./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD --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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:43:44,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:43:44,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:43:44,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:43:44,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:43:44,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:43:44,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:43:44,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:43:44,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:43:44,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:43:44,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:43:44,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:43:44,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:43:44,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:43:44,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:43:44,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:43:44,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:43:44,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:43:44,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:43:44,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:43:44,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:43:44,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:43:44,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:43:44,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:43:44,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:43:44,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:43:44,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:43:44,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:43:44,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:43:44,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:43:44,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:43:44,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:43:44,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:43:44,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:43:44,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:43:44,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:43:44,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:43:44,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:43:44,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:43:44,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:43:44,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:43:44,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:43:44,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:43:44,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:43:44,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:43:44,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:43:44,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:43:44,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:43:44,949 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:43:44,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:43:44,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:43:44,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:43:44,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:43:44,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:43:44,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:43:44,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:43:44,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:43:44,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:43:44,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:43:44,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:43:44,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:43:44,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:43:44,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:43:44,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:43:44,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:44,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:43:44,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:43:44,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:43:44,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:43:44,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:43:44,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:43:44,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:43:44,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:43:44,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:43:44,956 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_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2021-10-28 23:43:45,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:43:45,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:43:45,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:43:45,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:43:45,349 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:43:45,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2021-10-28 23:43:45,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/data/1f42cb4a5/3f3ab2df6bdf4c0b94b1599442ff8682/FLAGc23d6e21d [2021-10-28 23:43:46,106 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:43:46,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2021-10-28 23:43:46,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/data/1f42cb4a5/3f3ab2df6bdf4c0b94b1599442ff8682/FLAGc23d6e21d [2021-10-28 23:43:46,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/data/1f42cb4a5/3f3ab2df6bdf4c0b94b1599442ff8682 [2021-10-28 23:43:46,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:43:46,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:43:46,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:46,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:43:46,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:43:46,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:46" (1/1) ... [2021-10-28 23:43:46,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3f9572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:46, skipping insertion in model container [2021-10-28 23:43:46,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:46" (1/1) ... [2021-10-28 23:43:46,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:43:46,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:43:46,724 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-28 23:43:46,898 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_f405b808-4f16-41dc-b4b2-084cda2fbc3e/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2021-10-28 23:43:46,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:46,921 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:43:46,940 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-28 23:43:46,991 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_f405b808-4f16-41dc-b4b2-084cda2fbc3e/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2021-10-28 23:43:47,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:47,068 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:43:47,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47 WrapperNode [2021-10-28 23:43:47,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:47,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:43:47,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:43:47,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:43:47,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:43:47,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:43:47,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:43:47,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:43:47,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:43:47,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:43:47,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:43:47,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:43:47,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (1/1) ... [2021-10-28 23:43:47,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:47,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:43:47,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:43:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:43:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:43:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:43:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-10-28 23:43:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-10-28 23:43:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:43:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:43:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:43:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:43:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:43:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:43:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-10-28 23:43:47,300 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-10-28 23:43:47,302 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:43:47,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:43:47,838 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:43:47,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:47 BoogieIcfgContainer [2021-10-28 23:43:47,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:43:47,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:43:47,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:43:47,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:43:47,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:43:46" (1/3) ... [2021-10-28 23:43:47,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfc7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:47, skipping insertion in model container [2021-10-28 23:43:47,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:47" (2/3) ... [2021-10-28 23:43:47,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfc7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:47, skipping insertion in model container [2021-10-28 23:43:47,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:47" (3/3) ... [2021-10-28 23:43:47,863 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2021-10-28 23:43:47,870 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:43:47,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:43:47,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:43:47,873 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:43:47,942 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,943 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,943 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,943 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,943 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,944 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,944 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,944 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,944 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,945 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,945 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,945 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,945 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,946 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,946 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,946 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,947 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,947 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,947 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,947 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,948 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,948 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,948 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,948 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,949 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,949 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,949 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,949 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,950 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,950 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,950 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,951 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,951 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,951 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,951 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,952 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,952 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,952 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,953 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,953 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,953 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,953 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,954 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,954 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,954 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,954 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,954 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,955 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,955 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,955 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,956 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,956 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,956 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,956 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,957 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,957 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,957 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,957 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,958 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,958 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,958 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,958 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,959 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,959 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,959 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,959 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,960 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,960 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,961 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,961 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,961 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,961 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,962 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,962 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,962 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,962 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,963 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,963 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,963 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,963 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,964 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,964 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,964 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,964 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,965 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,965 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,965 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,965 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,966 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,966 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,966 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,967 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,967 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,967 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,968 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,968 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,968 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,968 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,968 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:47,969 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,018 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,019 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,019 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,019 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,020 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,020 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,021 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,021 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,026 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,026 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,026 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,027 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,027 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,027 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,032 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,032 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,032 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,033 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,033 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,033 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,036 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,037 