./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan --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 740b07d8f7e077f103517b1a935019a0d1d4c771 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 16:28:25,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:28:25,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:28:25,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:28:25,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:28:25,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:28:25,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:28:25,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:28:25,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:28:25,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:28:25,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:28:25,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:28:25,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:28:25,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:28:25,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:28:25,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:28:25,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:28:25,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:28:25,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:28:25,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:28:25,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:28:25,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:28:25,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:28:25,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:28:25,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:28:25,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:28:25,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:28:25,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:28:25,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:28:25,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:28:25,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:28:25,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:28:25,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:28:25,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:28:25,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:28:25,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:28:25,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:28:25,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:28:25,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:28:25,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:28:25,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:28:25,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:28:25,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:28:25,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:28:25,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:28:25,377 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:28:25,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:28:25,377 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:28:25,377 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:28:25,378 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:28:25,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:28:25,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:28:25,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:28:25,378 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:28:25,378 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:28:25,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:28:25,379 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:28:25,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:28:25,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:28:25,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:28:25,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:28:25,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:28:25,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:28:25,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:28:25,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:28:25,381 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:28:25,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:28:25,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:28:25,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:28:25,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:28:25,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:28:25,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:28:25,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:28:25,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:28:25,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:28:25,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:28:25,383 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:28:25,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:28:25,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:28:25,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:28:25,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:28:25,384 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-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 740b07d8f7e077f103517b1a935019a0d1d4c771 [2020-12-09 16:28:25,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:28:25,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:28:25,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:28:25,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:28:25,598 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:28:25,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2020-12-09 16:28:25,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/data/062db748b/c8cd242b42834c52b99fe0836473a561/FLAG6a50cbc9d [2020-12-09 16:28:26,079 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:28:26,079 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2020-12-09 16:28:26,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/data/062db748b/c8cd242b42834c52b99fe0836473a561/FLAG6a50cbc9d [2020-12-09 16:28:26,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/data/062db748b/c8cd242b42834c52b99fe0836473a561 [2020-12-09 16:28:26,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:28:26,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:28:26,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:28:26,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:28:26,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:28:26,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697e2121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26, skipping insertion in model container [2020-12-09 16:28:26,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:28:26,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:28:26,268 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-09 16:28:26,349 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2020-12-09 16:28:26,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:28:26,360 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:28:26,371 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-09 16:28:26,388 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2020-12-09 16:28:26,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:28:26,440 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:28:26,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26 WrapperNode [2020-12-09 16:28:26,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:28:26,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:28:26,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:28:26,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:28:26,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:28:26,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:28:26,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:28:26,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:28:26,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... [2020-12-09 16:28:26,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:28:26,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:28:26,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:28:26,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:28:26,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:28:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 16:28:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 16:28:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 16:28:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-12-09 16:28:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-12-09 16:28:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:28:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 16:28:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:28:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 16:28:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:28:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:28:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-12-09 16:28:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-12-09 16:28:26,558 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 16:28:26,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:28:26,851 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 16:28:26,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:28:26 BoogieIcfgContainer [2020-12-09 16:28:26,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:28:26,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:28:26,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:28:26,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:28:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:28:26" (1/3) ... [2020-12-09 16:28:26,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcb271d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:28:26, skipping insertion in model container [2020-12-09 16:28:26,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:28:26" (2/3) ... [2020-12-09 16:28:26,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcb271d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:28:26, skipping insertion in model container [2020-12-09 16:28:26,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:28:26" (3/3) ... [2020-12-09 16:28:26,861 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-12-09 16:28:26,874 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 16:28:26,874 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:28:26,877 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:28:26,877 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 16:28:26,903 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,903 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,903 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,903 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,904 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,904 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,904 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,904 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,904 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,904 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,905 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,905 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,908 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,911 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,911 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,914 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,914 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,914 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,914 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,914 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,915 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,915 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,915 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,915 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,917 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,917 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,918 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,918 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,919 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,919 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,919 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,919 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,919 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,919 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,920 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,920 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,920 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,920 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,920 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,921 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,923 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,923 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,923 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,930 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,930 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,930 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,931 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,931 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,931 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,933 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,933 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,933 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,934 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,934 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,934 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,935 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,935 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,936 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,938 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,938 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,938 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,938 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,939 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,939 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:28:26,951 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2020-12-09 16:28:26,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 16:28:26,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:28:26,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:28:26,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:28:26,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:28:26,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:28:26,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:28:26,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:28:26,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:28:26,995 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 16:28:26,997 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 108 transitions, 284 flow [2020-12-09 16:28:27,000 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 108 transitions, 284 flow [2020-12-09 16:28:27,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 284 flow [2020-12-09 16:28:27,055 INFO L129 PetriNetUnfolder]: 19/142 cut-off events. [2020-12-09 16:28:27,056 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-12-09 16:28:27,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 142 events. 19/142 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 322 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 95. Up to 12 conditions per place. [2020-12-09 16:28:27,067 INFO L116 LiptonReduction]: Number of co-enabled transitions 2808 [2020-12-09 16:28:29,359 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-09 16:28:29,502 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-09 16:28:29,835 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-09 16:28:30,027 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-09 16:28:30,072 INFO L131 LiptonReduction]: Checked pairs total: 19420 [2020-12-09 16:28:30,072 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-12-09 16:28:30,076 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 59 transitions, 186 flow [2020-12-09 16:28:30,348 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5381 states. [2020-12-09 16:28:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states. [2020-12-09 16:28:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 16:28:30,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:30,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:30,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:30,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1915623268, now seen corresponding path program 1 times [2020-12-09 16:28:30,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:30,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164124555] [2020-12-09 16:28:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:30,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164124555] [2020-12-09 16:28:30,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:30,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:28:30,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103267054] [2020-12-09 16:28:30,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:28:30,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:28:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:30,548 INFO L87 Difference]: Start difference. First operand 5381 states. Second operand 5 states. [2020-12-09 16:28:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:30,770 INFO L93 Difference]: Finished difference Result 12590 states and 42232 transitions. [2020-12-09 16:28:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 16:28:30,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 16:28:30,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:30,852 INFO L225 Difference]: With dead ends: 12590 [2020-12-09 16:28:30,852 INFO L226 Difference]: Without dead ends: 9892 [2020-12-09 16:28:30,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:28:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2020-12-09 16:28:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 5970. [2020-12-09 16:28:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5970 states. [2020-12-09 16:28:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20851 transitions. [2020-12-09 16:28:31,133 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20851 transitions. Word has length 9 [2020-12-09 16:28:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:31,133 INFO L481 AbstractCegarLoop]: Abstraction has 5970 states and 20851 transitions. [2020-12-09 16:28:31,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:28:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20851 transitions. [2020-12-09 16:28:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 16:28:31,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:31,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:31,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:28:31,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:31,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:31,136 INFO L82 PathProgramCache]: Analyzing trace with hash -195792886, now seen corresponding path program 1 times [2020-12-09 16:28:31,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:31,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692006334] [2020-12-09 16:28:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:31,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692006334] [2020-12-09 16:28:31,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:31,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:28:31,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295315343] [2020-12-09 16:28:31,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:28:31,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:31,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:28:31,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:28:31,186 INFO L87 Difference]: Start difference. First operand 5970 states and 20851 transitions. Second operand 3 states. [2020-12-09 16:28:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:31,285 INFO L93 Difference]: Finished difference Result 5110 states and 15907 transitions. [2020-12-09 16:28:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:28:31,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-09 16:28:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:31,328 INFO L225 Difference]: With dead ends: 5110 [2020-12-09 16:28:31,328 INFO L226 Difference]: Without dead ends: 5078 [2020-12-09 16:28:31,329 INFO L677 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 [2020-12-09 16:28:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2020-12-09 16:28:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5078. [2020-12-09 16:28:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-12-09 16:28:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 15825 transitions. [2020-12-09 16:28:31,498 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 15825 transitions. Word has length 11 [2020-12-09 16:28:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:31,498 INFO L481 AbstractCegarLoop]: Abstraction has 5078 states and 15825 transitions. [2020-12-09 16:28:31,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:28:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 15825 transitions. [2020-12-09 16:28:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 16:28:31,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:31,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:31,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:28:31,501 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1266155686, now seen corresponding path program 2 times [2020-12-09 16:28:31,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:31,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355588014] [2020-12-09 16:28:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:31,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355588014] [2020-12-09 16:28:31,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:31,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:28:31,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815142466] [2020-12-09 16:28:31,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:28:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:28:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:28:31,562 INFO L87 Difference]: Start difference. First operand 5078 states and 15825 transitions. Second operand 4 states. [2020-12-09 16:28:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:31,676 INFO L93 Difference]: Finished difference Result 7034 states and 20696 transitions. [2020-12-09 16:28:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:28:31,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 16:28:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:31,701 INFO L225 Difference]: With dead ends: 7034 [2020-12-09 16:28:31,701 INFO L226 Difference]: Without dead ends: 6904 [2020-12-09 16:28:31,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2020-12-09 16:28:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 5028. [2020-12-09 16:28:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5028 states. [2020-12-09 16:28:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 15627 transitions. [2020-12-09 16:28:31,892 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 15627 transitions. Word has length 11 [2020-12-09 16:28:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:31,893 INFO L481 AbstractCegarLoop]: Abstraction has 5028 states and 15627 transitions. [2020-12-09 16:28:31,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:28:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 15627 transitions. [2020-12-09 16:28:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 16:28:31,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:31,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:31,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:28:31,895 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:31,895 INFO L82 PathProgramCache]: Analyzing trace with hash -2100626013, now seen corresponding path program 1 times [2020-12-09 16:28:31,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:31,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455295455] [2020-12-09 16:28:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:31,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455295455] [2020-12-09 16:28:31,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:31,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:28:31,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809756782] [2020-12-09 16:28:31,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:28:31,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:31,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:28:31,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:31,946 INFO L87 Difference]: Start difference. First operand 5028 states and 15627 transitions. Second operand 5 states. [2020-12-09 16:28:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:32,092 INFO L93 Difference]: Finished difference Result 10443 states and 31252 transitions. [2020-12-09 16:28:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:28:32,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 16:28:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:32,122 INFO L225 Difference]: With dead ends: 10443 [2020-12-09 16:28:32,122 INFO L226 Difference]: Without dead ends: 9661 [2020-12-09 16:28:32,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:28:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9661 states. [2020-12-09 16:28:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9661 to 5905. [2020-12-09 16:28:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5905 states. [2020-12-09 16:28:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 18595 transitions. [2020-12-09 16:28:32,309 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 18595 transitions. Word has length 13 [2020-12-09 16:28:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:32,310 INFO L481 AbstractCegarLoop]: Abstraction has 5905 states and 18595 transitions. [2020-12-09 16:28:32,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:28:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 18595 transitions. [2020-12-09 16:28:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 16:28:32,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:32,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:32,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:28:32,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:32,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1395303918, now seen corresponding path program 1 times [2020-12-09 16:28:32,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:32,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651738052] [2020-12-09 16:28:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:32,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651738052] [2020-12-09 16:28:32,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:32,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:28:32,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161586390] [2020-12-09 16:28:32,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:28:32,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:32,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:28:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:32,351 INFO L87 Difference]: Start difference. First operand 5905 states and 18595 transitions. Second operand 5 states. [2020-12-09 16:28:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:32,393 INFO L93 Difference]: Finished difference Result 3057 states and 7829 transitions. [2020-12-09 16:28:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:28:32,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 16:28:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:32,398 INFO L225 Difference]: With dead ends: 3057 [2020-12-09 16:28:32,398 INFO L226 Difference]: Without dead ends: 3057 [2020-12-09 16:28:32,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:28:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2020-12-09 16:28:32,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2611. [2020-12-09 16:28:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-12-09 16:28:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 6739 transitions. [2020-12-09 16:28:32,445 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 6739 transitions. Word has length 16 [2020-12-09 16:28:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:32,445 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 6739 transitions. [2020-12-09 16:28:32,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:28:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 6739 transitions. [2020-12-09 16:28:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 16:28:32,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:32,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:32,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 16:28:32,446 INFO L429 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:32,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1096397811, now seen corresponding path program 1 times [2020-12-09 16:28:32,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:32,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121992968] [2020-12-09 16:28:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:32,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121992968] [2020-12-09 16:28:32,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:32,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:28:32,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450446805] [2020-12-09 16:28:32,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:28:32,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:28:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:32,479 INFO L87 Difference]: Start difference. First operand 2611 states and 6739 transitions. Second operand 5 states. [2020-12-09 16:28:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:32,545 INFO L93 Difference]: Finished difference Result 3334 states and 8400 transitions. [2020-12-09 16:28:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:28:32,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 16:28:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:32,548 INFO L225 Difference]: With dead ends: 3334 [2020-12-09 16:28:32,548 INFO L226 Difference]: Without dead ends: 3189 [2020-12-09 16:28:32,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:28:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-12-09 16:28:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2338. [2020-12-09 16:28:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2338 states. [2020-12-09 16:28:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 5998 transitions. [2020-12-09 16:28:32,595 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 5998 transitions. Word has length 16 [2020-12-09 16:28:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:32,595 INFO L481 AbstractCegarLoop]: Abstraction has 2338 states and 5998 transitions. [2020-12-09 16:28:32,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:28:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 5998 transitions. [2020-12-09 16:28:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 16:28:32,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:32,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:32,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 16:28:32,597 INFO L429 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1108420364, now seen corresponding path program 1 times [2020-12-09 16:28:32,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:32,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377171724] [2020-12-09 16:28:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:32,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377171724] [2020-12-09 16:28:32,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:32,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:28:32,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740891883] [2020-12-09 16:28:32,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:28:32,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:32,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:28:32,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:32,625 INFO L87 Difference]: Start difference. First operand 2338 states and 5998 transitions. Second operand 5 states. [2020-12-09 16:28:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:32,710 INFO L93 Difference]: Finished difference Result 2977 states and 7534 transitions. [2020-12-09 16:28:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 16:28:32,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 16:28:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:32,713 INFO L225 Difference]: With dead ends: 2977 [2020-12-09 16:28:32,714 INFO L226 Difference]: Without dead ends: 2697 [2020-12-09 16:28:32,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:28:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2020-12-09 16:28:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 1918. [2020-12-09 16:28:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-12-09 16:28:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 4913 transitions. [2020-12-09 16:28:32,756 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 4913 transitions. Word has length 16 [2020-12-09 16:28:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:32,756 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 4913 transitions. [2020-12-09 16:28:32,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:28:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 4913 transitions. [2020-12-09 16:28:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 16:28:32,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:32,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:32,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 16:28:32,759 INFO L429 AbstractCegarLoop]: === Iteration 8 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash 940983690, now seen corresponding path program 1 times [2020-12-09 16:28:32,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:32,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609222308] [2020-12-09 16:28:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:32,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609222308] [2020-12-09 16:28:32,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:32,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 16:28:32,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720568245] [2020-12-09 16:28:32,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:28:32,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:32,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:28:32,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:28:32,802 INFO L87 Difference]: Start difference. First operand 1918 states and 4913 transitions. Second operand 6 states. [2020-12-09 16:28:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:32,856 INFO L93 Difference]: Finished difference Result 2310 states and 5767 transitions. [2020-12-09 16:28:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:28:32,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-09 16:28:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:32,858 INFO L225 Difference]: With dead ends: 2310 [2020-12-09 16:28:32,858 INFO L226 Difference]: Without dead ends: 1806 [2020-12-09 16:28:32,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:28:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-12-09 16:28:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1630. [2020-12-09 16:28:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-12-09 16:28:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 4025 transitions. [2020-12-09 16:28:32,879 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 4025 transitions. Word has length 21 [2020-12-09 16:28:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:32,879 INFO L481 AbstractCegarLoop]: Abstraction has 1630 states and 4025 transitions. [2020-12-09 16:28:32,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:28:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 4025 transitions. [2020-12-09 16:28:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 16:28:32,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:28:32,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:28:32,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 16:28:32,881 INFO L429 AbstractCegarLoop]: === Iteration 9 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 16:28:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:28:32,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2040940762, now seen corresponding path program 1 times [2020-12-09 16:28:32,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:28:32,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802936774] [2020-12-09 16:28:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:28:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:28:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:28:32,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802936774] [2020-12-09 16:28:32,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:28:32,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:28:32,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2758881] [2020-12-09 16:28:32,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:28:32,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:28:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:28:32,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:28:32,915 INFO L87 Difference]: Start difference. First operand 1630 states and 4025 transitions. Second operand 5 states. [2020-12-09 16:28:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:28:32,932 INFO L93 Difference]: Finished difference Result 502 states and 911 transitions. [2020-12-09 16:28:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:28:32,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-09 16:28:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:28:32,932 INFO L225 Difference]: With dead ends: 502 [2020-12-09 16:28:32,932 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:28:32,933 INFO L677 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 [2020-12-09 16:28:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:28:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:28:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:28:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:28:32,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-09 16:28:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:28:32,933 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:28:32,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:28:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:28:32,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:28:32,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 16:28:32,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:28:32 BasicIcfg [2020-12-09 16:28:32,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:28:32,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:28:32,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:28:32,936 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:28:32,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:28:26" (3/4) ... [2020-12-09 16:28:32,938 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:28:32,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2020-12-09 16:28:32,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2020-12-09 16:28:32,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-12-09 16:28:32,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 16:28:32,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:28:32,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:28:32,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b0d144a4-b2a7-4bd1-880c-f35fcf90e09d/bin/utaipan/witness.graphml [2020-12-09 16:28:32,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:28:32,970 INFO L168 Benchmark]: Toolchain (without parser) took 6866.35 ms. Allocated memory was 100.7 MB in the beginning and 335.5 MB in the end (delta: 234.9 MB). Free memory was 58.7 MB in the beginning and 171.8 MB in the end (delta: -113.1 MB). Peak memory consumption was 123.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,970 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 76.2 MB in the end (delta: 136.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:28:32,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.37 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 53.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.66 ms. Allocated memory is still 100.7 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,971 INFO L168 Benchmark]: Boogie Preprocessor took 17.72 ms. Allocated memory is still 100.7 MB. Free memory was 51.5 MB in the beginning and 50.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,972 INFO L168 Benchmark]: RCFGBuilder took 362.89 ms. Allocated memory is still 100.7 MB. Free memory was 50.1 MB in the beginning and 50.8 MB in the end (delta: -660.3 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,972 INFO L168 Benchmark]: TraceAbstraction took 6080.55 ms. Allocated memory was 100.7 MB in the beginning and 335.5 MB in the end (delta: 234.9 MB). Free memory was 50.3 MB in the beginning and 173.9 MB in the end (delta: -123.6 MB). Peak memory consumption was 112.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,972 INFO L168 Benchmark]: Witness Printer took 33.27 ms. Allocated memory is still 335.5 MB. Free memory was 173.9 MB in the beginning and 171.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:28:32,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 76.2 MB in the end (delta: 136.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.37 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 53.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.66 ms. Allocated memory is still 100.7 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.72 ms. Allocated memory is still 100.7 MB. Free memory was 51.5 MB in the beginning and 50.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 362.89 ms. Allocated memory is still 100.7 MB. Free memory was 50.1 MB in the beginning and 50.8 MB in the end (delta: -660.3 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6080.55 ms. Allocated memory was 100.7 MB in the beginning and 335.5 MB in the end (delta: 234.9 MB). Free memory was 50.3 MB in the beginning and 173.9 MB in the end (delta: -123.6 MB). Peak memory consumption was 112.3 MB. Max. memory is 16.1 GB. * Witness Printer took 33.27 ms. Allocated memory is still 335.5 MB. Free memory was 173.9 MB in the beginning and 171.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2361 VarBasedMoverChecksPositive, 83 VarBasedMoverChecksNegative, 40 SemBasedMoverChecksPositive, 43 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 882 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 107 PlacesBefore, 58 PlacesAfterwards, 108 TransitionsBefore, 59 TransitionsAfterwards, 2808 CoEnabledTransitionPairs, 7 FixpointIterations, 27 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 19420 MoverChecksTotal - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 864 SDtfs, 1009 SDslu, 1429 SDs, 0 SdLazy, 442 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5970occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 11806 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...