./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/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_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --- 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 04:06:57,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:57,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:57,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:57,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:58,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:58,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:58,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:58,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:58,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:58,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:58,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:58,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:58,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:58,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:58,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:58,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:58,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:58,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:58,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:58,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:58,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:58,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:58,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:58,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:58,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:58,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:58,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:58,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:58,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:58,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:58,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:58,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:58,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:58,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:58,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:58,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:58,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:58,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:58,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:58,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:58,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:06:58,121 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:58,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:58,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:58,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:58,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:58,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:58,123 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:58,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:58,124 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:58,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:58,125 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:58,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:58,125 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:58,126 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:58,126 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:58,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:58,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:58,127 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:58,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:58,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:58,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:58,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:58,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:58,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:58,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:58,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:58,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:58,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:58,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:58,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:58,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:58,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:58,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:58,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:58,133 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:58,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:58,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:58,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:58,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:58,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:58,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:58,135 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_4e6b2335-1205-402f-a67f-0f1f292dc48c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 [2022-11-03 04:06:58,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:58,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:58,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:58,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:58,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:58,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-03 04:06:58,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/data/d4d5a656d/bde2d865b108474dbce90796f374cc3a/FLAG4aacf819a [2022-11-03 04:06:59,146 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:59,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-03 04:06:59,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/data/d4d5a656d/bde2d865b108474dbce90796f374cc3a/FLAG4aacf819a [2022-11-03 04:06:59,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/data/d4d5a656d/bde2d865b108474dbce90796f374cc3a [2022-11-03 04:06:59,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:59,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:59,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:59,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:59,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:59,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:06:59,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d1fdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59, skipping insertion in model container [2022-11-03 04:06:59,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:06:59,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:59,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:59,829 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_4e6b2335-1205-402f-a67f-0f1f292dc48c/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-03 04:06:59,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:59,844 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:59,929 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_4e6b2335-1205-402f-a67f-0f1f292dc48c/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-03 04:06:59,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:59,950 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:59,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59 WrapperNode [2022-11-03 04:06:59,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:59,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:59,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:59,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:59,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:06:59,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,014 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 440 [2022-11-03 04:07:00,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:00,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:07:00,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:07:00,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:07:00,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:07:00,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:07:00,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:07:00,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:07:00,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:07:00,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:07:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:00,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:07:00,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6b2335-1205-402f-a67f-0f1f292dc48c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 04:07:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 04:07:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 04:07:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-03 04:07:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-03 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:07:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:07:00,176 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 04:07:00,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:07:00,370 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:07:01,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:07:01,521 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:07:01,522 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:07:01,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:01 BoogieIcfgContainer [2022-11-03 04:07:01,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:07:01,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:07:01,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:07:01,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:07:01,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:59" (1/3) ... [2022-11-03 04:07:01,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aed3431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:01, skipping insertion in model container [2022-11-03 04:07:01,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (2/3) ... [2022-11-03 04:07:01,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aed3431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:01, skipping insertion in model container [2022-11-03 04:07:01,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:01" (3/3) ... [2022-11-03 04:07:01,538 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2022-11-03 04:07:01,549 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 04:07:01,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:07:01,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:07:01,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 04:07:01,684 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-03 04:07:01,750 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:07:01,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 202 transitions, 436 flow [2022-11-03 04:07:01,781 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 202 transitions, 436 flow [2022-11-03 04:07:01,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 202 transitions, 436 flow [2022-11-03 04:07:01,978 INFO L130 PetriNetUnfolder]: 2/198 cut-off events. [2022-11-03 04:07:01,978 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-03 04:07:01,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 198 events. 2/198 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 206 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-11-03 04:07:01,991 INFO L118 LiptonReduction]: Number of co-enabled transitions 5712 [2022-11-03 04:07:11,423 INFO L133 LiptonReduction]: Checked pairs total: 43317 [2022-11-03 04:07:11,425 INFO L135 LiptonReduction]: Total number of compositions: 139 [2022-11-03 04:07:11,435 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 74 transitions, 180 flow [2022-11-03 04:07:16,157 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 88652 states, 88651 states have (on average 4.1476802292134325) internal successors, (367696), 88651 states have internal predecessors, (367696), 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 04:07:16,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:07:16,259 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;@474565f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:07:16,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-03 04:07:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 88652 states, 88651 states have (on average 4.1476802292134325) internal successors, (367696), 88651 states have internal predecessors, (367696), 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 04:07:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 04:07:17,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:17,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:17,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-03 04:07:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1739974347, now seen corresponding path program 1 times [2022-11-03 04:07:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:17,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515515675] [2022-11-03 04:07:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:19,886 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 04:07:19,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:19,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515515675] [2022-11-03 04:07:19,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515515675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:19,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:19,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:07:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873755540] [2022-11-03 04:07:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:19,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 04:07:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 04:07:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:07:20,080 INFO L87 Difference]: Start difference. First operand has 88652 states, 88651 states have (on average 4.1476802292134325) internal successors, (367696), 88651 states have internal predecessors, (367696), 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 11 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 04:07:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:24,180 INFO L93 Difference]: Finished difference Result 109935 states and 440115 transitions. [2022-11-03 04:07:24,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 04:07:24,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 69 [2022-11-03 04:07:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:25,983 INFO L225 Difference]: With dead ends: 109935 [2022-11-03 04:07:25,983 INFO L226 Difference]: Without dead ends: 109498 [2022-11-03 04:07:25,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:07:25,994 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 456 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:25,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 34 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 04:07:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109498 states. [2022-11-03 04:07:31,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109498 to 91102. [2022-11-03 04:07:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91102 states, 91101 states have (on average 4.132182961767708) internal successors, (376446), 91101 states have internal predecessors, (376446), 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 04:07:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91102 states to 91102 states and 376446 transitions. [2022-11-03 04:07:33,003 INFO L78 Accepts]: Start accepts. Automaton has 91102 states and 376446 transitions. Word has length 69 [2022-11-03 04:07:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:33,022 INFO L495 AbstractCegarLoop]: Abstraction has 91102 states and 376446 transitions. [2022-11-03 04:07:33,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 04:07:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 91102 states and 376446 transitions. [2022-11-03 04:07:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 04:07:34,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:34,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:34,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:07:34,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-03 04:07:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash -429950225, now seen corresponding path program 2 times [2022-11-03 04:07:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:34,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593340927] [2022-11-03 04:07:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:36,468 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 04:07:36,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:36,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593340927] [2022-11-03 04:07:36,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593340927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:36,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:36,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 04:07:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633646785] [2022-11-03 04:07:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:36,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 04:07:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 04:07:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:07:36,486 INFO L87 Difference]: Start difference. First operand 91102 states and 376446 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 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 04:07:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:38,971 INFO L93 Difference]: Finished difference Result 110956 states and 454760 transitions. [2022-11-03 04:07:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:07:38,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 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 69 [2022-11-03 04:07:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:40,315 INFO L225 Difference]: With dead ends: 110956 [2022-11-03 04:07:40,315 INFO L226 Difference]: Without dead ends: 110684 [2022-11-03 04:07:40,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:07:40,317 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 127 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:40,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 120 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 04:07:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110684 states. [2022-11-03 04:07:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110684 to 102736. [2022-11-03 04:07:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102736 states, 102735 states have (on average 4.122879252445612) internal successors, (423564), 102735 states have internal predecessors, (423564), 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 04:07:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102736 states to 102736 states and 423564 transitions. [2022-11-03 04:07:46,548 INFO L78 Accepts]: Start accepts. Automaton has 102736 states and 423564 transitions. Word has length 69 [2022-11-03 04:07:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:46,549 INFO L495 AbstractCegarLoop]: Abstraction has 102736 states and 423564 transitions. [2022-11-03 04:07:46,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 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 04:07:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 102736 states and 423564 transitions. [2022-11-03 04:07:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 04:07:46,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:46,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:46,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:07:46,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-03 04:07:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1286499413, now seen corresponding path program 3 times [2022-11-03 04:07:46,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:46,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808928480] [2022-11-03 04:07:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:49,379 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 04:07:49,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808928480] [2022-11-03 04:07:49,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808928480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:49,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:49,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 04:07:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533588756] [2022-11-03 04:07:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:49,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:07:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:07:49,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:07:49,384 INFO L87 Difference]: Start difference. First operand 102736 states and 423564 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 04:07:51,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:51,517 INFO L93 Difference]: Finished difference Result 117246 states and 482542 transitions. [2022-11-03 04:07:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:07:51,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2022-11-03 04:07:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:52,500 INFO L225 Difference]: With dead ends: 117246 [2022-11-03 04:07:52,500 INFO L226 Difference]: Without dead ends: 117054 [2022-11-03 04:07:52,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:07:52,502 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:52,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 80 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:07:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117054 states. [2022-11-03 04:07:56,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117054 to 105960. [2022-11-03 04:07:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105960 states, 105959 states have (on average 4.129295293462565) internal successors, (437536), 105959 states have internal predecessors, (437536), 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 04:07:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105960 states to 105960 states and 437536 transitions. [2022-11-03 04:07:58,622 INFO L78 Accepts]: Start accepts. Automaton has 105960 states and 437536 transitions. Word has length 69 [2022-11-03 04:07:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:58,622 INFO L495 AbstractCegarLoop]: Abstraction has 105960 states and 437536 transitions. [2022-11-03 04:07:58,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 04:07:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 105960 states and 437536 transitions. [2022-11-03 04:07:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 04:07:58,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:58,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:58,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:07:58,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-03 04:07:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -646046551, now seen corresponding path program 4 times [2022-11-03 04:07:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:58,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857300425] [2022-11-03 04:07:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:02,094 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 04:08:02,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:02,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857300425] [2022-11-03 04:08:02,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857300425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:02,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:02,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:08:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286873305] [2022-11-03 04:08:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 04:08:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:02,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 04:08:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:02,108 INFO L87 Difference]: Start difference. First operand 105960 states and 437536 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 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 04:08:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:05,033 INFO L93 Difference]: Finished difference Result 125212 states and 514783 transitions. [2022-11-03 04:08:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:08:05,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 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 69 [2022-11-03 04:08:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:05,869 INFO L225 Difference]: With dead ends: 125212 [2022-11-03 04:08:05,870 INFO L226 Difference]: Without dead ends: 125084 [2022-11-03 04:08:05,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:08:05,871 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 151 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:05,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 82 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:08:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125084 states. [2022-11-03 04:08:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125084 to 107304. [2022-11-03 04:08:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107304 states, 107303 states have (on average 4.127079392002088) internal successors, (442848), 107303 states have internal predecessors, (442848), 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)