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,037 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,037 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,038 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,038 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,038 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,039 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,039 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,061 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,062 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,062 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,062 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,062 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,063 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,063 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,063 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,063 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:43:48,079 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-28 23:43:48,166 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:43:48,188 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 [2021-10-28 23:43:48,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 23:43:48,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 110 transitions, 252 flow [2021-10-28 23:43:48,301 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2021-10-28 23:43:48,301 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:43:48,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 2/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2021-10-28 23:43:48,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 110 transitions, 252 flow [2021-10-28 23:43:48,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 207 flow [2021-10-28 23:43:48,366 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2021-10-28 23:43:48,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:43:48,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:48,369 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] [2021-10-28 23:43:48,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -712708714, now seen corresponding path program 1 times [2021-10-28 23:43:48,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:48,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549584438] [2021-10-28 23:43:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:48,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:48,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:48,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549584438] [2021-10-28 23:43:48,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549584438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:48,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:48,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:43:48,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686562205] [2021-10-28 23:43:48,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:43:48,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:43:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:43:48,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-10-28 23:43:48,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2021-10-28 23:43:48,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:48,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-10-28 23:43:48,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:49,705 INFO L129 PetriNetUnfolder]: 690/1948 cut-off events. [2021-10-28 23:43:49,705 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-10-28 23:43:49,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3138 conditions, 1948 events. 690/1948 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15576 event pairs, 157 based on Foata normal form. 132/1959 useless extension candidates. Maximal degree in co-relation 3073. Up to 388 conditions per place. [2021-10-28 23:43:49,745 INFO L132 encePairwiseOnDemand]: 98/110 looper letters, 54 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2021-10-28 23:43:49,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 511 flow [2021-10-28 23:43:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:43:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 23:43:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1182 transitions. [2021-10-28 23:43:49,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8954545454545455 [2021-10-28 23:43:49,772 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1182 transitions. [2021-10-28 23:43:49,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1182 transitions. [2021-10-28 23:43:49,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:49,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1182 transitions. [2021-10-28 23:43:49,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 98.5) internal successors, (1182), 12 states have internal predecessors, (1182), 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) [2021-10-28 23:43:49,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 110.0) internal successors, (1430), 13 states have internal predecessors, (1430), 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) [2021-10-28 23:43:49,819 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 110.0) internal successors, (1430), 13 states have internal predecessors, (1430), 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) [2021-10-28 23:43:49,821 INFO L186 Difference]: Start difference. First operand has 104 places, 93 transitions, 207 flow. Second operand 12 states and 1182 transitions. [2021-10-28 23:43:49,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 511 flow [2021-10-28 23:43:49,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 498 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-10-28 23:43:49,843 INFO L242 Difference]: Finished difference. Result has 116 places, 126 transitions, 410 flow [2021-10-28 23:43:49,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=410, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2021-10-28 23:43:49,847 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 12 predicate places. [2021-10-28 23:43:49,848 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 410 flow [2021-10-28 23:43:49,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2021-10-28 23:43:49,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:49,851 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] [2021-10-28 23:43:49,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:43:49,852 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash -32237196, now seen corresponding path program 1 times [2021-10-28 23:43:49,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:49,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890720477] [2021-10-28 23:43:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:49,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:50,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:50,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890720477] [2021-10-28 23:43:50,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890720477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:50,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:50,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:43:50,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618663303] [2021-10-28 23:43:50,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:43:50,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:43:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:43:50,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 110 [2021-10-28 23:43:50,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2021-10-28 23:43:50,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:50,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 110 [2021-10-28 23:43:50,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:50,832 INFO L129 PetriNetUnfolder]: 667/2854 cut-off events. [2021-10-28 23:43:50,832 INFO L130 PetriNetUnfolder]: For 642/853 co-relation queries the response was YES. [2021-10-28 23:43:50,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5070 conditions, 2854 events. 667/2854 cut-off events. For 642/853 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29455 event pairs, 87 based on Foata normal form. 94/2747 useless extension candidates. Maximal degree in co-relation 5015. Up to 359 conditions per place. [2021-10-28 23:43:50,884 INFO L132 encePairwiseOnDemand]: 103/110 looper letters, 23 selfloop transitions, 9 changer transitions 0/146 dead transitions. [2021-10-28 23:43:50,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 146 transitions, 536 flow [2021-10-28 23:43:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:43:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 23:43:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 421 transitions. [2021-10-28 23:43:50,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9568181818181818 [2021-10-28 23:43:50,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 421 transitions. [2021-10-28 23:43:50,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 421 transitions. [2021-10-28 23:43:50,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:50,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 421 transitions. [2021-10-28 23:43:50,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 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) [2021-10-28 23:43:50,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 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) [2021-10-28 23:43:50,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 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) [2021-10-28 23:43:50,896 INFO L186 Difference]: Start difference. First operand has 116 places, 126 transitions, 410 flow. Second operand 4 states and 421 transitions. [2021-10-28 23:43:50,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 146 transitions, 536 flow [2021-10-28 23:43:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 23:43:50,947 INFO L242 Difference]: Finished difference. Result has 122 places, 134 transitions, 478 flow [2021-10-28 23:43:50,948 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2021-10-28 23:43:50,949 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 18 predicate places. [2021-10-28 23:43:50,949 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 478 flow [2021-10-28 23:43:50,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2021-10-28 23:43:50,950 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:50,951 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] [2021-10-28 23:43:50,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:43:50,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash -933874026, now seen corresponding path program 2 times [2021-10-28 23:43:50,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:50,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780598117] [2021-10-28 23:43:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:50,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:51,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:51,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780598117] [2021-10-28 23:43:51,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780598117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:51,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:51,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:43:51,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314741221] [2021-10-28 23:43:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:43:51,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:43:51,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:43:51,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 110 [2021-10-28 23:43:51,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-10-28 23:43:51,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:51,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 110 [2021-10-28 23:43:51,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:51,342 INFO L129 PetriNetUnfolder]: 145/1082 cut-off events. [2021-10-28 23:43:51,342 INFO L130 PetriNetUnfolder]: For 548/709 co-relation queries the response was YES. [2021-10-28 23:43:51,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 1082 events. 145/1082 cut-off events. For 548/709 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9525 event pairs, 6 based on Foata normal form. 55/1098 useless extension candidates. Maximal degree in co-relation 2012. Up to 98 conditions per place. [2021-10-28 23:43:51,359 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 6 changer transitions 2/134 dead transitions. [2021-10-28 23:43:51,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 134 transitions, 500 flow [2021-10-28 23:43:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:43:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:43:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2021-10-28 23:43:51,362 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9515151515151515 [2021-10-28 23:43:51,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2021-10-28 23:43:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2021-10-28 23:43:51,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:51,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2021-10-28 23:43:51,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2021-10-28 23:43:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-10-28 23:43:51,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-10-28 23:43:51,367 INFO L186 Difference]: Start difference. First operand has 122 places, 134 transitions, 478 flow. Second operand 3 states and 314 transitions. [2021-10-28 23:43:51,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 134 transitions, 500 flow [2021-10-28 23:43:51,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 23:43:51,381 INFO L242 Difference]: Finished difference. Result has 125 places, 132 transitions, 492 flow [2021-10-28 23:43:51,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=125, PETRI_TRANSITIONS=132} [2021-10-28 23:43:51,382 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 21 predicate places. [2021-10-28 23:43:51,382 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 132 transitions, 492 flow [2021-10-28 23:43:51,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-10-28 23:43:51,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:51,383 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] [2021-10-28 23:43:51,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:43:51,383 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 271412015, now seen corresponding path program 1 times [2021-10-28 23:43:51,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:51,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935711740] [2021-10-28 23:43:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:51,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:51,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:51,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935711740] [2021-10-28 23:43:51,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935711740] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:51,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:51,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:43:51,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088982829] [2021-10-28 23:43:51,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:43:51,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:43:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:43:51,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-10-28 23:43:51,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 132 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2021-10-28 23:43:51,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:51,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-10-28 23:43:51,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:52,325 INFO L129 PetriNetUnfolder]: 535/2175 cut-off events. [2021-10-28 23:43:52,326 INFO L130 PetriNetUnfolder]: For 2156/2265 co-relation queries the response was YES. [2021-10-28 23:43:52,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5535 conditions, 2175 events. 535/2175 cut-off events. For 2156/2265 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19656 event pairs, 76 based on Foata normal form. 40/2145 useless extension candidates. Maximal degree in co-relation 5225. Up to 285 conditions per place. [2021-10-28 23:43:52,365 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 66 selfloop transitions, 46 changer transitions 33/227 dead transitions. [2021-10-28 23:43:52,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 227 transitions, 1238 flow [2021-10-28 23:43:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:43:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 23:43:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1169 transitions. [2021-10-28 23:43:52,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8856060606060606 [2021-10-28 23:43:52,372 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1169 transitions. [2021-10-28 23:43:52,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1169 transitions. [2021-10-28 23:43:52,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:52,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1169 transitions. [2021-10-28 23:43:52,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 97.41666666666667) internal successors, (1169), 12 states have internal predecessors, (1169), 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) [2021-10-28 23:43:52,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 110.0) internal successors, (1430), 13 states have internal predecessors, (1430), 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) [2021-10-28 23:43:52,390 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 110.0) internal successors, (1430), 13 states have internal predecessors, (1430), 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) [2021-10-28 23:43:52,390 INFO L186 Difference]: Start difference. First operand has 125 places, 132 transitions, 492 flow. Second operand 12 states and 1169 transitions. [2021-10-28 23:43:52,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 227 transitions, 1238 flow [2021-10-28 23:43:52,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 227 transitions, 1226 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:43:52,426 INFO L242 Difference]: Finished difference. Result has 144 places, 161 transitions, 832 flow [2021-10-28 23:43:52,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=832, PETRI_PLACES=144, PETRI_TRANSITIONS=161} [2021-10-28 23:43:52,427 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 40 predicate places. [2021-10-28 23:43:52,431 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 161 transitions, 832 flow [2021-10-28 23:43:52,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2021-10-28 23:43:52,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:52,432 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] [2021-10-28 23:43:52,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:43:52,434 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash -480528035, now seen corresponding path program 1 times [2021-10-28 23:43:52,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:52,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809715746] [2021-10-28 23:43:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:52,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:52,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:52,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809715746] [2021-10-28 23:43:52,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809715746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:52,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:52,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:43:52,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008020584] [2021-10-28 23:43:52,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:43:52,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:43:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:43:52,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 110 [2021-10-28 23:43:52,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 161 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2021-10-28 23:43:52,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:52,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 110 [2021-10-28 23:43:52,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:53,359 INFO L129 PetriNetUnfolder]: 420/2053 cut-off events. [2021-10-28 23:43:53,360 INFO L130 PetriNetUnfolder]: For 3113/3243 co-relation queries the response was YES. [2021-10-28 23:43:53,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6055 conditions, 2053 events. 420/2053 cut-off events. For 3113/3243 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19452 event pairs, 75 based on Foata normal form. 93/2116 useless extension candidates. Maximal degree in co-relation 5698. Up to 300 conditions per place. [2021-10-28 23:43:53,400 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 67 selfloop transitions, 58 changer transitions 5/211 dead transitions. [2021-10-28 23:43:53,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 1404 flow [2021-10-28 23:43:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:43:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:43:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1240 transitions. [2021-10-28 23:43:53,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8671328671328671 [2021-10-28 23:43:53,408 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1240 transitions. [2021-10-28 23:43:53,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1240 transitions. [2021-10-28 23:43:53,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:53,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1240 transitions. [2021-10-28 23:43:53,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.38461538461539) internal successors, (1240), 13 states have internal predecessors, (1240), 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) [2021-10-28 23:43:53,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 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) [2021-10-28 23:43:53,424 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 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) [2021-10-28 23:43:53,425 INFO L186 Difference]: Start difference. First operand has 144 places, 161 transitions, 832 flow. Second operand 13 states and 1240 transitions. [2021-10-28 23:43:53,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 1404 flow [2021-10-28 23:43:53,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 211 transitions, 1366 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-28 23:43:53,484 INFO L242 Difference]: Finished difference. Result has 158 places, 181 transitions, 1115 flow [2021-10-28 23:43:53,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1115, PETRI_PLACES=158, PETRI_TRANSITIONS=181} [2021-10-28 23:43:53,485 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 54 predicate places. [2021-10-28 23:43:53,485 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 181 transitions, 1115 flow [2021-10-28 23:43:53,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2021-10-28 23:43:53,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:53,487 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] [2021-10-28 23:43:53,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:43:53,487 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1608109519, now seen corresponding path program 1 times [2021-10-28 23:43:53,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:53,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697738451] [2021-10-28 23:43:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:53,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:53,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:53,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697738451] [2021-10-28 23:43:53,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697738451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:53,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:53,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:43:53,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988015829] [2021-10-28 23:43:53,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:43:53,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:43:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:43:53,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 110 [2021-10-28 23:43:53,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 181 transitions, 1115 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2021-10-28 23:43:53,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:53,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 110 [2021-10-28 23:43:53,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:54,458 INFO L129 PetriNetUnfolder]: 464/2128 cut-off events. [2021-10-28 23:43:54,458 INFO L130 PetriNetUnfolder]: For 4288/4419 co-relation queries the response was YES. [2021-10-28 23:43:54,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6823 conditions, 2128 events. 464/2128 cut-off events. For 4288/4419 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20130 event pairs, 70 based on Foata normal form. 71/2158 useless extension candidates. Maximal degree in co-relation 6540. Up to 308 conditions per place. [2021-10-28 23:43:54,503 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 76 selfloop transitions, 62 changer transitions 11/234 dead transitions. [2021-10-28 23:43:54,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 234 transitions, 1754 flow [2021-10-28 23:43:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:43:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:43:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1243 transitions. [2021-10-28 23:43:54,510 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8692307692307693 [2021-10-28 23:43:54,510 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1243 transitions. [2021-10-28 23:43:54,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1243 transitions. [2021-10-28 23:43:54,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:54,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1243 transitions. [2021-10-28 23:43:54,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.61538461538461) internal successors, (1243), 13 states have internal predecessors, (1243), 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) [2021-10-28 23:43:54,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 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) [2021-10-28 23:43:54,590 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 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) [2021-10-28 23:43:54,590 INFO L186 Difference]: Start difference. First operand has 158 places, 181 transitions, 1115 flow. Second operand 13 states and 1243 transitions. [2021-10-28 23:43:54,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 234 transitions, 1754 flow [2021-10-28 23:43:54,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 234 transitions, 1713 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-10-28 23:43:54,654 INFO L242 Difference]: Finished difference. Result has 172 places, 199 transitions, 1400 flow [2021-10-28 23:43:54,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1400, PETRI_PLACES=172, PETRI_TRANSITIONS=199} [2021-10-28 23:43:54,656 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 68 predicate places. [2021-10-28 23:43:54,656 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 199 transitions, 1400 flow [2021-10-28 23:43:54,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2021-10-28 23:43:54,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:54,657 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] [2021-10-28 23:43:54,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:43:54,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1548872217, now seen corresponding path program 1 times [2021-10-28 23:43:54,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:54,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709081163] [2021-10-28 23:43:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:54,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:54,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:54,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709081163] [2021-10-28 23:43:54,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709081163] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:54,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:54,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:43:54,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350174675] [2021-10-28 23:43:54,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:43:54,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:43:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:43:54,851 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 110 [2021-10-28 23:43:54,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 199 transitions, 1400 flow. Second operand has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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) [2021-10-28 23:43:54,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:54,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 110 [2021-10-28 23:43:54,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:55,479 INFO L129 PetriNetUnfolder]: 266/1600 cut-off events. [2021-10-28 23:43:55,479 INFO L130 PetriNetUnfolder]: For 3955/4181 co-relation queries the response was YES. [2021-10-28 23:43:55,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5279 conditions, 1600 events. 266/1600 cut-off events. For 3955/4181 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15036 event pairs, 11 based on Foata normal form. 57/1635 useless extension candidates. Maximal degree in co-relation 5009. Up to 149 conditions per place. [2021-10-28 23:43:55,513 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 36 selfloop transitions, 17 changer transitions 24/220 dead transitions. [2021-10-28 23:43:55,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 220 transitions, 1631 flow [2021-10-28 23:43:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:43:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:43:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 969 transitions. [2021-10-28 23:43:55,519 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8809090909090909 [2021-10-28 23:43:55,519 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 969 transitions. [2021-10-28 23:43:55,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 969 transitions. [2021-10-28 23:43:55,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:55,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 969 transitions. [2021-10-28 23:43:55,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.9) internal successors, (969), 10 states have internal predecessors, (969), 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) [2021-10-28 23:43:55,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 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) [2021-10-28 23:43:55,530 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 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) [2021-10-28 23:43:55,530 INFO L186 Difference]: Start difference. First operand has 172 places, 199 transitions, 1400 flow. Second operand 10 states and 969 transitions. [2021-10-28 23:43:55,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 220 transitions, 1631 flow [2021-10-28 23:43:55,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 220 transitions, 1550 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-10-28 23:43:55,589 INFO L242 Difference]: Finished difference. Result has 177 places, 182 transitions, 1184 flow [2021-10-28 23:43:55,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1184, PETRI_PLACES=177, PETRI_TRANSITIONS=182} [2021-10-28 23:43:55,590 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 73 predicate places. [2021-10-28 23:43:55,591 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 182 transitions, 1184 flow [2021-10-28 23:43:55,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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) [2021-10-28 23:43:55,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:55,592 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] [2021-10-28 23:43:55,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:43:55,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:55,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:55,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1533167203, now seen corresponding path program 2 times [2021-10-28 23:43:55,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:55,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079882899] [2021-10-28 23:43:55,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:55,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:55,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:55,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079882899] [2021-10-28 23:43:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079882899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:55,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:55,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:43:55,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586316035] [2021-10-28 23:43:55,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:43:55,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:43:55,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:43:55,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 110 [2021-10-28 23:43:55,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 182 transitions, 1184 flow. Second operand has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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) [2021-10-28 23:43:55,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:43:55,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 110 [2021-10-28 23:43:55,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:43:56,381 INFO L129 PetriNetUnfolder]: 215/1342 cut-off events. [2021-10-28 23:43:56,382 INFO L130 PetriNetUnfolder]: For 3266/3979 co-relation queries the response was YES. [2021-10-28 23:43:56,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 1342 events. 215/1342 cut-off events. For 3266/3979 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12204 event pairs, 30 based on Foata normal form. 30/1349 useless extension candidates. Maximal degree in co-relation 4604. Up to 141 conditions per place. [2021-10-28 23:43:56,414 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 34 selfloop transitions, 21 changer transitions 4/202 dead transitions. [2021-10-28 23:43:56,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 202 transitions, 1452 flow [2021-10-28 23:43:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:43:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:43:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 870 transitions. [2021-10-28 23:43:56,420 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2021-10-28 23:43:56,420 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 870 transitions. [2021-10-28 23:43:56,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 870 transitions. [2021-10-28 23:43:56,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:43:56,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 870 transitions. [2021-10-28 23:43:56,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.66666666666667) internal successors, (870), 9 states have internal predecessors, (870), 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) [2021-10-28 23:43:56,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 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) [2021-10-28 23:43:56,430 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 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) [2021-10-28 23:43:56,431 INFO L186 Difference]: Start difference. First operand has 177 places, 182 transitions, 1184 flow. Second operand 9 states and 870 transitions. [2021-10-28 23:43:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 202 transitions, 1452 flow [2021-10-28 23:43:56,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 202 transitions, 1352 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-10-28 23:43:56,474 INFO L242 Difference]: Finished difference. Result has 171 places, 186 transitions, 1168 flow [2021-10-28 23:43:56,475 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1168, PETRI_PLACES=171, PETRI_TRANSITIONS=186} [2021-10-28 23:43:56,475 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 67 predicate places. [2021-10-28 23:43:56,475 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 186 transitions, 1168 flow [2021-10-28 23:43:56,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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) [2021-10-28 23:43:56,476 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:43:56,477 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] [2021-10-28 23:43:56,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:43:56,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-28 23:43:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash -170068417, now seen corresponding path program 3 times [2021-10-28 23:43:56,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:56,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364492634] [2021-10-28 23:43:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:56,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:43:56,516 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:43:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:43:56,610 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:43:56,611 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:43:56,612 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:43:56,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:43:56,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:43:56,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:43:56,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:43:56,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-28 23:43:56,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:43:56,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:43:56,621 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2021-10-28 23:43:56,630 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:43:56,630 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:43:56,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:43:56 BasicIcfg [2021-10-28 23:43:56,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:43:56,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:43:56,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:43:56,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:43:56,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:47" (3/4) ... [2021-10-28 23:43:56,776 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:43:56,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:43:56,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:43:56,867 INFO L168 Benchmark]: Toolchain (without parser) took 10508.94 ms. Allocated memory was 107.0 MB in the beginning and 306.2 MB in the end (delta: 199.2 MB). Free memory was 63.5 MB in the beginning and 109.0 MB in the end (delta: -45.5 MB). Peak memory consumption was 154.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:56,868 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 107.0 MB. Free memory is still 81.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:43:56,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.92 ms. Allocated memory is still 107.0 MB. Free memory was 63.3 MB in the beginning and 69.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:56,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.87 ms. Allocated memory is still 107.0 MB. Free memory was 69.1 MB in the beginning and 66.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:56,870 INFO L168 Benchmark]: Boogie Preprocessor took 34.85 ms. Allocated memory is still 107.0 MB. Free memory was 66.8 MB in the beginning and 65.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:43:56,870 INFO L168 Benchmark]: RCFGBuilder took 675.57 ms. Allocated memory is still 107.0 MB. Free memory was 65.6 MB in the beginning and 50.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:56,871 INFO L168 Benchmark]: TraceAbstraction took 8928.37 ms. Allocated memory was 107.0 MB in the beginning and 306.2 MB in the end (delta: 199.2 MB). Free memory was 50.0 MB in the beginning and 122.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 129.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:56,872 INFO L168 Benchmark]: Witness Printer took 93.00 ms. Allocated memory is still 306.2 MB. Free memory was 122.6 MB in the beginning and 109.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:56,875 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 107.0 MB. Free memory is still 81.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 706.92 ms. Allocated memory is still 107.0 MB. Free memory was 63.3 MB in the beginning and 69.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.87 ms. Allocated memory is still 107.0 MB. Free memory was 69.1 MB in the beginning and 66.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.85 ms. Allocated memory is still 107.0 MB. Free memory was 66.8 MB in the beginning and 65.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 675.57 ms. Allocated memory is still 107.0 MB. Free memory was 65.6 MB in the beginning and 50.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8928.37 ms. Allocated memory was 107.0 MB in the beginning and 306.2 MB in the end (delta: 199.2 MB). Free memory was 50.0 MB in the beginning and 122.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 129.5 MB. Max. memory is 16.1 GB. * Witness Printer took 93.00 ms. Allocated memory is still 306.2 MB. Free memory was 122.6 MB in the beginning and 109.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 738]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L704] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L748] 0 pthread_t t1, t2, t3, t4; VAL [r=0, w=0, x=0, y=0] [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L724] 2 int l; VAL [r=0, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L724] 4 int l; VAL [r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L743] 2 r = l VAL [r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L727] 4 l = x VAL [r=0, w=1, x=0, y=0] [L730] 4 y = l VAL [r=0, w=1, x=0, y=0] [L733] 4 int ly = y; VAL [r=0, w=1, x=0, y=0] [L716] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) VAL [r=0, w=1, x=3, y=0] [L738] 4 reach_error() VAL [r=0, w=1, x=3, y=0] - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 135 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 181 SDtfs, 308 SDslu, 259 SDs, 0 SdLazy, 676 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1400occurred in iteration=6, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 724 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:43:56,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f405b808-4f16-41dc-b4b2-084cda2fbc3e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...