./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_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_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/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_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/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_313b0167-6f8f-4f77-b3ff-5c6392993cbd/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 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:19:29,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:19:29,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:19:29,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:19:29,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:19:29,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:19:29,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:19:29,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:19:29,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:19:29,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:19:29,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:19:29,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:19:29,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:19:29,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:19:29,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:19:29,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:19:29,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:19:29,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:19:29,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:19:29,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:19:29,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:19:29,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:19:29,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:19:29,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:19:29,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:19:29,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:19:29,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:19:29,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:19:29,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:19:29,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:19:29,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:19:29,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:19:29,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:19:29,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:19:29,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:19:29,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:19:29,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:19:29,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:19:29,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:19:29,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:19:29,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:19:29,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:19:29,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:19:29,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:19:29,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:19:29,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:19:29,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:19:29,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:19:29,535 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:19:29,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:19:29,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:19:29,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:19:29,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:19:29,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:19:29,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:19:29,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:19:29,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:19:29,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:19:29,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:19:29,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:19:29,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:19:29,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:19:29,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:19:29,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:19:29,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:29,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:19:29,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:19:29,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:19:29,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:19:29,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:19:29,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:19:29,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:19:29,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:19:29,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:19:29,547 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_313b0167-6f8f-4f77-b3ff-5c6392993cbd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 [2021-10-21 19:19:29,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:19:29,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:19:29,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:19:29,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:19:29,964 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:19:29,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe002_tso.i [2021-10-21 19:19:30,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/data/0ac43f1ae/12dae275aca6475e8da52d221f22ab3d/FLAGb8e69b099 [2021-10-21 19:19:30,831 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:19:30,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/sv-benchmarks/c/pthread-wmm/safe002_tso.i [2021-10-21 19:19:30,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/data/0ac43f1ae/12dae275aca6475e8da52d221f22ab3d/FLAGb8e69b099 [2021-10-21 19:19:31,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/data/0ac43f1ae/12dae275aca6475e8da52d221f22ab3d [2021-10-21 19:19:31,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:19:31,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:19:31,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:31,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:19:31,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:19:31,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccd1bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31, skipping insertion in model container [2021-10-21 19:19:31,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:19:31,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:19:31,355 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_313b0167-6f8f-4f77-b3ff-5c6392993cbd/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2021-10-21 19:19:31,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:31,655 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:19:31,673 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_313b0167-6f8f-4f77-b3ff-5c6392993cbd/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2021-10-21 19:19:31,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:31,792 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:19:31,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31 WrapperNode [2021-10-21 19:19:31,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:31,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:31,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:19:31,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:19:31,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:31,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:19:31,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:19:31,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:19:31,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:19:31,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:19:31,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:19:31,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:19:31,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (1/1) ... [2021-10-21 19:19:31,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:31,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:31,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:19:31,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:19:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:19:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:19:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:19:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:19:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 