./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a1d1149f676bf63a3b420effefd0eff28b85036d8f2ab9f39599a7a739fe76d --- 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-2329fc7 [2022-12-14 23:58:00,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 23:58:00,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 23:58:00,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 23:58:00,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 23:58:00,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 23:58:00,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 23:58:00,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 23:58:00,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 23:58:00,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 23:58:00,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 23:58:00,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 23:58:00,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 23:58:00,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 23:58:00,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 23:58:00,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 23:58:00,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 23:58:00,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 23:58:00,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 23:58:00,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 23:58:00,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 23:58:00,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 23:58:00,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 23:58:00,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 23:58:00,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 23:58:00,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 23:58:00,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 23:58:00,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 23:58:00,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 23:58:00,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 23:58:00,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 23:58:00,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 23:58:00,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 23:58:00,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 23:58:00,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 23:58:00,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 23:58:00,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 23:58:00,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 23:58:00,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 23:58:00,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 23:58:00,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 23:58:00,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-14 23:58:00,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 23:58:00,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 23:58:00,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 23:58:00,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 23:58:00,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 23:58:00,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 23:58:00,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 23:58:00,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 23:58:00,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 23:58:00,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 23:58:00,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 23:58:00,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 23:58:00,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 23:58:00,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 23:58:00,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 23:58:00,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 23:58:00,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 23:58:00,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 23:58:00,135 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 23:58:00,135 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 23:58:00,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 23:58:00,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 23:58:00,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 23:58:00,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 23:58:00,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 23:58:00,136 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 23:58:00,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 23:58:00,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 23:58:00,136 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_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a1d1149f676bf63a3b420effefd0eff28b85036d8f2ab9f39599a7a739fe76d [2022-12-14 23:58:00,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 23:58:00,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 23:58:00,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 23:58:00,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 23:58:00,332 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 23:58:00,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-12-14 23:58:02,927 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 23:58:03,084 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 23:58:03,085 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-12-14 23:58:03,094 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/data/10b201693/f723155de20d40fba56791969784e619/FLAG8263264d1 [2022-12-14 23:58:03,104 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/data/10b201693/f723155de20d40fba56791969784e619 [2022-12-14 23:58:03,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 23:58:03,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 23:58:03,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 23:58:03,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 23:58:03,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 23:58:03,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d45df43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03, skipping insertion in model container [2022-12-14 23:58:03,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 23:58:03,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 23:58:03,321 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_7f25b3b8-6825-4343-a8da-d23649ec4a6f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-12-14 23:58:03,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 23:58:03,403 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 23:58:03,455 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_7f25b3b8-6825-4343-a8da-d23649ec4a6f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-12-14 23:58:03,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 23:58:03,509 INFO L208 MainTranslator]: Completed translation [2022-12-14 23:58:03,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03 WrapperNode [2022-12-14 23:58:03,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 23:58:03,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 23:58:03,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 23:58:03,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 23:58:03,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,570 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 959 [2022-12-14 23:58:03,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 23:58:03,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 23:58:03,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 23:58:03,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 23:58:03,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 23:58:03,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 23:58:03,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 23:58:03,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 23:58:03,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:58:03" (1/1) ... [2022-12-14 23:58:03,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 23:58:03,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 23:58:03,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 23:58:03,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f25b3b8-6825-4343-a8da-d23649ec4a6f/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 23:58:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 23:58:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 23:58:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 23:58:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 23:58:03,813 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 23:58:03,815 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 23:58:04,368 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 23:58:04,499 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 23:58:04,499 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 23:58:04,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:58:04 BoogieIcfgContainer [2022-12-14 23:58:04,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 23:58:04,502 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 23:58:04,502 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 23:58:04,509 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 23:58:04,509 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:58:04" (1/1) ... [2022-12-14 23:58:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 23:58:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 198 states and 335 transitions. [2022-12-14 23:58:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 335 transitions. [2022-12-14 23:58:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 23:58:04,561 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 217 states and 371 transitions. [2022-12-14 23:58:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 371 transitions. [2022-12-14 23:58:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 23:58:05,459 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 229 states and 397 transitions. [2022-12-14 23:58:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 397 transitions. [2022-12-14 23:58:06,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 23:58:06,708 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 245 states and 433 transitions. [2022-12-14 23:58:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 433 transitions. [2022-12-14 23:58:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 23:58:08,634 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:08,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 265 states and 478 transitions. [2022-12-14 23:58:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 478 transitions. [2022-12-14 23:58:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 23:58:11,651 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 273 states and 498 transitions. [2022-12-14 23:58:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 498 transitions. [2022-12-14 23:58:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 23:58:16,337 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:16,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 277 states and 510 transitions. [2022-12-14 23:58:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 510 transitions. [2022-12-14 23:58:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 23:58:22,634 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:22,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:58:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:58:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 277 states and 509 transitions. [2022-12-14 23:58:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 509 transitions. [2022-12-14 23:58:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 23:58:31,160 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:58:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:58:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:58:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:59:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:59:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 313 states and 595 transitions. [2022-12-14 23:59:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 595 transitions. [2022-12-14 23:59:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 23:59:15,325 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:59:15,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:59:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:59:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:59:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:59:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 347 states and 681 transitions. [2022-12-14 23:59:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 681 transitions. [2022-12-14 23:59:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 23:59:47,720 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:59:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:59:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:59:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:00:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:00:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 379 states and 762 transitions. [2022-12-15 00:00:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 762 transitions. [2022-12-15 00:00:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:00:21,871 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:00:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:00:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:00:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:00:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:00:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 395 states and 801 transitions. [2022-12-15 00:00:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 801 transitions. [2022-12-15 00:00:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:00:46,638 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:00:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:00:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:00:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:01:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:01:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 407 states and 829 transitions. [2022-12-15 00:01:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 829 transitions. [2022-12-15 00:01:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:01:14,986 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:01:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:01:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:01:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:01:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:01:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 415 states and 847 transitions. [2022-12-15 00:01:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 847 transitions. [2022-12-15 00:01:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:01:52,560 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:01:52,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:01:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:01:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:02:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:02:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 439 states and 911 transitions. [2022-12-15 00:02:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 911 transitions. [2022-12-15 00:02:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:02:36,980 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:02:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:02:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:02:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:03:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:03:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 443 states and 919 transitions. [2022-12-15 00:03:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 919 transitions. [2022-12-15 00:03:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:03:21,246 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:03:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:03:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:03:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:04:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:04:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 470 states and 991 transitions. [2022-12-15 00:04:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 991 transitions. [2022-12-15 00:04:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:04:16,832 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:04:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:04:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:04:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:05:14,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:05:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 467 states and 972 transitions. [2022-12-15 00:05:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 972 transitions. [2022-12-15 00:05:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-15 00:05:14,345 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:05:14,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:05:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:05:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:06:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:06:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 487 states and 1019 transitions. [2022-12-15 00:06:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1019 transitions. [2022-12-15 00:06:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:06:25,022 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:06:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:06:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:06:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:06:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:06:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 490 states and 1027 transitions. [2022-12-15 00:06:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1027 transitions. [2022-12-15 00:06:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:06:31,878 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:06:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:06:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:06:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:06:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:06:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 493 states and 1033 transitions. [2022-12-15 00:06:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 1033 transitions. [2022-12-15 00:06:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:06:37,810 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:06:37,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:06:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:06:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:06:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:06:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 496 states and 1040 transitions. [2022-12-15 00:06:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1040 transitions. [2022-12-15 00:06:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:06:43,664 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:06:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:06:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:06:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:06:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:06:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 499 states and 1048 transitions. [2022-12-15 00:06:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1048 transitions. [2022-12-15 00:06:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:06:49,394 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:06:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:06:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:06:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:06:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:06:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 502 states and 1054 transitions. [2022-12-15 00:06:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1054 transitions. [2022-12-15 00:06:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:06:55,569 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:06:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:06:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:06:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 505 states and 1060 transitions. [2022-12-15 00:07:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1060 transitions. [2022-12-15 00:07:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:02,369 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:02,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 508 states and 1072 transitions. [2022-12-15 00:07:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1072 transitions. [2022-12-15 00:07:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:08,374 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 511 states and 1082 transitions. [2022-12-15 00:07:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1082 transitions. [2022-12-15 00:07:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:14,498 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 514 states and 1088 transitions. [2022-12-15 00:07:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1088 transitions. [2022-12-15 00:07:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:20,250 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:20,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 517 states and 1094 transitions. [2022-12-15 00:07:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1094 transitions. [2022-12-15 00:07:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:26,081 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 513 states and 1079 transitions. [2022-12-15 00:07:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 1079 transitions. [2022-12-15 00:07:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:31,802 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:31,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 508 states and 1066 transitions. [2022-12-15 00:07:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1066 transitions. [2022-12-15 00:07:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:37,795 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 504 states and 1055 transitions. [2022-12-15 00:07:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1055 transitions. [2022-12-15 00:07:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:44,287 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 498 states and 1041 transitions. [2022-12-15 00:07:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1041 transitions. [2022-12-15 00:07:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-15 00:07:50,475 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:50,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:07:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:07:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 484 states and 997 transitions. [2022-12-15 00:07:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 997 transitions. [2022-12-15 00:07:56,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:07:56,175 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:07:56,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:07:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:07:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:08:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:08:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 487 states and 1007 transitions. [2022-12-15 00:08:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1007 transitions. [2022-12-15 00:08:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:08:03,117 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:08:03,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:08:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:08:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:08:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:08:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 509 states and 1064 transitions. [2022-12-15 00:08:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 1064 transitions. [2022-12-15 00:08:57,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:08:57,368 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:08:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:08:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:08:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:09:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:09:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 513 states and 1075 transitions. [2022-12-15 00:09:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 1075 transitions. [2022-12-15 00:09:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:09:00,777 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:09:00,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:09:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:09:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:09:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:09:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 529 states and 1111 transitions. [2022-12-15 00:09:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1111 transitions. [2022-12-15 00:09:42,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:09:42,240 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:09:42,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:09:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:09:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:12:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:12:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 566 states and 1206 transitions. [2022-12-15 00:12:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1206 transitions. [2022-12-15 00:12:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:12:14,047 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:12:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:12:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:12:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:12:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:12:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 570 states and 1217 transitions. [2022-12-15 00:12:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1217 transitions. [2022-12-15 00:12:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:12:21,236 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:12:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:12:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:12:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:12:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:12:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 573 states and 1224 transitions. [2022-12-15 00:12:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1224 transitions. [2022-12-15 00:12:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:12:26,382 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:12:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:12:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:12:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-15 00:12:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:12:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 584 states and 1252 transitions. [2022-12-15 00:12:47,589 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1252 transitions. [2022-12-15 00:12:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-15 00:12:47,589 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:12:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:12:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:13:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.