 04:03:12,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-03 04:03:12,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-03 04:03:12,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producerErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-03 04:03:12,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-03 04:03:12,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-03 04:03:12,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:03:12,884 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 04:03:12,886 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 04:03:12,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 04:03:12,931 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 04:03:12,935 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:03:12,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 222 transitions, 468 flow [2022-11-03 04:03:12,936 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 222 transitions, 468 flow [2022-11-03 04:03:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 222 transitions, 468 flow [2022-11-03 04:03:13,133 INFO L130 PetriNetUnfolder]: 55/758 cut-off events. [2022-11-03 04:03:13,133 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-03 04:03:13,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 758 events. 55/758 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4538 event pairs, 4 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 494. Up to 18 conditions per place. [2022-11-03 04:03:13,187 INFO L118 LiptonReduction]: Number of co-enabled transitions 31592 [2022-11-03 04:03:17,775 INFO L133 LiptonReduction]: Checked pairs total: 55881 [2022-11-03 04:03:17,776 INFO L135 LiptonReduction]: Total number of compositions: 193 [2022-11-03 04:03:17,777 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 79 transitions, 182 flow [2022-11-03 04:03:35,955 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 498198 states, 496307 states have (on average 5.158242781181809) internal successors, (2560072), 498197 states have internal predecessors, (2560072), 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 04:03:35,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:03:35,995 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;@20fa2c00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:03:35,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-03 04:03:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 498198 states, 496307 states have (on average 5.158242781181809) internal successors, (2560072), 498197 states have internal predecessors, (2560072), 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 04:03:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:03:36,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:36,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:03:36,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [producerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, producerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-03 04:03:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 38123768, now seen corresponding path program 1 times [2022-11-03 04:03:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:36,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185291570] [2022-11-03 04:03:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:36,827 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 04:03:36,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:36,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185291570] [2022-11-03 04:03:36,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185291570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:36,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:36,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 04:03:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99016279] [2022-11-03 04:03:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:36,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:03:36,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:03:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:37,732 INFO L87 Difference]: Start difference. First operand has 498198 states, 496307 states have (on average 5.158242781181809) internal successors, (2560072), 498197 states have internal predecessors, (2560072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 04:03:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:49,295 INFO L93 Difference]: Finished difference Result 402977 states and 1965048 transitions. [2022-11-03 04:03:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:03:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-03 04:03:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:55,099 INFO L225 Difference]: With dead ends: 402977 [2022-11-03 04:03:55,099 INFO L226 Difference]: Without dead ends: 402977 [2022-11-03 04:03:55,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:55,101 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:55,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:03:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402977 states.