./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:29:05,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:29:05,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:29:05,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:29:05,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:29:05,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:29:05,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:29:05,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:29:05,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:29:05,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:29:05,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:29:05,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:29:05,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:29:05,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:29:05,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:29:05,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:29:05,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:29:05,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:29:05,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:29:05,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:29:05,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:29:05,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:29:05,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:29:05,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:29:05,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:29:05,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:29:05,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:29:05,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:29:05,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:29:05,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:29:05,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:29:05,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:29:05,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:29:05,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:29:05,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:29:05,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:29:05,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:29:05,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:29:05,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:29:05,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:29:05,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:29:05,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:29:05,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:29:05,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:29:05,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:29:05,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:29:05,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:29:05,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:29:05,341 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:29:05,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:29:05,341 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:29:05,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:29:05,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:29:05,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:29:05,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:29:05,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:29:05,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:29:05,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:29:05,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:29:05,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:29:05,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:29:05,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:29:05,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:29:05,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:29:05,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:29:05,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:29:05,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:29:05,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:29:05,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:29:05,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:29:05,347 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:29:05,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:29:05,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:29:05,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:29:05,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2021-10-21 20:29:05,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:29:05,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:29:05,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:29:05,666 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:29:05,667 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:29:05,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2021-10-21 20:29:05,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/data/034bee11c/9f81625533be405f90070040636eb350/FLAG50b62f9b8 [2021-10-21 20:29:06,227 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:29:06,233 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2021-10-21 20:29:06,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/data/034bee11c/9f81625533be405f90070040636eb350/FLAG50b62f9b8 [2021-10-21 20:29:06,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/data/034bee11c/9f81625533be405f90070040636eb350 [2021-10-21 20:29:06,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:29:06,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:29:06,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:29:06,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:29:06,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:29:06,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:29:06" (1/1) ... [2021-10-21 20:29:06,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9601c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:06, skipping insertion in model container [2021-10-21 20:29:06,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:29:06" (1/1) ... [2021-10-21 20:29:06,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:29:06,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:29:06,805 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2021-10-21 20:29:06,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:29:06,976 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:29:06,998 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2021-10-21 20:29:07,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:29:07,109 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:29:07,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07 WrapperNode [2021-10-21 20:29:07,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:29:07,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:29:07,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:29:07,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:29:07,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:29:07,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:29:07,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:29:07,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:29:07,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:29:07,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:29:07,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:29:07,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:29:07,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (1/1) ... [2021-10-21 20:29:07,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:29:07,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:29:07,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:29:07,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:29:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:29:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 20:29:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:29:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:29:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 20:29:07,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 20:29:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 20:29:07,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 20:29:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 20:29:07,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 20:29:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:29:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 20:29:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:29:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:29:07,336 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:29:07,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:29:07,652 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:29:07,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:29:07 BoogieIcfgContainer [2021-10-21 20:29:07,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:29:07,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:29:07,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:29:07,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:29:07,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:29:06" (1/3) ... [2021-10-21 20:29:07,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7272cdb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:29:07, skipping insertion in model container [2021-10-21 20:29:07,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:29:07" (2/3) ... [2021-10-21 20:29:07,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7272cdb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:29:07, skipping insertion in model container [2021-10-21 20:29:07,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:29:07" (3/3) ... [2021-10-21 20:29:07,665 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2021-10-21 20:29:07,671 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:29:07,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:29:07,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:29:07,672 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:29:07,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,713 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,715 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,715 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,715 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,716 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,717 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,717 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,718 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,720 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,720 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,726 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,726 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,733 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,737 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:29:07,738 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 20:29:07,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:29:07,789 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:29:07,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 20:29:07,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-10-21 20:29:07,851 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-10-21 20:29:07,851 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:29:07,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-21 20:29:07,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2021-10-21 20:29:07,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2021-10-21 20:29:07,892 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-10-21 20:29:07,893 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:29:07,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:07,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:07,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:07,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2068302952, now seen corresponding path program 1 times [2021-10-21 20:29:07,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:07,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360183036] [2021-10-21 20:29:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:07,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:08,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:08,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360183036] [2021-10-21 20:29:08,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360183036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:08,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:08,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:29:08,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121216002] [2021-10-21 20:29:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:29:08,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:08,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:29:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:29:08,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2021-10-21 20:29:08,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:08,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:08,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2021-10-21 20:29:08,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:08,617 INFO L129 PetriNetUnfolder]: 3/92 cut-off events. [2021-10-21 20:29:08,618 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:29:08,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 4/95 useless extension candidates. Maximal degree in co-relation 90. Up to 7 conditions per place. [2021-10-21 20:29:08,620 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 6 selfloop transitions, 2 changer transitions 11/79 dead transitions. [2021-10-21 20:29:08,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 203 flow [2021-10-21 20:29:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:29:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:29:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2021-10-21 20:29:08,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8875816993464052 [2021-10-21 20:29:08,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 679 transitions. [2021-10-21 20:29:08,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 679 transitions. [2021-10-21 20:29:08,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:08,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 679 transitions. [2021-10-21 20:29:08,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.44444444444444) internal successors, (679), 9 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:08,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:08,664 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:08,666 INFO L186 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 9 states and 679 transitions. [2021-10-21 20:29:08,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 203 flow [2021-10-21 20:29:08,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 20:29:08,674 INFO L242 Difference]: Finished difference. Result has 91 places, 68 transitions, 162 flow [2021-10-21 20:29:08,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2021-10-21 20:29:08,680 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-21 20:29:08,680 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 162 flow [2021-10-21 20:29:08,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:08,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:08,681 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:08,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:29:08,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash 909294711, now seen corresponding path program 1 times [2021-10-21 20:29:08,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:08,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918653662] [2021-10-21 20:29:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:08,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:08,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:08,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918653662] [2021-10-21 20:29:08,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918653662] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:08,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:08,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:29:08,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174193536] [2021-10-21 20:29:08,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:29:08,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:29:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:29:08,963 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-21 20:29:08,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:08,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:08,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-21 20:29:08,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:09,149 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2021-10-21 20:29:09,149 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2021-10-21 20:29:09,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 89 events. 4/89 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 136. Up to 7 conditions per place. [2021-10-21 20:29:09,151 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 6 selfloop transitions, 4 changer transitions 12/80 dead transitions. [2021-10-21 20:29:09,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 253 flow [2021-10-21 20:29:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:29:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:29:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2021-10-21 20:29:09,156 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8635294117647059 [2021-10-21 20:29:09,156 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2021-10-21 20:29:09,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2021-10-21 20:29:09,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:09,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2021-10-21 20:29:09,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,165 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,165 INFO L186 Difference]: Start difference. First operand has 91 places, 68 transitions, 162 flow. Second operand 10 states and 734 transitions. [2021-10-21 20:29:09,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 253 flow [2021-10-21 20:29:09,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 219 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-21 20:29:09,171 INFO L242 Difference]: Finished difference. Result has 93 places, 68 transitions, 176 flow [2021-10-21 20:29:09,171 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=93, PETRI_TRANSITIONS=68} [2021-10-21 20:29:09,172 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 14 predicate places. [2021-10-21 20:29:09,172 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 68 transitions, 176 flow [2021-10-21 20:29:09,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:09,173 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:09,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:29:09,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:09,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1604309580, now seen corresponding path program 1 times [2021-10-21 20:29:09,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:09,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010579797] [2021-10-21 20:29:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:09,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:09,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:09,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010579797] [2021-10-21 20:29:09,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010579797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:09,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:09,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:29:09,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542048189] [2021-10-21 20:29:09,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:29:09,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:29:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:29:09,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-21 20:29:09,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 68 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:09,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-21 20:29:09,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:09,587 INFO L129 PetriNetUnfolder]: 91/289 cut-off events. [2021-10-21 20:29:09,587 INFO L130 PetriNetUnfolder]: For 47/48 co-relation queries the response was YES. [2021-10-21 20:29:09,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 289 events. 91/289 cut-off events. For 47/48 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1303 event pairs, 2 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 505. Up to 81 conditions per place. [2021-10-21 20:29:09,596 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 6 changer transitions 19/93 dead transitions. [2021-10-21 20:29:09,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 296 flow [2021-10-21 20:29:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:29:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:29:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 676 transitions. [2021-10-21 20:29:09,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836601307189542 [2021-10-21 20:29:09,602 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 676 transitions. [2021-10-21 20:29:09,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 676 transitions. [2021-10-21 20:29:09,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:09,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 676 transitions. [2021-10-21 20:29:09,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.11111111111111) internal successors, (676), 9 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,611 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,611 INFO L186 Difference]: Start difference. First operand has 93 places, 68 transitions, 176 flow. Second operand 9 states and 676 transitions. [2021-10-21 20:29:09,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 296 flow [2021-10-21 20:29:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 270 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-21 20:29:09,624 INFO L242 Difference]: Finished difference. Result has 91 places, 71 transitions, 206 flow [2021-10-21 20:29:09,624 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2021-10-21 20:29:09,625 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-21 20:29:09,625 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 206 flow [2021-10-21 20:29:09,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,626 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:09,626 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:09,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:29:09,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash -24123949, now seen corresponding path program 1 times [2021-10-21 20:29:09,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:09,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498603023] [2021-10-21 20:29:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:09,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:09,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:09,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498603023] [2021-10-21 20:29:09,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498603023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:09,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:09,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:29:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863791673] [2021-10-21 20:29:09,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:29:09,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:29:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:29:09,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-21 20:29:09,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:09,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:09,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-21 20:29:09,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:10,010 INFO L129 PetriNetUnfolder]: 52/201 cut-off events. [2021-10-21 20:29:10,010 INFO L130 PetriNetUnfolder]: For 291/318 co-relation queries the response was YES. [2021-10-21 20:29:10,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 201 events. 52/201 cut-off events. For 291/318 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 691 event pairs, 0 based on Foata normal form. 13/212 useless extension candidates. Maximal degree in co-relation 547. Up to 75 conditions per place. [2021-10-21 20:29:10,013 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2021-10-21 20:29:10,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 459 flow [2021-10-21 20:29:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:29:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:29:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 750 transitions. [2021-10-21 20:29:10,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-10-21 20:29:10,018 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 750 transitions. [2021-10-21 20:29:10,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 750 transitions. [2021-10-21 20:29:10,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:10,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 750 transitions. [2021-10-21 20:29:10,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,025 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,025 INFO L186 Difference]: Start difference. First operand has 91 places, 71 transitions, 206 flow. Second operand 10 states and 750 transitions. [2021-10-21 20:29:10,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 459 flow [2021-10-21 20:29:10,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 435 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-21 20:29:10,035 INFO L242 Difference]: Finished difference. Result has 97 places, 74 transitions, 274 flow [2021-10-21 20:29:10,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2021-10-21 20:29:10,036 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2021-10-21 20:29:10,036 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 274 flow [2021-10-21 20:29:10,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:10,038 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:10,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:29:10,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:10,039 INFO L82 PathProgramCache]: Analyzing trace with hash 615819224, now seen corresponding path program 1 times [2021-10-21 20:29:10,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:10,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111296639] [2021-10-21 20:29:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:10,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:10,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:10,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111296639] [2021-10-21 20:29:10,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111296639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:10,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:10,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:29:10,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312425346] [2021-10-21 20:29:10,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:29:10,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:10,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:29:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:29:10,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-21 20:29:10,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 274 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:10,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-21 20:29:10,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:10,429 INFO L129 PetriNetUnfolder]: 16/114 cut-off events. [2021-10-21 20:29:10,430 INFO L130 PetriNetUnfolder]: For 406/463 co-relation queries the response was YES. [2021-10-21 20:29:10,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 114 events. 16/114 cut-off events. For 406/463 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 0 based on Foata normal form. 16/129 useless extension candidates. Maximal degree in co-relation 331. Up to 30 conditions per place. [2021-10-21 20:29:10,431 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 4 selfloop transitions, 12 changer transitions 13/87 dead transitions. [2021-10-21 20:29:10,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 458 flow [2021-10-21 20:29:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:29:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 20:29:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 812 transitions. [2021-10-21 20:29:10,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8684491978609625 [2021-10-21 20:29:10,439 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 812 transitions. [2021-10-21 20:29:10,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 812 transitions. [2021-10-21 20:29:10,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:10,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 812 transitions. [2021-10-21 20:29:10,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.81818181818181) internal successors, (812), 11 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,446 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,447 INFO L186 Difference]: Start difference. First operand has 97 places, 74 transitions, 274 flow. Second operand 11 states and 812 transitions. [2021-10-21 20:29:10,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 458 flow [2021-10-21 20:29:10,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 87 transitions, 359 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-10-21 20:29:10,453 INFO L242 Difference]: Finished difference. Result has 99 places, 74 transitions, 260 flow [2021-10-21 20:29:10,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=260, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2021-10-21 20:29:10,454 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2021-10-21 20:29:10,454 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 260 flow [2021-10-21 20:29:10,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:10,454 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:10,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:29:10,455 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash 67233634, now seen corresponding path program 1 times [2021-10-21 20:29:10,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:10,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067803027] [2021-10-21 20:29:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:10,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:10,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:10,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067803027] [2021-10-21 20:29:10,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067803027] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:10,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:10,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:29:10,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700885177] [2021-10-21 20:29:10,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:29:10,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:29:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:29:10,612 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-21 20:29:10,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:10,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-21 20:29:10,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:10,706 INFO L129 PetriNetUnfolder]: 10/120 cut-off events. [2021-10-21 20:29:10,709 INFO L130 PetriNetUnfolder]: For 130/140 co-relation queries the response was YES. [2021-10-21 20:29:10,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 120 events. 10/120 cut-off events. For 130/140 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 238 event pairs, 0 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 231. Up to 21 conditions per place. [2021-10-21 20:29:10,710 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 9 selfloop transitions, 1 changer transitions 5/79 dead transitions. [2021-10-21 20:29:10,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 79 transitions, 300 flow [2021-10-21 20:29:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:29:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 20:29:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2021-10-21 20:29:10,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8621848739495799 [2021-10-21 20:29:10,714 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2021-10-21 20:29:10,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2021-10-21 20:29:10,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:10,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2021-10-21 20:29:10,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,723 INFO L186 Difference]: Start difference. First operand has 99 places, 74 transitions, 260 flow. Second operand 7 states and 513 transitions. [2021-10-21 20:29:10,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 79 transitions, 300 flow [2021-10-21 20:29:10,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 79 transitions, 218 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-10-21 20:29:10,729 INFO L242 Difference]: Finished difference. Result has 91 places, 74 transitions, 191 flow [2021-10-21 20:29:10,729 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2021-10-21 20:29:10,730 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-21 20:29:10,730 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 191 flow [2021-10-21 20:29:10,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,731 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:29:10,731 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:10,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:29:10,732 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:29:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1905302522, now seen corresponding path program 2 times [2021-10-21 20:29:10,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:29:10,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493656413] [2021-10-21 20:29:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:10,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:29:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:10,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:29:10,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493656413] [2021-10-21 20:29:10,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493656413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:10,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:10,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:29:10,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781571660] [2021-10-21 20:29:10,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:29:10,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:29:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:29:10,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-21 20:29:10,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:29:10,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-21 20:29:10,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:29:10,989 INFO L129 PetriNetUnfolder]: 9/115 cut-off events. [2021-10-21 20:29:10,990 INFO L130 PetriNetUnfolder]: For 6/13 co-relation queries the response was YES. [2021-10-21 20:29:10,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 115 events. 9/115 cut-off events. For 6/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 0 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 172. Up to 12 conditions per place. [2021-10-21 20:29:10,990 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2021-10-21 20:29:10,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 74 transitions, 220 flow [2021-10-21 20:29:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:29:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 20:29:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 552 transitions. [2021-10-21 20:29:10,993 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8117647058823529 [2021-10-21 20:29:10,993 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 552 transitions. [2021-10-21 20:29:10,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 552 transitions. [2021-10-21 20:29:10,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:29:10,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 552 transitions. [2021-10-21 20:29:11,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:11,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:11,002 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:11,002 INFO L186 Difference]: Start difference. First operand has 91 places, 74 transitions, 191 flow. Second operand 8 states and 552 transitions. [2021-10-21 20:29:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 74 transitions, 220 flow [2021-10-21 20:29:11,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 74 transitions, 213 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-21 20:29:11,005 INFO L242 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2021-10-21 20:29:11,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2021-10-21 20:29:11,006 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2021-10-21 20:29:11,006 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2021-10-21 20:29:11,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:11,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:29:11,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:29:11,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:29:11,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 20:29:11,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:29:11,017 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:29:11,017 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:29:11,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:29:11 BasicIcfg [2021-10-21 20:29:11,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:29:11,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:29:11,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:29:11,021 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:29:11,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:29:07" (3/4) ... [2021-10-21 20:29:11,024 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:29:11,030 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 20:29:11,031 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 20:29:11,031 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 20:29:11,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 20:29:11,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:29:11,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:29:11,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:29:11,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:29:11,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:29:11,100 INFO L168 Benchmark]: Toolchain (without parser) took 4540.17 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 90.9 MB in the beginning and 95.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:29:11,100 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 127.9 MB. Free memory was 98.8 MB in the beginning and 98.8 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:29:11,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.32 ms. Allocated memory is still 127.9 MB. Free memory was 90.9 MB in the beginning and 93.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:29:11,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.57 ms. Allocated memory is still 127.9 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:29:11,101 INFO L168 Benchmark]: Boogie Preprocessor took 60.87 ms. Allocated memory is still 127.9 MB. Free memory was 91.8 MB in the beginning and 90.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:29:11,102 INFO L168 Benchmark]: RCFGBuilder took 409.50 ms. Allocated memory is still 127.9 MB. Free memory was 90.4 MB in the beginning and 77.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:29:11,102 INFO L168 Benchmark]: TraceAbstraction took 3363.92 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 77.1 MB in the beginning and 99.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:29:11,102 INFO L168 Benchmark]: Witness Printer took 76.00 ms. Allocated memory is still 172.0 MB. Free memory was 99.0 MB in the beginning and 95.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:29:11,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 127.9 MB. Free memory was 98.8 MB in the beginning and 98.8 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 552.32 ms. Allocated memory is still 127.9 MB. Free memory was 90.9 MB in the beginning and 93.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.57 ms. Allocated memory is still 127.9 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.87 ms. Allocated memory is still 127.9 MB. Free memory was 91.8 MB in the beginning and 90.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 409.50 ms. Allocated memory is still 127.9 MB. Free memory was 90.4 MB in the beginning and 77.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3363.92 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 77.1 MB in the beginning and 99.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * Witness Printer took 76.00 ms. Allocated memory is still 172.0 MB. Free memory was 99.0 MB in the beginning and 95.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 28.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3234.9ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1391.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 74.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 125 SDslu, 162 SDs, 0 SdLazy, 269 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 218.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 790.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=4, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.0ms SsaConstructionTime, 279.9ms SatisfiabilityAnalysisTime, 1188.4ms InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 1144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:29:11,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a79401a-08dd-44f6-8a01-d2cc5085700c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...