19:19:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 19:19:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 19:19:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 19:19:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 19:19:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 19:19:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:19:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:19:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:19:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:19:32,006 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 19:19:32,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:19:32,391 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:19:32,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:32 BoogieIcfgContainer [2021-10-21 19:19:32,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:19:32,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:19:32,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:19:32,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:19:32,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:19:31" (1/3) ... [2021-10-21 19:19:32,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f77729d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:32, skipping insertion in model container [2021-10-21 19:19:32,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:31" (2/3) ... [2021-10-21 19:19:32,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f77729d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:32, skipping insertion in model container [2021-10-21 19:19:32,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:32" (3/3) ... [2021-10-21 19:19:32,409 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2021-10-21 19:19:32,417 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:19:32,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:19:32,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:19:32,418 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:19:32,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,487 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,488 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,488 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,490 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,491 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,497 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,502 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,503 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,504 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,504 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,513 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,529 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,530 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:19:32,545 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 19:19:32,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:19:32,633 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 19:19:32,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:19:32,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-21 19:19:32,756 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-21 19:19:32,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:19:32,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-21 19:19:32,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-10-21 19:19:32,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-10-21 19:19:32,823 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-10-21 19:19:32,825 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:19:32,825 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:32,826 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] [2021-10-21 19:19:32,827 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 19:19:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:32,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1061825978, now seen corresponding path program 1 times [2021-10-21 19:19:32,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:32,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937756142] [2021-10-21 19:19:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:32,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:33,414 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 19:19:33,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:33,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937756142] [2021-10-21 19:19:33,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937756142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:33,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:33,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:19:33,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356994271] [2021-10-21 19:19:33,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:19:33,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:19:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:19:33,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-10-21 19:19:33,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 19:19:33,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:33,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-10-21 19:19:33,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:33,752 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2021-10-21 19:19:33,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:19:33,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 90. Up to 7 conditions per place. [2021-10-21 19:19:33,758 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-10-21 19:19:33,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-10-21 19:19:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:19:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:19:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-10-21 19:19:33,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-10-21 19:19:33,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-10-21 19:19:33,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-10-21 19:19:33,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:33,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-10-21 19:19:33,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 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 19:19:33,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 19:19:33,818 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 19:19:33,820 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-10-21 19:19:33,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-10-21 19:19:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 19:19:33,828 INFO L242 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-10-21 19:19:33,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-10-21 19:19:33,832 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-10-21 19:19:33,832 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-10-21 19:19:33,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 19:19:33,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:33,833 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] [2021-10-21 19:19:33,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:19:33,834 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 19:19:33,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:33,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1876017593, now seen corresponding path program 1 times [2021-10-21 19:19:33,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:33,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325293071] [2021-10-21 19:19:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:33,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:34,123 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 19:19:34,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:34,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325293071] [2021-10-21 19:19:34,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325293071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:34,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:34,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:19:34,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023217454] [2021-10-21 19:19:34,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:19:34,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:19:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:19:34,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-21 19:19:34,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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 19:19:34,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:34,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-21 19:19:34,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:34,551 INFO L129 PetriNetUnfolder]: 204/548 cut-off events. [2021-10-21 19:19:34,551 INFO L130 PetriNetUnfolder]: For 164/232 co-relation queries the response was YES. [2021-10-21 19:19:34,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 548 events. 204/548 cut-off events. For 164/232 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2871 event pairs, 22 based on Foata normal form. 18/551 useless extension candidates. Maximal degree in co-relation 1069. Up to 125 conditions per place. [2021-10-21 19:19:34,564 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 20 selfloop transitions, 6 changer transitions 38/116 dead transitions. [2021-10-21 19:19:34,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 432 flow [2021-10-21 19:19:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:19:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:19:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 912 transitions. [2021-10-21 19:19:34,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2021-10-21 19:19:34,571 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 912 transitions. [2021-10-21 19:19:34,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 912 transitions. [2021-10-21 19:19:34,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:34,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 912 transitions. [2021-10-21 19:19:34,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.15384615384616) internal successors, (912), 13 states have internal predecessors, (912), 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 19:19:34,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 19:19:34,581 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 19:19:34,581 INFO L186 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 13 states and 912 transitions. [2021-10-21 19:19:34,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 432 flow [2021-10-21 19:19:34,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 376 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-10-21 19:19:34,593 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 225 flow [2021-10-21 19:19:34,593 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-10-21 19:19:34,594 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-21 19:19:34,594 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 225 flow [2021-10-21 19:19:34,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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 19:19:34,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:34,595 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] [2021-10-21 19:19:34,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:19:34,596 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 19:19:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:34,596 INFO L82 PathProgramCache]: Analyzing trace with hash 165858440, now seen corresponding path program 1 times [2021-10-21 19:19:34,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:34,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5861802] [2021-10-21 19:19:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:34,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:34,755 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 19:19:34,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:34,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5861802] [2021-10-21 19:19:34,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5861802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:34,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:34,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:19:34,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748975523] [2021-10-21 19:19:34,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:19:34,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:19:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:19:34,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-10-21 19:19:34,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 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 19:19:34,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:34,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-10-21 19:19:34,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:35,048 INFO L129 PetriNetUnfolder]: 96/384 cut-off events. [2021-10-21 19:19:35,049 INFO L130 PetriNetUnfolder]: For 806/1058 co-relation queries the response was YES. [2021-10-21 19:19:35,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 384 events. 96/384 cut-off events. For 806/1058 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2048 event pairs, 31 based on Foata normal form. 12/387 useless extension candidates. Maximal degree in co-relation 1123. Up to 97 conditions per place. [2021-10-21 19:19:35,060 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 14 selfloop transitions, 5 changer transitions 30/105 dead transitions. [2021-10-21 19:19:35,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 568 flow [2021-10-21 19:19:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:19:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:19:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 721 transitions. [2021-10-21 19:19:35,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8583333333333333 [2021-10-21 19:19:35,064 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 721 transitions. [2021-10-21 19:19:35,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 721 transitions. [2021-10-21 19:19:35,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:35,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 721 transitions. [2021-10-21 19:19:35,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.1) internal successors, (721), 10 states have internal predecessors, (721), 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 19:19:35,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 19:19:35,073 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 19:19:35,073 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 225 flow. Second operand 10 states and 721 transitions. [2021-10-21 19:19:35,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 568 flow [2021-10-21 19:19:35,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 105 transitions, 537 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-10-21 19:19:35,087 INFO L242 Difference]: Finished difference. Result has 103 places, 73 transitions, 285 flow [2021-10-21 19:19:35,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=103, PETRI_TRANSITIONS=73} [2021-10-21 19:19:35,088 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2021-10-21 19:19:35,088 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 73 transitions, 285 flow [2021-10-21 19:19:35,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 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 19:19:35,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:35,091 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] [2021-10-21 19:19:35,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:19:35,096 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 19:19:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:35,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1208677586, now seen corresponding path program 1 times [2021-10-21 19:19:35,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:35,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276574021] [2021-10-21 19:19:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:35,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:35,307 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 19:19:35,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:35,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276574021] [2021-10-21 19:19:35,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276574021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:35,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:35,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:19:35,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636358752] [2021-10-21 19:19:35,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:19:35,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:19:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:19:35,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-10-21 19:19:35,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 73 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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 19:19:35,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:35,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-10-21 19:19:35,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:35,479 INFO L129 PetriNetUnfolder]: 51/237 cut-off events. [2021-10-21 19:19:35,479 INFO L130 PetriNetUnfolder]: For 1244/1368 co-relation queries the response was YES. [2021-10-21 19:19:35,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 237 events. 51/237 cut-off events. For 1244/1368 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1022 event pairs, 16 based on Foata normal form. 10/244 useless extension candidates. Maximal degree in co-relation 866. Up to 64 conditions per place. [2021-10-21 19:19:35,484 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 5 changer transitions 15/86 dead transitions. [2021-10-21 19:19:35,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 86 transitions, 502 flow [2021-10-21 19:19:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:19:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:19:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2021-10-21 19:19:35,488 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-10-21 19:19:35,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2021-10-21 19:19:35,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2021-10-21 19:19:35,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:35,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2021-10-21 19:19:35,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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 19:19:35,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 19:19:35,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 19:19:35,516 INFO L186 Difference]: Start difference. First operand has 103 places, 73 transitions, 285 flow. Second operand 7 states and 504 transitions. [2021-10-21 19:19:35,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 86 transitions, 502 flow [2021-10-21 19:19:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 449 flow, removed 22 selfloop flow, removed 8 redundant places. [2021-10-21 19:19:35,532 INFO L242 Difference]: Finished difference. Result has 99 places, 70 transitions, 246 flow [2021-10-21 19:19:35,533 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2021-10-21 19:19:35,533 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-21 19:19:35,533 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 246 flow [2021-10-21 19:19:35,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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 19:19:35,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:35,534 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 19:19:35,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:19:35,535 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 19:19:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash 747952665, now seen corresponding path program 1 times [2021-10-21 19:19:35,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:35,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28697014] [2021-10-21 19:19:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:35,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:35,662 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 19:19:35,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:35,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28697014] [2021-10-21 19:19:35,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28697014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:35,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:35,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:19:35,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935390796] [2021-10-21 19:19:35,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:19:35,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:19:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:19:35,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-10-21 19:19:35,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 19:19:35,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:35,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-10-21 19:19:35,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:35,840 INFO L129 PetriNetUnfolder]: 22/150 cut-off events. [2021-10-21 19:19:35,840 INFO L130 PetriNetUnfolder]: For 494/533 co-relation queries the response was YES. [2021-10-21 19:19:35,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 150 events. 22/150 cut-off events. For 494/533 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 456 event pairs, 12 based on Foata normal form. 7/156 useless extension candidates. Maximal degree in co-relation 427. Up to 33 conditions per place. [2021-10-21 19:19:35,843 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 11 selfloop transitions, 3 changer transitions 10/81 dead transitions. [2021-10-21 19:19:35,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 81 transitions, 402 flow [2021-10-21 19:19:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:19:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:19:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 645 transitions. [2021-10-21 19:19:35,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8531746031746031 [2021-10-21 19:19:35,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 645 transitions. [2021-10-21 19:19:35,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 645 transitions. [2021-10-21 19:19:35,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:35,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 645 transitions. [2021-10-21 19:19:35,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 19:19:35,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 19:19:35,858 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 19:19:35,858 INFO L186 Difference]: Start difference. First operand has 99 places, 70 transitions, 246 flow. Second operand 9 states and 645 transitions. [2021-10-21 19:19:35,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 81 transitions, 402 flow [2021-10-21 19:19:35,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 81 transitions, 332 flow, removed 29 selfloop flow, removed 10 redundant places. [2021-10-21 19:19:35,864 INFO L242 Difference]: Finished difference. Result has 101 places, 70 transitions, 235 flow [2021-10-21 19:19:35,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=101, PETRI_TRANSITIONS=70} [2021-10-21 19:19:35,865 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2021-10-21 19:19:35,865 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 70 transitions, 235 flow [2021-10-21 19:19:35,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 19:19:35,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:35,866 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] [2021-10-21 19:19:35,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:19:35,866 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 19:19:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:35,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1099939719, now seen corresponding path program 1 times [2021-10-21 19:19:35,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:35,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83002234] [2021-10-21 19:19:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:35,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:36,073 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 19:19:36,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:36,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83002234] [2021-10-21 19:19:36,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83002234] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:36,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:36,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:19:36,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393814780] [2021-10-21 19:19:36,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:19:36,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:19:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:19:36,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-10-21 19:19:36,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 70 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 19:19:36,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:36,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-10-21 19:19:36,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:36,177 INFO L129 PetriNetUnfolder]: 11/118 cut-off events. [2021-10-21 19:19:36,177 INFO L130 PetriNetUnfolder]: For 241/267 co-relation queries the response was YES. [2021-10-21 19:19:36,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 118 events. 11/118 cut-off events. For 241/267 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 281 event pairs, 8 based on Foata normal form. 9/126 useless extension candidates. Maximal degree in co-relation 286. Up to 22 conditions per place. [2021-10-21 19:19:36,179 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 10 selfloop transitions, 2 changer transitions 9/76 dead transitions. [2021-10-21 19:19:36,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 76 transitions, 326 flow [2021-10-21 19:19:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:19:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 19:19:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 564 transitions. [2021-10-21 19:19:36,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-10-21 19:19:36,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 564 transitions. [2021-10-21 19:19:36,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 564 transitions. [2021-10-21 19:19:36,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:36,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 564 transitions. [2021-10-21 19:19:36,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 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 19:19:36,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 19:19:36,191 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 19:19:36,191 INFO L186 Difference]: Start difference. First operand has 101 places, 70 transitions, 235 flow. Second operand 8 states and 564 transitions. [2021-10-21 19:19:36,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 76 transitions, 326 flow [2021-10-21 19:19:36,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 76 transitions, 294 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-10-21 19:19:36,196 INFO L242 Difference]: Finished difference. Result has 99 places, 67 transitions, 210 flow [2021-10-21 19:19:36,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2021-10-21 19:19:36,196 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-21 19:19:36,196 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 210 flow [2021-10-21 19:19:36,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 19:19:36,198 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:36,198 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] [2021-10-21 19:19:36,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:19:36,199 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 19:19:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:36,199 INFO L82 PathProgramCache]: Analyzing trace with hash 711985001, now seen corresponding path program 2 times [2021-10-21 19:19:36,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:36,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197015515] [2021-10-21 19:19:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:36,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:36,334 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 19:19:36,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:36,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197015515] [2021-10-21 19:19:36,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197015515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:36,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:36,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:19:36,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573996472] [2021-10-21 19:19:36,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:19:36,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:19:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:19:36,345 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 19:19:36,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 19:19:36,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:36,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 19:19:36,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:36,535 INFO L129 PetriNetUnfolder]: 106/333 cut-off events. [2021-10-21 19:19:36,535 INFO L130 PetriNetUnfolder]: For 250/251 co-relation queries the response was YES. [2021-10-21 19:19:36,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 333 events. 106/333 cut-off events. For 250/251 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1601 event pairs, 14 based on Foata normal form. 8/330 useless extension candidates. Maximal degree in co-relation 671. Up to 84 conditions per place. [2021-10-21 19:19:36,540 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 6 changer transitions 19/92 dead transitions. [2021-10-21 19:19:36,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 330 flow [2021-10-21 19:19:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:19:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:19:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-10-21 19:19:36,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-10-21 19:19:36,544 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-10-21 19:19:36,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-10-21 19:19:36,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:36,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-10-21 19:19:36,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 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 19:19:36,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 19:19:36,556 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 19:19:36,557 INFO L186 Difference]: Start difference. First operand has 99 places, 67 transitions, 210 flow. Second operand 9 states and 667 transitions. [2021-10-21 19:19:36,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 330 flow [2021-10-21 19:19:36,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 294 flow, removed 12 selfloop flow, removed 10 redundant places. [2021-10-21 19:19:36,562 INFO L242 Difference]: Finished difference. Result has 97 places, 70 transitions, 230 flow [2021-10-21 19:19:36,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2021-10-21 19:19:36,563 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 19 predicate places. [2021-10-21 19:19:36,563 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 230 flow [2021-10-21 19:19:36,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 19:19:36,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:36,564 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 19:19:36,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:19:36,564 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:19:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:36,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1350176374, now seen corresponding path program 1 times [2021-10-21 19:19:36,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:36,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429769785] [2021-10-21 19:19:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:36,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:36,724 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 19:19:36,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:36,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429769785] [2021-10-21 19:19:36,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429769785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:36,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:36,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:19:36,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674437794] [2021-10-21 19:19:36,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:19:36,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:36,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:19:36,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:19:36,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 19:19:36,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 19:19:36,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:36,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 19:19:36,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:36,874 INFO L129 PetriNetUnfolder]: 57/215 cut-off events. [2021-10-21 19:19:36,874 INFO L130 PetriNetUnfolder]: For 331/382 co-relation queries the response was YES. [2021-10-21 19:19:36,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 215 events. 57/215 cut-off events. For 331/382 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 783 event pairs, 4 based on Foata normal form. 14/226 useless extension candidates. Maximal degree in co-relation 610. Up to 76 conditions per place. [2021-10-21 19:19:36,877 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 9 changer transitions 19/95 dead transitions. [2021-10-21 19:19:36,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 483 flow [2021-10-21 19:19:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:19:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:19:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 740 transitions. [2021-10-21 19:19:36,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-10-21 19:19:36,882 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 740 transitions. [2021-10-21 19:19:36,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 740 transitions. [2021-10-21 19:19:36,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:36,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 740 transitions. [2021-10-21 19:19:36,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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 19:19:36,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 19:19:36,889 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 19:19:36,889 INFO L186 Difference]: Start difference. First operand has 97 places, 70 transitions, 230 flow. Second operand 10 states and 740 transitions. [2021-10-21 19:19:36,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 483 flow [2021-10-21 19:19:36,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 457 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-10-21 19:19:36,893 INFO L242 Difference]: Finished difference. Result has 102 places, 73 transitions, 296 flow [2021-10-21 19:19:36,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2021-10-21 19:19:36,894 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2021-10-21 19:19:36,894 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 296 flow [2021-10-21 19:19:36,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 19:19:36,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:36,895 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] [2021-10-21 19:19:36,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:19:36,896 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:19:36,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:36,896 INFO L82 PathProgramCache]: Analyzing trace with hash 648141831, now seen corresponding path program 1 times [2021-10-21 19:19:36,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:36,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588769841] [2021-10-21 19:19:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:36,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:37,006 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 19:19:37,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:37,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588769841] [2021-10-21 19:19:37,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588769841] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:37,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:37,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:19:37,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396784499] [2021-10-21 19:19:37,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:19:37,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:19:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:19:37,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 19:19:37,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 19:19:37,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:37,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 19:19:37,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:37,169 INFO L129 PetriNetUnfolder]: 16/113 cut-off events. [2021-10-21 19:19:37,170 INFO L130 PetriNetUnfolder]: For 396/447 co-relation queries the response was YES. [2021-10-21 19:19:37,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 113 events. 16/113 cut-off events. For 396/447 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 219 event pairs, 0 based on Foata normal form. 14/126 useless extension candidates. Maximal degree in co-relation 338. Up to 30 conditions per place. [2021-10-21 19:19:37,172 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 4 selfloop transitions, 12 changer transitions 13/86 dead transitions. [2021-10-21 19:19:37,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 86 transitions, 480 flow [2021-10-21 19:19:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:19:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 19:19:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2021-10-21 19:19:37,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8668831168831169 [2021-10-21 19:19:37,176 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2021-10-21 19:19:37,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2021-10-21 19:19:37,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:37,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2021-10-21 19:19:37,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 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 19:19:37,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 19:19:37,185 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 19:19:37,186 INFO L186 Difference]: Start difference. First operand has 102 places, 73 transitions, 296 flow. Second operand 11 states and 801 transitions. [2021-10-21 19:19:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 86 transitions, 480 flow [2021-10-21 19:19:37,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 365 flow, removed 47 selfloop flow, removed 14 redundant places. [2021-10-21 19:19:37,191 INFO L242 Difference]: Finished difference. Result has 100 places, 73 transitions, 266 flow [2021-10-21 19:19:37,192 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=266, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2021-10-21 19:19:37,192 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2021-10-21 19:19:37,192 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 266 flow [2021-10-21 19:19:37,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 19:19:37,193 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:19:37,193 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] [2021-10-21 19:19:37,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:19:37,194 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:19:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 522023760, now seen corresponding path program 1 times [2021-10-21 19:19:37,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:37,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811107547] [2021-10-21 19:19:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:37,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:37,336 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 19:19:37,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:37,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811107547] [2021-10-21 19:19:37,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811107547] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:37,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:37,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:19:37,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403121902] [2021-10-21 19:19:37,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:19:37,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:19:37,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:19:37,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 19:19:37,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 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 19:19:37,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:19:37,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 19:19:37,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:19:37,436 INFO L129 PetriNetUnfolder]: 5/82 cut-off events. [2021-10-21 19:19:37,436 INFO L130 PetriNetUnfolder]: For 75/80 co-relation queries the response was YES. [2021-10-21 19:19:37,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 82 events. 5/82 cut-off events. For 75/80 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 151. Up to 11 conditions per place. [2021-10-21 19:19:37,437 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-10-21 19:19:37,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 71 transitions, 280 flow [2021-10-21 19:19:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:19:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:19:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 500 transitions. [2021-10-21 19:19:37,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2021-10-21 19:19:37,440 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 500 transitions. [2021-10-21 19:19:37,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 500 transitions. [2021-10-21 19:19:37,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:19:37,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 500 transitions. [2021-10-21 19:19:37,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 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 19:19:37,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 19:19:37,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 19:19:37,446 INFO L186 Difference]: Start difference. First operand has 100 places, 73 transitions, 266 flow. Second operand 7 states and 500 transitions. [2021-10-21 19:19:37,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 71 transitions, 280 flow [2021-10-21 19:19:37,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 71 transitions, 198 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-10-21 19:19:37,450 INFO L242 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2021-10-21 19:19:37,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2021-10-21 19:19:37,451 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2021-10-21 19:19:37,451 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2021-10-21 19:19:37,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 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 19:19:37,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:19:37,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:19:37,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:19:37,457 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:19:37,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:19:37,466 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:19:37,467 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:19:37,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:19:37 BasicIcfg [2021-10-21 19:19:37,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:19:37,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:19:37,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:19:37,472 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:19:37,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:32" (3/4) ... [2021-10-21 19:19:37,475 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:19:37,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 19:19:37,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 19:19:37,485 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 19:19:37,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 19:19:37,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:19:37,493 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:19:37,493 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:19:37,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:19:37,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:19:37,560 INFO L168 Benchmark]: Toolchain (without parser) took 6484.27 ms. Allocated memory was 94.4 MB in the beginning and 163.6 MB in the end (delta: 69.2 MB). Free memory was 57.3 MB in the beginning and 126.6 MB in the end (delta: -69.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:37,560 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 94.4 MB. Free memory was 75.4 MB in the beginning and 75.3 MB in the end (delta: 97.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:37,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.02 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.1 MB in the beginning and 101.1 MB in the end (delta: -44.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:37,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.11 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 99.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:37,562 INFO L168 Benchmark]: Boogie Preprocessor took 29.63 ms. Allocated memory is still 136.3 MB. Free memory was 99.1 MB in the beginning and 98.2 MB in the end (delta: 936.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:37,563 INFO L168 Benchmark]: RCFGBuilder took 488.78 ms. Allocated memory is still 136.3 MB. Free memory was 97.6 MB in the beginning and 85.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:37,563 INFO L168 Benchmark]: TraceAbstraction took 5069.21 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 85.0 MB in the beginning and 129.1 MB in the end (delta: -44.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:37,564 INFO L168 Benchmark]: Witness Printer took 83.03 ms. Allocated memory is still 163.6 MB. Free memory was 129.1 MB in the beginning and 126.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:37,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 94.4 MB. Free memory was 75.4 MB in the beginning and 75.3 MB in the end (delta: 97.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 712.02 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.1 MB in the beginning and 101.1 MB in the end (delta: -44.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.11 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 99.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.63 ms. Allocated memory is still 136.3 MB. Free memory was 99.1 MB in the beginning and 98.2 MB in the end (delta: 936.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 488.78 ms. Allocated memory is still 136.3 MB. Free memory was 97.6 MB in the beginning and 85.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5069.21 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 85.0 MB in the beginning and 129.1 MB in the end (delta: -44.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 83.03 ms. Allocated memory is still 163.6 MB. Free memory was 129.1 MB in the beginning and 126.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: 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, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 52.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4848.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2368.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 138.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 101 SDtfs, 229 SDslu, 295 SDs, 0 SdLazy, 374 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 350.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1106.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=8, InterpolantAutomatonStates: 93, 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: 62.5ms SsaConstructionTime, 366.0ms SatisfiabilityAnalysisTime, 1497.8ms InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 545 ConstructedInterpolants, 0 QuantifiedInterpolants, 1465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 19:19:37,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313b0167-6f8f-4f77-b3ff-5c6392993cbd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...