./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro --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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:41:24,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:41:24,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:41:24,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:41:24,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:41:24,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:41:24,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:41:24,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:41:24,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:41:24,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:41:24,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:41:24,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:41:24,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:41:24,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:41:24,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:41:24,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:41:24,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:41:24,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:41:24,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:41:24,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:41:24,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:41:24,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:41:24,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:41:24,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:41:24,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:41:24,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:41:24,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:41:24,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:41:24,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:41:24,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:41:24,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:41:24,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:41:24,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:41:24,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:41:24,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:41:24,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:41:24,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:41:24,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:41:24,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:41:24,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:41:24,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:41:24,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:41:24,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:41:24,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:41:24,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:41:24,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:41:24,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:41:24,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:41:24,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:41:24,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:41:24,222 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:41:24,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:41:24,223 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:41:24,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:41:24,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:41:24,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:41:24,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:41:24,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:41:24,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:41:24,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:41:24,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:41:24,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:41:24,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:41:24,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:41:24,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:41:24,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:41:24,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:41:24,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:41:24,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:41:24,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:41:24,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:41:24,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:41:24,229 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:41:24,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:41:24,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:41:24,230 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_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2022-11-18 18:41:24,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:41:24,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:41:24,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:41:24,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:41:24,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:41:24,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-18 18:41:24,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/data/3ff6ee7d7/92f37c0453ab4780b56af5021f98110e/FLAG0a642f6a5 [2022-11-18 18:41:25,440 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:41:25,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-18 18:41:25,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/data/3ff6ee7d7/92f37c0453ab4780b56af5021f98110e/FLAG0a642f6a5 [2022-11-18 18:41:25,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/data/3ff6ee7d7/92f37c0453ab4780b56af5021f98110e [2022-11-18 18:41:25,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:41:25,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:41:25,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:41:25,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:41:25,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:41:25,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:41:25" (1/1) ... [2022-11-18 18:41:25,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8961043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:25, skipping insertion in model container [2022-11-18 18:41:25,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:41:25" (1/1) ... [2022-11-18 18:41:25,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:41:25,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:41:25,998 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 18:41:26,212 WARN L234 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_fba1adf1-48cb-4871-9e5c-a17ba40dece3/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-18 18:41:26,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:41:26,249 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:41:26,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 18:41:26,316 WARN L234 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_fba1adf1-48cb-4871-9e5c-a17ba40dece3/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-18 18:41:26,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:41:26,373 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:41:26,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26 WrapperNode [2022-11-18 18:41:26,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:41:26,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:41:26,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:41:26,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:41:26,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,447 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-11-18 18:41:26,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:41:26,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:41:26,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:41:26,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:41:26,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:41:26,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:41:26,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:41:26,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:41:26,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (1/1) ... [2022-11-18 18:41:26,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:41:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:26,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:41:26,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:41:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:41:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:41:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:41:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:41:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-18 18:41:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-18 18:41:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:41:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:41:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:41:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:41:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:41:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:41:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-18 18:41:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-18 18:41:26,601 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:41:26,834 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:41:26,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:41:27,128 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:41:27,173 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:41:27,173 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:41:27,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:41:27 BoogieIcfgContainer [2022-11-18 18:41:27,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:41:27,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:41:27,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:41:27,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:41:27,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:41:25" (1/3) ... [2022-11-18 18:41:27,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102887eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:41:27, skipping insertion in model container [2022-11-18 18:41:27,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:41:26" (2/3) ... [2022-11-18 18:41:27,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102887eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:41:27, skipping insertion in model container [2022-11-18 18:41:27,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:41:27" (3/3) ... [2022-11-18 18:41:27,186 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-11-18 18:41:27,196 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:41:27,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:41:27,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:41:27,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:41:27,307 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 18:41:27,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 256 flow [2022-11-18 18:41:27,481 INFO L130 PetriNetUnfolder]: 2/108 cut-off events. [2022-11-18 18:41:27,482 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:41:27,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 2/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-11-18 18:41:27,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 256 flow [2022-11-18 18:41:27,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 94 transitions, 209 flow [2022-11-18 18:41:27,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:41:27,539 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@229ac64a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:41:27,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 18:41:27,580 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2022-11-18 18:41:27,580 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:41:27,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:27,581 INFO L209 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] [2022-11-18 18:41:27,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:27,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash 764683200, now seen corresponding path program 1 times [2022-11-18 18:41:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635619259] [2022-11-18 18:41:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:28,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:28,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635619259] [2022-11-18 18:41:28,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635619259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:28,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:28,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:41:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254964384] [2022-11-18 18:41:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:41:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:41:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:41:28,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-18 18:41:28,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2022-11-18 18:41:28,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:28,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-18 18:41:28,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:30,208 INFO L130 PetriNetUnfolder]: 3826/7989 cut-off events. [2022-11-18 18:41:30,208 INFO L131 PetriNetUnfolder]: For 1855/1855 co-relation queries the response was YES. [2022-11-18 18:41:30,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7989 events. 3826/7989 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 71062 event pairs, 1181 based on Foata normal form. 418/8051 useless extension candidates. Maximal degree in co-relation 13913. Up to 2013 conditions per place. [2022-11-18 18:41:30,294 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 109 selfloop transitions, 24 changer transitions 4/201 dead transitions. [2022-11-18 18:41:30,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 201 transitions, 769 flow [2022-11-18 18:41:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:41:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:41:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 961 transitions. [2022-11-18 18:41:30,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8580357142857142 [2022-11-18 18:41:30,326 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 961 transitions. [2022-11-18 18:41:30,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 961 transitions. [2022-11-18 18:41:30,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:30,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 961 transitions. [2022-11-18 18:41:30,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 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) [2022-11-18 18:41:30,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-18 18:41:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-18 18:41:30,362 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 209 flow. Second operand 10 states and 961 transitions. [2022-11-18 18:41:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 201 transitions, 769 flow [2022-11-18 18:41:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 201 transitions, 713 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:41:30,405 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 367 flow [2022-11-18 18:41:30,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=367, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2022-11-18 18:41:30,415 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2022-11-18 18:41:30,416 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 367 flow [2022-11-18 18:41:30,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2022-11-18 18:41:30,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:30,418 INFO L209 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] [2022-11-18 18:41:30,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:41:30,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1416784543, now seen corresponding path program 1 times [2022-11-18 18:41:30,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862182589] [2022-11-18 18:41:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:30,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862182589] [2022-11-18 18:41:30,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862182589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:30,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:30,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:41:30,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320865578] [2022-11-18 18:41:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:30,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:41:30,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:41:30,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:41:30,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2022-11-18 18:41:30,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2022-11-18 18:41:30,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:30,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2022-11-18 18:41:30,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:31,051 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [60#L748-4true, 44#writerENTRYtrue, 102#L740true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 71#L740true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2022-11-18 18:41:31,052 INFO L383 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-11-18 18:41:31,053 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:41:31,053 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:41:31,053 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:41:31,139 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][63], [60#L748-4true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 155#(= ~w~0 1), Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, 21#L717-1true]) [2022-11-18 18:41:31,140 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-11-18 18:41:31,140 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-18 18:41:31,141 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-18 18:41:31,141 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-18 18:41:31,174 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [60#L748-4true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 153#true, 94#L721true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2022-11-18 18:41:31,174 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-11-18 18:41:31,174 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:41:31,175 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:41:31,175 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:41:31,233 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [107#L749-2true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2022-11-18 18:41:31,234 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-11-18 18:41:31,234 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-18 18:41:31,234 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-18 18:41:31,234 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-18 18:41:31,256 INFO L130 PetriNetUnfolder]: 890/2859 cut-off events. [2022-11-18 18:41:31,257 INFO L131 PetriNetUnfolder]: For 676/687 co-relation queries the response was YES. [2022-11-18 18:41:31,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5463 conditions, 2859 events. 890/2859 cut-off events. For 676/687 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26229 event pairs, 295 based on Foata normal form. 124/2858 useless extension candidates. Maximal degree in co-relation 4840. Up to 649 conditions per place. [2022-11-18 18:41:31,295 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-11-18 18:41:31,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 433 flow [2022-11-18 18:41:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:41:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:41:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2022-11-18 18:41:31,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2022-11-18 18:41:31,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2022-11-18 18:41:31,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2022-11-18 18:41:31,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:31,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2022-11-18 18:41:31,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-18 18:41:31,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-18 18:41:31,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-18 18:41:31,302 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 367 flow. Second operand 3 states and 306 transitions. [2022-11-18 18:41:31,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 433 flow [2022-11-18 18:41:31,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:41:31,325 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 383 flow [2022-11-18 18:41:31,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2022-11-18 18:41:31,326 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2022-11-18 18:41:31,327 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 383 flow [2022-11-18 18:41:31,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2022-11-18 18:41:31,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:31,328 INFO L209 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] [2022-11-18 18:41:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:41:31,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1184537247, now seen corresponding path program 2 times [2022-11-18 18:41:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:31,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209647976] [2022-11-18 18:41:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:31,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:31,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:31,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209647976] [2022-11-18 18:41:31,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209647976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:31,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:31,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:41:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612996484] [2022-11-18 18:41:31,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:41:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:41:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:41:31,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2022-11-18 18:41:31,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2022-11-18 18:41:31,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:31,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2022-11-18 18:41:31,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:31,999 INFO L130 PetriNetUnfolder]: 304/1699 cut-off events. [2022-11-18 18:41:31,999 INFO L131 PetriNetUnfolder]: For 832/877 co-relation queries the response was YES. [2022-11-18 18:41:32,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3194 conditions, 1699 events. 304/1699 cut-off events. For 832/877 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15606 event pairs, 42 based on Foata normal form. 27/1674 useless extension candidates. Maximal degree in co-relation 2866. Up to 271 conditions per place. [2022-11-18 18:41:32,018 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 23 selfloop transitions, 9 changer transitions 2/137 dead transitions. [2022-11-18 18:41:32,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 137 transitions, 517 flow [2022-11-18 18:41:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:41:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:41:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2022-11-18 18:41:32,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285714285714286 [2022-11-18 18:41:32,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2022-11-18 18:41:32,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2022-11-18 18:41:32,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:32,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2022-11-18 18:41:32,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2022-11-18 18:41:32,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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) [2022-11-18 18:41:32,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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) [2022-11-18 18:41:32,026 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 383 flow. Second operand 4 states and 416 transitions. [2022-11-18 18:41:32,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 137 transitions, 517 flow [2022-11-18 18:41:32,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 137 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:41:32,037 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 441 flow [2022-11-18 18:41:32,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=441, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2022-11-18 18:41:32,040 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 17 predicate places. [2022-11-18 18:41:32,040 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 441 flow [2022-11-18 18:41:32,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2022-11-18 18:41:32,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:32,041 INFO L209 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] [2022-11-18 18:41:32,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:41:32,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1149119989, now seen corresponding path program 1 times [2022-11-18 18:41:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:32,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962649298] [2022-11-18 18:41:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:32,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:32,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962649298] [2022-11-18 18:41:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962649298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:32,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:32,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:41:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612120623] [2022-11-18 18:41:32,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:41:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:41:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:41:32,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-18 18:41:32,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2022-11-18 18:41:32,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:32,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-18 18:41:32,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:33,333 INFO L130 PetriNetUnfolder]: 1613/4010 cut-off events. [2022-11-18 18:41:33,333 INFO L131 PetriNetUnfolder]: For 4798/4805 co-relation queries the response was YES. [2022-11-18 18:41:33,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10835 conditions, 4010 events. 1613/4010 cut-off events. For 4798/4805 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36874 event pairs, 401 based on Foata normal form. 0/3916 useless extension candidates. Maximal degree in co-relation 10228. Up to 724 conditions per place. [2022-11-18 18:41:33,369 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 120 selfloop transitions, 47 changer transitions 42/275 dead transitions. [2022-11-18 18:41:33,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 275 transitions, 1651 flow [2022-11-18 18:41:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:41:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:41:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 950 transitions. [2022-11-18 18:41:33,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2022-11-18 18:41:33,382 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 950 transitions. [2022-11-18 18:41:33,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 950 transitions. [2022-11-18 18:41:33,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:33,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 950 transitions. [2022-11-18 18:41:33,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 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) [2022-11-18 18:41:33,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-18 18:41:33,391 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-18 18:41:33,391 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 441 flow. Second operand 10 states and 950 transitions. [2022-11-18 18:41:33,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 275 transitions, 1651 flow [2022-11-18 18:41:33,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 275 transitions, 1651 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:41:33,418 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 862 flow [2022-11-18 18:41:33,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2022-11-18 18:41:33,419 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 34 predicate places. [2022-11-18 18:41:33,420 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 862 flow [2022-11-18 18:41:33,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2022-11-18 18:41:33,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:33,420 INFO L209 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] [2022-11-18 18:41:33,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:41:33,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:33,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1910529791, now seen corresponding path program 1 times [2022-11-18 18:41:33,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:33,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463300959] [2022-11-18 18:41:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:33,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:33,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:33,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463300959] [2022-11-18 18:41:33,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463300959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:33,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:33,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:41:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205846955] [2022-11-18 18:41:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:33,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:41:33,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:41:33,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:41:33,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-18 18:41:33,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2022-11-18 18:41:33,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:33,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-18 18:41:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:34,634 INFO L130 PetriNetUnfolder]: 1388/3770 cut-off events. [2022-11-18 18:41:34,635 INFO L131 PetriNetUnfolder]: For 6689/6691 co-relation queries the response was YES. [2022-11-18 18:41:34,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11911 conditions, 3770 events. 1388/3770 cut-off events. For 6689/6691 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35807 event pairs, 304 based on Foata normal form. 38/3762 useless extension candidates. Maximal degree in co-relation 11237. Up to 588 conditions per place. [2022-11-18 18:41:34,672 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 109 selfloop transitions, 55 changer transitions 10/240 dead transitions. [2022-11-18 18:41:34,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 240 transitions, 1682 flow [2022-11-18 18:41:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:41:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:41:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 842 transitions. [2022-11-18 18:41:34,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353174603174603 [2022-11-18 18:41:34,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 842 transitions. [2022-11-18 18:41:34,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 842 transitions. [2022-11-18 18:41:34,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:34,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 842 transitions. [2022-11-18 18:41:34,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.55555555555556) internal successors, (842), 9 states have internal predecessors, (842), 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) [2022-11-18 18:41:34,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-18 18:41:34,688 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-18 18:41:34,688 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 862 flow. Second operand 9 states and 842 transitions. [2022-11-18 18:41:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 240 transitions, 1682 flow [2022-11-18 18:41:34,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 240 transitions, 1662 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 18:41:34,738 INFO L231 Difference]: Finished difference. Result has 151 places, 173 transitions, 1130 flow [2022-11-18 18:41:34,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=151, PETRI_TRANSITIONS=173} [2022-11-18 18:41:34,742 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 46 predicate places. [2022-11-18 18:41:34,742 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 173 transitions, 1130 flow [2022-11-18 18:41:34,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2022-11-18 18:41:34,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:34,743 INFO L209 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] [2022-11-18 18:41:34,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:41:34,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:34,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1123190917, now seen corresponding path program 1 times [2022-11-18 18:41:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:34,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805746391] [2022-11-18 18:41:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:34,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:34,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805746391] [2022-11-18 18:41:34,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805746391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:34,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:34,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:41:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251211595] [2022-11-18 18:41:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:41:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:41:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:41:34,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-18 18:41:34,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 173 transitions, 1130 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2022-11-18 18:41:34,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:34,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-18 18:41:34,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:36,224 INFO L130 PetriNetUnfolder]: 1491/3962 cut-off events. [2022-11-18 18:41:36,225 INFO L131 PetriNetUnfolder]: For 9153/9160 co-relation queries the response was YES. [2022-11-18 18:41:36,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13274 conditions, 3962 events. 1491/3962 cut-off events. For 9153/9160 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37369 event pairs, 363 based on Foata normal form. 46/3945 useless extension candidates. Maximal degree in co-relation 12010. Up to 736 conditions per place. [2022-11-18 18:41:36,277 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 118 selfloop transitions, 62 changer transitions 18/267 dead transitions. [2022-11-18 18:41:36,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 267 transitions, 2104 flow [2022-11-18 18:41:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:41:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:41:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 853 transitions. [2022-11-18 18:41:36,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8462301587301587 [2022-11-18 18:41:36,282 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 853 transitions. [2022-11-18 18:41:36,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 853 transitions. [2022-11-18 18:41:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:36,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 853 transitions. [2022-11-18 18:41:36,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.77777777777777) internal successors, (853), 9 states have internal predecessors, (853), 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) [2022-11-18 18:41:36,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-18 18:41:36,290 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-18 18:41:36,291 INFO L175 Difference]: Start difference. First operand has 151 places, 173 transitions, 1130 flow. Second operand 9 states and 853 transitions. [2022-11-18 18:41:36,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 267 transitions, 2104 flow [2022-11-18 18:41:36,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 267 transitions, 2088 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-18 18:41:36,365 INFO L231 Difference]: Finished difference. Result has 164 places, 187 transitions, 1462 flow [2022-11-18 18:41:36,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=164, PETRI_TRANSITIONS=187} [2022-11-18 18:41:36,366 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 59 predicate places. [2022-11-18 18:41:36,367 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 187 transitions, 1462 flow [2022-11-18 18:41:36,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2022-11-18 18:41:36,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:36,368 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:36,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:41:36,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:36,369 INFO L85 PathProgramCache]: Analyzing trace with hash -939965522, now seen corresponding path program 1 times [2022-11-18 18:41:36,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:36,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035116254] [2022-11-18 18:41:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:36,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035116254] [2022-11-18 18:41:36,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035116254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:36,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:36,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:41:36,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51648301] [2022-11-18 18:41:36,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:36,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:41:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:41:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:41:36,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2022-11-18 18:41:36,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 187 transitions, 1462 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2022-11-18 18:41:36,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:36,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2022-11-18 18:41:36,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:36,995 INFO L130 PetriNetUnfolder]: 270/1876 cut-off events. [2022-11-18 18:41:36,996 INFO L131 PetriNetUnfolder]: For 4476/4584 co-relation queries the response was YES. [2022-11-18 18:41:37,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5804 conditions, 1876 events. 270/1876 cut-off events. For 4476/4584 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18518 event pairs, 52 based on Foata normal form. 93/1955 useless extension candidates. Maximal degree in co-relation 5661. Up to 171 conditions per place. [2022-11-18 18:41:37,017 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 18 selfloop transitions, 8 changer transitions 24/176 dead transitions. [2022-11-18 18:41:37,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 176 transitions, 1192 flow [2022-11-18 18:41:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:41:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:41:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 511 transitions. [2022-11-18 18:41:37,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9125 [2022-11-18 18:41:37,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 511 transitions. [2022-11-18 18:41:37,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 511 transitions. [2022-11-18 18:41:37,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:37,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 511 transitions. [2022-11-18 18:41:37,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 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) [2022-11-18 18:41:37,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:37,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:37,025 INFO L175 Difference]: Start difference. First operand has 164 places, 187 transitions, 1462 flow. Second operand 5 states and 511 transitions. [2022-11-18 18:41:37,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 176 transitions, 1192 flow [2022-11-18 18:41:37,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 176 transitions, 1115 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-18 18:41:37,061 INFO L231 Difference]: Finished difference. Result has 164 places, 145 transitions, 852 flow [2022-11-18 18:41:37,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=164, PETRI_TRANSITIONS=145} [2022-11-18 18:41:37,062 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 59 predicate places. [2022-11-18 18:41:37,063 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 145 transitions, 852 flow [2022-11-18 18:41:37,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2022-11-18 18:41:37,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:41:37,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:37,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:41:37,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:41:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1272096156, now seen corresponding path program 2 times [2022-11-18 18:41:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:37,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841389556] [2022-11-18 18:41:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:37,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841389556] [2022-11-18 18:41:37,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841389556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:37,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:37,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:41:37,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722863140] [2022-11-18 18:41:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:37,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:41:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:41:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:41:37,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2022-11-18 18:41:37,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 145 transitions, 852 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2022-11-18 18:41:37,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:41:37,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2022-11-18 18:41:37,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:41:37,460 INFO L130 PetriNetUnfolder]: 81/675 cut-off events. [2022-11-18 18:41:37,460 INFO L131 PetriNetUnfolder]: For 1642/1648 co-relation queries the response was YES. [2022-11-18 18:41:37,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 675 events. 81/675 cut-off events. For 1642/1648 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4614 event pairs, 26 based on Foata normal form. 11/681 useless extension candidates. Maximal degree in co-relation 2207. Up to 80 conditions per place. [2022-11-18 18:41:37,467 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 0 selfloop transitions, 0 changer transitions 116/116 dead transitions. [2022-11-18 18:41:37,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 116 transitions, 564 flow [2022-11-18 18:41:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:41:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:41:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 505 transitions. [2022-11-18 18:41:37,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-11-18 18:41:37,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 505 transitions. [2022-11-18 18:41:37,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 505 transitions. [2022-11-18 18:41:37,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:41:37,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 505 transitions. [2022-11-18 18:41:37,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:37,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:37,475 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:37,475 INFO L175 Difference]: Start difference. First operand has 164 places, 145 transitions, 852 flow. Second operand 5 states and 505 transitions. [2022-11-18 18:41:37,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 116 transitions, 564 flow [2022-11-18 18:41:37,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 116 transitions, 464 flow, removed 14 selfloop flow, removed 21 redundant places. [2022-11-18 18:41:37,486 INFO L231 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2022-11-18 18:41:37,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2022-11-18 18:41:37,487 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 29 predicate places. [2022-11-18 18:41:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2022-11-18 18:41:37,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2022-11-18 18:41:37,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-11-18 18:41:37,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2022-11-18 18:41:37,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-18 18:41:37,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-18 18:41:37,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-18 18:41:37,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-18 18:41:37,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-18 18:41:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:41:37,494 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-11-18 18:41:37,502 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:41:37,502 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:41:37,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:41:37 BasicIcfg [2022-11-18 18:41:37,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:41:37,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:41:37,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:41:37,510 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:41:37,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:41:27" (3/4) ... [2022-11-18 18:41:37,514 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:41:37,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-11-18 18:41:37,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-11-18 18:41:37,531 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-18 18:41:37,531 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 18:41:37,532 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:41:37,532 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:41:37,596 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:41:37,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:41:37,597 INFO L158 Benchmark]: Toolchain (without parser) took 11912.47ms. Allocated memory was 111.1MB in the beginning and 742.4MB in the end (delta: 631.2MB). Free memory was 73.0MB in the beginning and 392.5MB in the end (delta: -319.5MB). Peak memory consumption was 310.6MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,598 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:41:37,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 687.69ms. Allocated memory is still 111.1MB. Free memory was 72.8MB in the beginning and 77.3MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.34ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 74.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,599 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 111.1MB. Free memory was 74.8MB in the beginning and 73.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,599 INFO L158 Benchmark]: RCFGBuilder took 694.44ms. Allocated memory is still 111.1MB. Free memory was 73.1MB in the beginning and 56.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,599 INFO L158 Benchmark]: TraceAbstraction took 10330.21ms. Allocated memory was 111.1MB in the beginning and 742.4MB in the end (delta: 631.2MB). Free memory was 56.4MB in the beginning and 394.6MB in the end (delta: -338.2MB). Peak memory consumption was 294.0MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,600 INFO L158 Benchmark]: Witness Printer took 87.11ms. Allocated memory is still 742.4MB. Free memory was 394.6MB in the beginning and 392.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:41:37,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 687.69ms. Allocated memory is still 111.1MB. Free memory was 72.8MB in the beginning and 77.3MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.34ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 74.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 111.1MB. Free memory was 74.8MB in the beginning and 73.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 694.44ms. Allocated memory is still 111.1MB. Free memory was 73.1MB in the beginning and 56.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10330.21ms. Allocated memory was 111.1MB in the beginning and 742.4MB in the end (delta: 631.2MB). Free memory was 56.4MB in the beginning and 394.6MB in the end (delta: -338.2MB). Peak memory consumption was 294.0MB. Max. memory is 16.1GB. * Witness Printer took 87.11ms. Allocated memory is still 742.4MB. Free memory was 394.6MB in the beginning and 392.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 136 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: 10.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 434 mSDsluCounter, 247 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1274 IncrementalHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 107 mSDtfsCounter, 1274 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1462occurred in iteration=6, InterpolantAutomatonStates: 55, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 692 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 18:41:37,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba1adf1-48cb-4871-9e5c-a17ba40dece3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE