./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba --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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --- 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-b5237d8 [2022-11-22 01:20:04,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:20:04,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:20:04,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:20:04,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:20:04,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:20:04,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:20:04,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:20:04,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:20:04,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:20:04,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:20:04,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:20:04,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:20:04,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:20:04,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:20:04,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:20:04,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:20:04,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:20:04,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:20:04,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:20:04,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:20:04,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:20:04,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:20:04,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:20:04,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:20:04,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:20:04,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:20:04,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:20:04,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:20:04,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:20:04,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:20:04,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:20:04,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:20:05,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:20:05,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:20:05,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:20:05,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:20:05,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:20:05,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:20:05,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:20:05,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:20:05,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:20:05,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:20:05,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:20:05,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:20:05,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:20:05,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:20:05,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:20:05,064 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:20:05,064 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:20:05,064 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:20:05,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:20:05,065 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:20:05,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:20:05,066 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:20:05,066 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:20:05,066 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:20:05,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:20:05,067 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:20:05,067 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:20:05,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:20:05,068 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:20:05,068 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:20:05,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:20:05,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:20:05,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:20:05,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:20:05,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:20:05,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:20:05,070 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:20:05,070 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:20:05,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:20:05,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:20:05,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:20:05,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:20:05,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:20:05,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:05,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:20:05,086 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:20:05,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:20:05,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:20:05,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:20:05,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:20:05,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:20:05,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:20:05,088 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_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2022-11-22 01:20:05,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:20:05,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:20:05,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:20:05,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:20:05,412 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:20:05,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-22 01:20:08,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:20:08,710 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:20:08,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-22 01:20:08,719 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/data/a30496a64/635032a069874d529f0f31202a4760e4/FLAGc75b729b7 [2022-11-22 01:20:08,741 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/data/a30496a64/635032a069874d529f0f31202a4760e4 [2022-11-22 01:20:08,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:20:08,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:20:08,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:08,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:20:08,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:20:08,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:08" (1/1) ... [2022-11-22 01:20:08,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbe8226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:08, skipping insertion in model container [2022-11-22 01:20:08,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:08" (1/1) ... [2022-11-22 01:20:08,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:20:08,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:20:08,980 WARN L237 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_9435b967-331e-4c53-85ab-56dbfadf2e4e/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-22 01:20:08,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:08,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:20:09,014 WARN L237 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_9435b967-331e-4c53-85ab-56dbfadf2e4e/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-22 01:20:09,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:09,029 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:20:09,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09 WrapperNode [2022-11-22 01:20:09,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:09,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:09,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:20:09,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:20:09,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,077 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2022-11-22 01:20:09,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:09,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:20:09,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:20:09,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:20:09,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:20:09,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:20:09,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:20:09,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:20:09,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (1/1) ... [2022-11-22 01:20:09,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:20:09,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:20:09,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:20:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:20:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:20:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:20:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 01:20:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 01:20:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:20:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:20:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:20:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:20:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:20:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:20:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:20:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:20:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:20:09,220 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:20:09,323 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:20:09,325 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:20:09,592 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:20:09,809 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:20:09,810 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:20:09,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:09 BoogieIcfgContainer [2022-11-22 01:20:09,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:20:09,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:20:09,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:20:09,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:20:09,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:20:08" (1/3) ... [2022-11-22 01:20:09,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9627f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:09, skipping insertion in model container [2022-11-22 01:20:09,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:09" (2/3) ... [2022-11-22 01:20:09,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9627f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:09, skipping insertion in model container [2022-11-22 01:20:09,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:09" (3/3) ... [2022-11-22 01:20:09,823 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-11-22 01:20:09,832 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:20:09,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:20:09,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 01:20:09,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:20:09,917 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 01:20:09,952 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:20:09,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 103 transitions, 222 flow [2022-11-22 01:20:09,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 103 transitions, 222 flow [2022-11-22 01:20:09,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 103 transitions, 222 flow [2022-11-22 01:20:10,092 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2022-11-22 01:20:10,093 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 01:20:10,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 2/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-22 01:20:10,102 INFO L119 LiptonReduction]: Number of co-enabled transitions 538 [2022-11-22 01:20:13,905 INFO L134 LiptonReduction]: Checked pairs total: 2240 [2022-11-22 01:20:13,906 INFO L136 LiptonReduction]: Total number of compositions: 90 [2022-11-22 01:20:13,914 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 68 flow [2022-11-22 01:20:13,944 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 176 states, 152 states have (on average 2.5197368421052633) internal successors, (383), 175 states have internal predecessors, (383), 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) [2022-11-22 01:20:13,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:20:13,969 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;@568fe2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:20:13,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-22 01:20:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 152 states have (on average 2.5197368421052633) internal successors, (383), 175 states have internal predecessors, (383), 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) [2022-11-22 01:20:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:20:13,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:13,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:20:13,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:20:13,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:13,983 INFO L85 PathProgramCache]: Analyzing trace with hash 432898, now seen corresponding path program 1 times [2022-11-22 01:20:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:13,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31427374] [2022-11-22 01:20:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:13,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:14,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:14,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31427374] [2022-11-22 01:20:14,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31427374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:14,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:14,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:20:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442128625] [2022-11-22 01:20:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:14,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:14,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:14,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:14,414 INFO L87 Difference]: Start difference. First operand has 176 states, 152 states have (on average 2.5197368421052633) internal successors, (383), 175 states have internal predecessors, (383), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-22 01:20:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:14,531 INFO L93 Difference]: Finished difference Result 188 states and 385 transitions. [2022-11-22 01:20:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:14,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-22 01:20:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:14,552 INFO L225 Difference]: With dead ends: 188 [2022-11-22 01:20:14,553 INFO L226 Difference]: Without dead ends: 188 [2022-11-22 01:20:14,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:14,560 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:14,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:20:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-22 01:20:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 164. [2022-11-22 01:20:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 143 states have (on average 2.4755244755244754) internal successors, (354), 163 states have internal predecessors, (354), 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) [2022-11-22 01:20:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 354 transitions. [2022-11-22 01:20:14,632 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 354 transitions. Word has length 3 [2022-11-22 01:20:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:14,633 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 354 transitions. [2022-11-22 01:20:14,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-22 01:20:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 354 transitions. [2022-11-22 01:20:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:20:14,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:14,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:20:14,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:20:14,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:20:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash 432899, now seen corresponding path program 1 times [2022-11-22 01:20:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:14,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718178888] [2022-11-22 01:20:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:14,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:14,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718178888] [2022-11-22 01:20:14,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718178888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:14,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:14,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:20:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135326960] [2022-11-22 01:20:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:14,799 INFO L87 Difference]: Start difference. First operand 164 states and 354 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-22 01:20:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:14,839 INFO L93 Difference]: Finished difference Result 132 states and 280 transitions. [2022-11-22 01:20:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-22 01:20:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:14,843 INFO L225 Difference]: With dead ends: 132 [2022-11-22 01:20:14,843 INFO L226 Difference]: Without dead ends: 132 [2022-11-22 01:20:14,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:14,846 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:14,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:20:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-22 01:20:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-22 01:20:14,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 118 states have (on average 2.3728813559322033) internal successors, (280), 131 states have internal predecessors, (280), 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) [2022-11-22 01:20:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 280 transitions. [2022-11-22 01:20:14,859 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 280 transitions. Word has length 3 [2022-11-22 01:20:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:14,859 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 280 transitions. [2022-11-22 01:20:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-22 01:20:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 280 transitions. [2022-11-22 01:20:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:20:14,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:14,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:20:14,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:20:14,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:20:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash 416027923, now seen corresponding path program 1 times [2022-11-22 01:20:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:14,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15154325] [2022-11-22 01:20:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:14,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:14,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15154325] [2022-11-22 01:20:14,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15154325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:14,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:14,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:20:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135966296] [2022-11-22 01:20:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:14,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:14,984 INFO L87 Difference]: Start difference. First operand 132 states and 280 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-22 01:20:15,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:15,011 INFO L93 Difference]: Finished difference Result 100 states and 206 transitions. [2022-11-22 01:20:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:15,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-22 01:20:15,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:15,012 INFO L225 Difference]: With dead ends: 100 [2022-11-22 01:20:15,012 INFO L226 Difference]: Without dead ends: 100 [2022-11-22 01:20:15,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:15,014 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:15,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:20:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-22 01:20:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-22 01:20:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 2.21505376344086) internal successors, (206), 99 states have internal predecessors, (206), 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) [2022-11-22 01:20:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 206 transitions. [2022-11-22 01:20:15,020 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 206 transitions. Word has length 5 [2022-11-22 01:20:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:15,020 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 206 transitions. [2022-11-22 01:20:15,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-22 01:20:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 206 transitions. [2022-11-22 01:20:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:20:15,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:15,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:20:15,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:20:15,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:20:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash 14745783, now seen corresponding path program 1 times [2022-11-22 01:20:15,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:15,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768967760] [2022-11-22 01:20:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:15,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:15,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768967760] [2022-11-22 01:20:15,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768967760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:15,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:15,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:20:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846336095] [2022-11-22 01:20:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:15,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:20:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:20:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:20:15,094 INFO L87 Difference]: Start difference. First operand 100 states and 206 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-22 01:20:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:15,151 INFO L93 Difference]: Finished difference Result 80 states and 161 transitions. [2022-11-22 01:20:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:20:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2022-11-22 01:20:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:15,152 INFO L225 Difference]: With dead ends: 80 [2022-11-22 01:20:15,152 INFO L226 Difference]: Without dead ends: 80 [2022-11-22 01:20:15,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:20:15,157 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:15,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:20:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-22 01:20:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-22 01:20:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 2.090909090909091) internal successors, (161), 79 states have internal predecessors, (161), 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) [2022-11-22 01:20:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 161 transitions. [2022-11-22 01:20:15,164 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 161 transitions. Word has length 6 [2022-11-22 01:20:15,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:15,166 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 161 transitions. [2022-11-22 01:20:15,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-22 01:20:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 161 transitions. [2022-11-22 01:20:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:20:15,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:15,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:20:15,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:20:15,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:20:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash 11963094, now seen corresponding path program 1 times [2022-11-22 01:20:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:15,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024231956] [2022-11-22 01:20:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:15,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:15,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:15,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024231956] [2022-11-22 01:20:15,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024231956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:15,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:15,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:20:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352274582] [2022-11-22 01:20:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:15,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:15,237 INFO L87 Difference]: Start difference. First operand 80 states and 161 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2022-11-22 01:20:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:15,279 INFO L93 Difference]: Finished difference Result 62 states and 117 transitions. [2022-11-22 01:20:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2022-11-22 01:20:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:15,280 INFO L225 Difference]: With dead ends: 62 [2022-11-22 01:20:15,280 INFO L226 Difference]: Without dead ends: 60 [2022-11-22 01:20:15,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:15,281 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:15,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:20:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-22 01:20:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-22 01:20:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.9310344827586208) internal successors, (112), 59 states have internal predecessors, (112), 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) [2022-11-22 01:20:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 112 transitions. [2022-11-22 01:20:15,296 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 112 transitions. Word has length 6 [2022-11-22 01:20:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:15,297 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 112 transitions. [2022-11-22 01:20:15,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2022-11-22 01:20:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 112 transitions. [2022-11-22 01:20:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:20:15,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:15,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:20:15,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:20:15,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:20:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash -425022189, now seen corresponding path program 1 times [2022-11-22 01:20:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:15,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204407820] [2022-11-22 01:20:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:15,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:15,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204407820] [2022-11-22 01:20:15,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204407820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:15,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:15,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:20:15,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150220498] [2022-11-22 01:20:15,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:15,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:20:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:20:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:20:15,429 INFO L87 Difference]: Start difference. First operand 60 states and 112 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-22 01:20:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:15,460 INFO L93 Difference]: Finished difference Result 54 states and 102 transitions. [2022-11-22 01:20:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:20:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2022-11-22 01:20:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:15,461 INFO L225 Difference]: With dead ends: 54 [2022-11-22 01:20:15,461 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:20:15,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:20:15,462 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:15,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:20:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:20:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:20:15,464 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) [2022-11-22 01:20:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:20:15,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-22 01:20:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:15,465 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:20:15,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-22 01:20:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:20:15,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:20:15,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-22 01:20:15,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-22 01:20:15,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-22 01:20:15,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-22 01:20:15,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-22 01:20:15,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-22 01:20:15,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-22 01:20:15,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-22 01:20:15,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-22 01:20:15,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-22 01:20:15,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-22 01:20:15,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-22 01:20:15,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-22 01:20:15,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-22 01:20:15,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-22 01:20:15,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-22 01:20:15,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-22 01:20:15,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-22 01:20:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:20:15,476 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-22 01:20:15,481 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:20:15,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:20:15,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:20:15 BasicIcfg [2022-11-22 01:20:15,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:20:15,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:20:15,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:20:15,485 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:20:15,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:09" (3/4) ... [2022-11-22 01:20:15,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:20:15,493 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-22 01:20:15,493 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-22 01:20:15,498 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-22 01:20:15,498 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 01:20:15,499 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:20:15,499 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:20:15,542 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:20:15,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:20:15,543 INFO L158 Benchmark]: Toolchain (without parser) took 6794.05ms. Allocated memory was 127.9MB in the beginning and 207.6MB in the end (delta: 79.7MB). Free memory was 61.7MB in the beginning and 146.1MB in the end (delta: -84.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:20:15,543 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:20:15,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.88ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 61.6MB in the beginning and 137.1MB in the end (delta: -75.6MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-11-22 01:20:15,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.00ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 135.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:20:15,544 INFO L158 Benchmark]: Boogie Preprocessor took 41.84ms. Allocated memory is still 172.0MB. Free memory was 135.5MB in the beginning and 134.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:20:15,545 INFO L158 Benchmark]: RCFGBuilder took 692.29ms. Allocated memory is still 172.0MB. Free memory was 134.0MB in the beginning and 136.6MB in the end (delta: -2.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:20:15,545 INFO L158 Benchmark]: TraceAbstraction took 5668.50ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 135.7MB in the beginning and 149.3MB in the end (delta: -13.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2022-11-22 01:20:15,546 INFO L158 Benchmark]: Witness Printer took 57.67ms. Allocated memory is still 207.6MB. Free memory was 149.3MB in the beginning and 146.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:20:15,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.88ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 61.6MB in the beginning and 137.1MB in the end (delta: -75.6MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.00ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 135.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.84ms. Allocated memory is still 172.0MB. Free memory was 135.5MB in the beginning and 134.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 692.29ms. Allocated memory is still 172.0MB. Free memory was 134.0MB in the beginning and 136.6MB in the end (delta: -2.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5668.50ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 135.7MB in the beginning and 149.3MB in the end (delta: -13.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Witness Printer took 57.67ms. Allocated memory is still 207.6MB. Free memory was 149.3MB in the beginning and 146.1MB in the end (delta: 3.1MB). 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: 3.9s, 108 PlacesBefore, 33 PlacesAfterwards, 103 TransitionsBefore, 26 TransitionsAfterwards, 538 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 90 TotalNumberOfCompositions, 2240 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1239, independent: 1097, independent conditional: 0, independent unconditional: 1097, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 414, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 414, independent: 372, independent conditional: 0, independent unconditional: 372, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 190, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1239, independent: 710, independent conditional: 0, independent unconditional: 710, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 414, unknown conditional: 0, unknown unconditional: 414] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 7 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 01:20:15,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9435b967-331e-4c53-85ab-56dbfadf2e4e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE