./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:31:47,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:31:47,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:31:47,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:31:47,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:31:47,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:31:47,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:31:47,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:31:47,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:31:47,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:31:47,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:31:47,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:31:47,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:31:47,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:31:47,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:31:47,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:31:47,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:31:47,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:31:47,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:31:47,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:31:47,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:31:47,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:31:47,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:31:47,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:31:47,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:31:47,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:31:47,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:31:47,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:31:47,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:31:47,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:31:47,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:31:47,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:31:47,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:31:47,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:31:47,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:31:47,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:31:47,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:31:47,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:31:47,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:31:47,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:31:47,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:31:47,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:31:47,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:31:47,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:31:47,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:31:47,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:31:47,188 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:31:47,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:31:47,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:31:47,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:31:47,195 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:31:47,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:31:47,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:31:47,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:31:47,196 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:31:47,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:31:47,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:31:47,197 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:31:47,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:31:47,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:31:47,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:31:47,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:31:47,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:31:47,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:31:47,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:31:47,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:31:47,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:31:47,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:31:47,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:31:47,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:31:47,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:31:47,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:31:47,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:31:47,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:31:47,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:31:47,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:31:47,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:31:47,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:31:47,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:31:47,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:31:47,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:31:47,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:31:47,205 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2021-11-13 02:31:47,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:31:47,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:31:47,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:31:47,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:31:47,528 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:31:47,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2021-11-13 02:31:47,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/data/285624e81/15c334e64be74b21a8514117883cd950/FLAG72845e685 [2021-11-13 02:31:48,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:31:48,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/sv-benchmarks/c/pthread-atomic/szymanski.i [2021-11-13 02:31:48,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/data/285624e81/15c334e64be74b21a8514117883cd950/FLAG72845e685 [2021-11-13 02:31:48,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/data/285624e81/15c334e64be74b21a8514117883cd950 [2021-11-13 02:31:48,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:31:48,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:31:48,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:31:48,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:31:48,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:31:48,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:48" (1/1) ... [2021-11-13 02:31:48,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9f1391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:48, skipping insertion in model container [2021-11-13 02:31:48,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:48" (1/1) ... [2021-11-13 02:31:48,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:31:48,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:31:48,747 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-13 02:31:48,885 WARN L228 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_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-11-13 02:31:48,893 WARN L228 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_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-11-13 02:31:48,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:31:48,907 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:31:48,921 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-13 02:31:48,945 WARN L228 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_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-11-13 02:31:48,949 WARN L228 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_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-11-13 02:31:48,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:31:49,006 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:31:49,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49 WrapperNode [2021-11-13 02:31:49,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:31:49,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:31:49,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:31:49,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:31:49,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:31:49,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:31:49,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:31:49,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:31:49,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:31:49,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:31:49,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:31:49,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:31:49,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (1/1) ... [2021-11-13 02:31:49,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:31:49,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:31:49,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:31:49,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:31:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 02:31:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-11-13 02:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-11-13 02:31:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-13 02:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-13 02:31:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 02:31:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 02:31:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:31:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:31:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:31:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 02:31:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:31:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:31:49,240 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 02:31:49,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:31:49,571 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-13 02:31:49,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:49 BoogieIcfgContainer [2021-11-13 02:31:49,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:31:49,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:31:49,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:31:49,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:31:49,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:31:48" (1/3) ... [2021-11-13 02:31:49,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477861f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:31:49, skipping insertion in model container [2021-11-13 02:31:49,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:49" (2/3) ... [2021-11-13 02:31:49,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477861f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:31:49, skipping insertion in model container [2021-11-13 02:31:49,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:49" (3/3) ... [2021-11-13 02:31:49,597 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-11-13 02:31:49,602 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 02:31:49,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:31:49,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 02:31:49,603 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 02:31:49,659 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,659 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,660 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,660 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,660 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,661 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,661 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,661 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,661 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,662 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,662 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,662 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,662 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,663 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,663 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,663 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,664 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,664 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,664 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,664 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,665 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,665 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,665 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,667 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,667 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,667 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,668 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,668 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,668 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,668 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,669 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,669 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,669 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,669 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,670 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,670 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,671 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,671 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,671 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,671 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,672 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,672 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,672 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,672 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,673 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,673 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,674 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,674 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,674 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,675 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,675 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,675 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,675 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,676 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,676 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,676 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,677 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,677 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,677 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,677 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,678 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,678 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,678 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,679 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,679 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,679 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,679 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,680 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,680 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,680 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,681 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,681 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,681 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,681 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,682 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,682 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,682 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,682 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,684 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,684 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,684 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,684 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,685 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,685 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,685 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,686 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,686 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,686 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,686 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,687 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,687 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,687 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,688 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,688 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,688 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,691 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,692 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,692 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,692 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,692 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,696 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,696 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,696 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,697 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,697 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:31:49,700 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-13 02:31:49,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:31:49,753 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:31:49,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 02:31:49,769 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:31:49,781 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 117 transitions, 250 flow [2021-11-13 02:31:49,783 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 117 transitions, 250 flow [2021-11-13 02:31:49,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 117 transitions, 250 flow [2021-11-13 02:31:49,835 INFO L129 PetriNetUnfolder]: 20/115 cut-off events. [2021-11-13 02:31:49,836 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 02:31:49,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 20/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-11-13 02:31:49,847 INFO L116 LiptonReduction]: Number of co-enabled transitions 3672 [2021-11-13 02:31:52,613 INFO L131 LiptonReduction]: Checked pairs total: 7913 [2021-11-13 02:31:52,613 INFO L133 LiptonReduction]: Total number of compositions: 84 [2021-11-13 02:31:52,622 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 49 transitions, 114 flow [2021-11-13 02:31:52,665 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 488 states, 485 states have (on average 2.952577319587629) internal successors, (1432), 487 states have internal predecessors, (1432), 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) [2021-11-13 02:31:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 488 states, 485 states have (on average 2.952577319587629) internal successors, (1432), 487 states have internal predecessors, (1432), 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) [2021-11-13 02:31:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:31:52,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:52,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:52,680 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 02:31:52,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1716386203, now seen corresponding path program 1 times [2021-11-13 02:31:52,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:31:52,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055103761] [2021-11-13 02:31:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:52,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:31:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:31:52,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:31:52,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055103761] [2021-11-13 02:31:52,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055103761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:52,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:52,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:31:52,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465625928] [2021-11-13 02:31:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:52,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:31:52,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:31:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:31:52,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:52,912 INFO L87 Difference]: Start difference. First operand has 488 states, 485 states have (on average 2.952577319587629) internal successors, (1432), 487 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:53,047 INFO L93 Difference]: Finished difference Result 492 states and 1411 transitions. [2021-11-13 02:31:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:31:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:31:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:53,074 INFO L225 Difference]: With dead ends: 492 [2021-11-13 02:31:53,075 INFO L226 Difference]: Without dead ends: 426 [2021-11-13 02:31:53,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:53,080 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:53,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 20 Invalid, 58 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 73.01ms Time] [2021-11-13 02:31:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-13 02:31:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 410. [2021-11-13 02:31:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 406 states have (on average 2.9014778325123154) internal successors, (1178), 409 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1178 transitions. [2021-11-13 02:31:53,186 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1178 transitions. Word has length 10 [2021-11-13 02:31:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:53,187 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1178 transitions. [2021-11-13 02:31:53,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1178 transitions. [2021-11-13 02:31:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:31:53,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:53,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:53,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:31:53,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 02:31:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1507559169, now seen corresponding path program 1 times [2021-11-13 02:31:53,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:31:53,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730644261] [2021-11-13 02:31:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:53,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:31:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:31:53,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:31:53,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730644261] [2021-11-13 02:31:53,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730644261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:53,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:53,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:31:53,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499278136] [2021-11-13 02:31:53,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:53,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:31:53,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:31:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:31:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:53,321 INFO L87 Difference]: Start difference. First operand 410 states and 1178 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:53,407 INFO L93 Difference]: Finished difference Result 394 states and 1121 transitions. [2021-11-13 02:31:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:31:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:31:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:53,414 INFO L225 Difference]: With dead ends: 394 [2021-11-13 02:31:53,414 INFO L226 Difference]: Without dead ends: 300 [2021-11-13 02:31:53,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:53,416 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.78ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:53,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 79 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 65.78ms Time] [2021-11-13 02:31:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-13 02:31:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-13 02:31:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 2.885135135135135) internal successors, (854), 299 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 854 transitions. [2021-11-13 02:31:53,429 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 854 transitions. Word has length 12 [2021-11-13 02:31:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:53,430 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 854 transitions. [2021-11-13 02:31:53,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 854 transitions. [2021-11-13 02:31:53,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:31:53,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:53,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:53,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:31:53,434 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 02:31:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash 530798055, now seen corresponding path program 1 times [2021-11-13 02:31:53,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:31:53,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465504166] [2021-11-13 02:31:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:53,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:31:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:31:53,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:31:53,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465504166] [2021-11-13 02:31:53,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465504166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:53,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:53,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:31:53,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541813592] [2021-11-13 02:31:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:53,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:31:53,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:31:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:31:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:31:53,504 INFO L87 Difference]: Start difference. First operand 300 states and 854 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:53,640 INFO L93 Difference]: Finished difference Result 346 states and 965 transitions. [2021-11-13 02:31:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:31:53,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 02:31:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:53,646 INFO L225 Difference]: With dead ends: 346 [2021-11-13 02:31:53,646 INFO L226 Difference]: Without dead ends: 256 [2021-11-13 02:31:53,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:31:53,650 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:53,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 35 Invalid, 155 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [20 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 116.89ms Time] [2021-11-13 02:31:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-13 02:31:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 240. [2021-11-13 02:31:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 2.707627118644068) internal successors, (639), 239 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 639 transitions. [2021-11-13 02:31:53,678 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 639 transitions. Word has length 19 [2021-11-13 02:31:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 639 transitions. [2021-11-13 02:31:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 639 transitions. [2021-11-13 02:31:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:31:53,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:53,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:53,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:31:53,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 02:31:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1557078075, now seen corresponding path program 2 times [2021-11-13 02:31:53,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:31:53,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266532026] [2021-11-13 02:31:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:53,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:31:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:31:53,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:31:53,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266532026] [2021-11-13 02:31:53,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266532026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:53,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:53,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:31:53,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137793568] [2021-11-13 02:31:53,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:53,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:31:53,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:31:53,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:31:53,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:31:53,758 INFO L87 Difference]: Start difference. First operand 240 states and 639 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:53,886 INFO L93 Difference]: Finished difference Result 302 states and 798 transitions. [2021-11-13 02:31:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:31:53,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 02:31:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:53,889 INFO L225 Difference]: With dead ends: 302 [2021-11-13 02:31:53,890 INFO L226 Difference]: Without dead ends: 266 [2021-11-13 02:31:53,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:31:53,891 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:53,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 35 Invalid, 156 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [21 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 99.42ms Time] [2021-11-13 02:31:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-13 02:31:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 236. [2021-11-13 02:31:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 2.663793103448276) internal successors, (618), 235 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 618 transitions. [2021-11-13 02:31:53,902 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 618 transitions. Word has length 19 [2021-11-13 02:31:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:53,903 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 618 transitions. [2021-11-13 02:31:53,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 618 transitions. [2021-11-13 02:31:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:31:53,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:53,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:53,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:31:53,905 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 02:31:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1028860509, now seen corresponding path program 1 times [2021-11-13 02:31:53,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:31:53,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683335076] [2021-11-13 02:31:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:53,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:31:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:31:53,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:31:53,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683335076] [2021-11-13 02:31:53,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683335076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:53,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:53,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:31:53,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677133761] [2021-11-13 02:31:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:53,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:31:53,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:31:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:31:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:53,946 INFO L87 Difference]: Start difference. First operand 236 states and 618 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:54,013 INFO L93 Difference]: Finished difference Result 266 states and 697 transitions. [2021-11-13 02:31:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:31:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 02:31:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:54,016 INFO L225 Difference]: With dead ends: 266 [2021-11-13 02:31:54,016 INFO L226 Difference]: Without dead ends: 266 [2021-11-13 02:31:54,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:54,017 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.94ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:54,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 84 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 59.94ms Time] [2021-11-13 02:31:54,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-13 02:31:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 236. [2021-11-13 02:31:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 2.646551724137931) internal successors, (614), 235 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 614 transitions. [2021-11-13 02:31:54,028 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 614 transitions. Word has length 19 [2021-11-13 02:31:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:54,029 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 614 transitions. [2021-11-13 02:31:54,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 614 transitions. [2021-11-13 02:31:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:31:54,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:54,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:54,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:31:54,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 02:31:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash -23960931, now seen corresponding path program 2 times [2021-11-13 02:31:54,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:31:54,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43334410] [2021-11-13 02:31:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:54,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:31:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:31:54,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:31:54,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43334410] [2021-11-13 02:31:54,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43334410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:54,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:54,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:31:54,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427541583] [2021-11-13 02:31:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:54,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:31:54,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:31:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:31:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:31:54,110 INFO L87 Difference]: Start difference. First operand 236 states and 614 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:54,182 INFO L93 Difference]: Finished difference Result 222 states and 599 transitions. [2021-11-13 02:31:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:31:54,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 02:31:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:54,182 INFO L225 Difference]: With dead ends: 222 [2021-11-13 02:31:54,183 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 02:31:54,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:31:54,184 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:54,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 25 Invalid, 101 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 58.53ms Time] [2021-11-13 02:31:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 02:31:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 02:31:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 02:31:54,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-13 02:31:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:54,186 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 02:31:54,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:31:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 02:31:54,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 02:31:54,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 02:31:54,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 02:31:54,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 02:31:54,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 02:31:54,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-13 02:31:54,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 02:31:54,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 02:31:54,192 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2021-11-13 02:31:54,195 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 02:31:54,196 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:31:54,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:31:54 BasicIcfg [2021-11-13 02:31:54,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:31:54,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:31:54,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:31:54,199 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:31:54,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:49" (3/4) ... [2021-11-13 02:31:54,203 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 02:31:54,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-11-13 02:31:54,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-11-13 02:31:54,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-13 02:31:54,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 02:31:54,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 02:31:54,217 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 02:31:54,248 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:31:54,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:31:54,249 INFO L158 Benchmark]: Toolchain (without parser) took 5758.78ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-11-13 02:31:54,250 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 132.1MB. Free memory was 102.7MB in the beginning and 102.7MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:31:54,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.66ms. Allocated memory is still 132.1MB. Free memory was 93.6MB in the beginning and 96.3MB in the end (delta: -2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 02:31:54,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.35ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:31:54,251 INFO L158 Benchmark]: Boogie Preprocessor took 65.13ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 92.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:31:54,251 INFO L158 Benchmark]: RCFGBuilder took 431.09ms. Allocated memory is still 132.1MB. Free memory was 92.9MB in the beginning and 79.6MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:31:54,251 INFO L158 Benchmark]: TraceAbstraction took 4622.47ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 78.8MB in the beginning and 94.9MB in the end (delta: -16.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-13 02:31:54,252 INFO L158 Benchmark]: Witness Printer took 49.57ms. Allocated memory is still 159.4MB. Free memory was 94.9MB in the beginning and 92.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:31:54,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 132.1MB. Free memory was 102.7MB in the beginning and 102.7MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.66ms. Allocated memory is still 132.1MB. Free memory was 93.6MB in the beginning and 96.3MB in the end (delta: -2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.35ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.13ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 92.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 431.09ms. Allocated memory is still 132.1MB. Free memory was 92.9MB in the beginning and 79.6MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4622.47ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 78.8MB in the beginning and 94.9MB in the end (delta: -16.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Witness Printer took 49.57ms. Allocated memory is still 159.4MB. Free memory was 94.9MB in the beginning and 92.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 104 PlacesBefore, 46 PlacesAfterwards, 117 TransitionsBefore, 49 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 10 ChoiceCompositions, 84 TotalNumberOfCompositions, 7913 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3701, positive: 3479, positive conditional: 0, positive unconditional: 3479, negative: 222, negative conditional: 0, negative unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2177, positive: 2129, positive conditional: 0, positive unconditional: 2129, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2177, positive: 2119, positive conditional: 0, positive unconditional: 2119, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 58, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 81, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3701, positive: 1350, positive conditional: 0, positive unconditional: 1350, negative: 174, negative conditional: 0, negative unconditional: 174, unknown: 2177, unknown conditional: 0, unknown unconditional: 2177] , Statistics on independence cache: Total cache size (in pairs): 262, Positive cache size: 225, Positive conditional cache size: 0, Positive unconditional cache size: 225, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 154 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 473.58ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 192 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 371.16ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 573 IncrementalHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 95 mSDtfsCounter, 573 mSolverCounterSat, 16.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 92 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-13 02:31:54,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f4e0f8-d805-4888-a2d0-f5df5d6a7daa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE