./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN --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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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-6b4ec56 [2022-11-20 10:55:40,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:55:40,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:55:40,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:55:40,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:55:40,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:55:40,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:55:40,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:55:40,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:55:40,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:55:40,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:55:40,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:55:40,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:55:40,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:55:40,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:55:40,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:55:40,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:55:40,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:55:40,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:55:40,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:55:40,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:55:40,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:55:40,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:55:40,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:55:40,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:55:40,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:55:40,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:55:40,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:55:40,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:55:40,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:55:40,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:55:40,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:55:40,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:55:40,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:55:40,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:55:40,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:55:40,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:55:40,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:55:40,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:55:40,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:55:40,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:55:40,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:55:40,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:55:40,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:55:40,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:55:40,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:55:40,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:55:40,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:55:40,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:55:40,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:55:40,282 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:55:40,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:55:40,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:55:40,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:55:40,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:55:40,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:55:40,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:55:40,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:55:40,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:55:40,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:55:40,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:55:40,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:55:40,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:55:40,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:55:40,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:55:40,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:55:40,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:40,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:55:40,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:55:40,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:55:40,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:55:40,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:55:40,289 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:55:40,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:55:40,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:55:40,290 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_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-20 10:55:40,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:55:40,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:55:40,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:55:40,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:55:40,673 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:55:40,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-20 10:55:44,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:55:44,349 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:55:44,350 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-20 10:55:44,359 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/data/760c9a92a/a0833410e5f349fd9bb369ebfc626268/FLAG00bd9fc70 [2022-11-20 10:55:44,376 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/data/760c9a92a/a0833410e5f349fd9bb369ebfc626268 [2022-11-20 10:55:44,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:55:44,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:55:44,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:44,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:55:44,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:55:44,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322f93d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44, skipping insertion in model container [2022-11-20 10:55:44,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:55:44,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:55:44,678 WARN L237 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_fbbccff6-9fa6-45fd-9618-350537be1302/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-20 10:55:44,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:44,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:55:44,778 WARN L237 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_fbbccff6-9fa6-45fd-9618-350537be1302/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-20 10:55:44,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:44,802 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:55:44,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44 WrapperNode [2022-11-20 10:55:44,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:44,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:44,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:55:44,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:55:44,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,916 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-20 10:55:44,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:44,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:55:44,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:55:44,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:55:44,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:55:44,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:55:44,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:55:44,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:55:44,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (1/1) ... [2022-11-20 10:55:44,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:45,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:45,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:55:45,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:55:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:55:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:55:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:55:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:55:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:55:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:55:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:55:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:55:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:55:45,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:55:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:55:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:55:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:55:45,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:55:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:55:45,134 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:55:45,370 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:55:45,373 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:55:46,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:55:46,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:55:46,864 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:55:46,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:46 BoogieIcfgContainer [2022-11-20 10:55:46,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:55:46,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:55:46,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:55:46,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:55:46,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:55:44" (1/3) ... [2022-11-20 10:55:46,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d2046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:46, skipping insertion in model container [2022-11-20 10:55:46,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:44" (2/3) ... [2022-11-20 10:55:46,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d2046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:46, skipping insertion in model container [2022-11-20 10:55:46,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:46" (3/3) ... [2022-11-20 10:55:46,879 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-20 10:55:46,891 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:55:46,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:55:46,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:55:46,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:55:47,141 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:55:47,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-20 10:55:47,948 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-20 10:55:47,949 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:55:47,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-20 10:55:47,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-20 10:55:48,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-20 10:55:48,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:55:48,042 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;@641b9b14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:55:48,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 10:55:48,400 INFO L130 PetriNetUnfolder]: 73/746 cut-off events. [2022-11-20 10:55:48,400 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:55:48,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:48,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:48,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1540408722, now seen corresponding path program 1 times [2022-11-20 10:55:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:48,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033673218] [2022-11-20 10:55:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:48,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:48,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033673218] [2022-11-20 10:55:48,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033673218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:48,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:48,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92443238] [2022-11-20 10:55:48,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:55:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:55:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:55:49,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 761 [2022-11-20 10:55:49,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 747 transitions, 1512 flow. Second operand has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 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) [2022-11-20 10:55:49,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:49,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 761 [2022-11-20 10:55:49,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:49,408 INFO L130 PetriNetUnfolder]: 36/710 cut-off events. [2022-11-20 10:55:49,409 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-20 10:55:49,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 710 events. 36/710 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2657 event pairs, 0 based on Foata normal form. 60/703 useless extension candidates. Maximal degree in co-relation 534. Up to 7 conditions per place. [2022-11-20 10:55:49,439 INFO L137 encePairwiseOnDemand]: 724/761 looper letters, 6 selfloop transitions, 0 changer transitions 7/710 dead transitions. [2022-11-20 10:55:49,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 710 transitions, 1450 flow [2022-11-20 10:55:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:55:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:55:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1477 transitions. [2022-11-20 10:55:49,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9704336399474376 [2022-11-20 10:55:49,471 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1477 transitions. [2022-11-20 10:55:49,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1477 transitions. [2022-11-20 10:55:49,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:49,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1477 transitions. [2022-11-20 10:55:49,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 738.5) internal successors, (1477), 2 states have internal predecessors, (1477), 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) [2022-11-20 10:55:49,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 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) [2022-11-20 10:55:49,508 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 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) [2022-11-20 10:55:49,511 INFO L175 Difference]: Start difference. First operand has 684 places, 747 transitions, 1512 flow. Second operand 2 states and 1477 transitions. [2022-11-20 10:55:49,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 710 transitions, 1450 flow [2022-11-20 10:55:49,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 710 transitions, 1438 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:55:49,545 INFO L231 Difference]: Finished difference. Result has 679 places, 703 transitions, 1412 flow [2022-11-20 10:55:49,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1412, PETRI_PLACES=679, PETRI_TRANSITIONS=703} [2022-11-20 10:55:49,557 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-20 10:55:49,558 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 703 transitions, 1412 flow [2022-11-20 10:55:49,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 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) [2022-11-20 10:55:49,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:49,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:49,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:55:49,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash 10790097, now seen corresponding path program 1 times [2022-11-20 10:55:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:49,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579037993] [2022-11-20 10:55:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:50,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:50,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579037993] [2022-11-20 10:55:50,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579037993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:50,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:50,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:50,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767680044] [2022-11-20 10:55:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:50,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:50,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:50,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:50,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:55:50,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 703 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-20 10:55:50,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:50,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:55:50,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:51,479 INFO L130 PetriNetUnfolder]: 274/3060 cut-off events. [2022-11-20 10:55:51,479 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-20 10:55:51,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 3060 events. 274/3060 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 28303 event pairs, 96 based on Foata normal form. 0/2750 useless extension candidates. Maximal degree in co-relation 3377. Up to 185 conditions per place. [2022-11-20 10:55:51,581 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 33 selfloop transitions, 2 changer transitions 0/718 dead transitions. [2022-11-20 10:55:51,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 718 transitions, 1517 flow [2022-11-20 10:55:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:55:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-20 10:55:51,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-20 10:55:51,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-20 10:55:51,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-20 10:55:51,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:51,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-20 10:55:51,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-20 10:55:51,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:51,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:51,609 INFO L175 Difference]: Start difference. First operand has 679 places, 703 transitions, 1412 flow. Second operand 3 states and 2146 transitions. [2022-11-20 10:55:51,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 718 transitions, 1517 flow [2022-11-20 10:55:51,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 718 transitions, 1517 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:55:51,624 INFO L231 Difference]: Finished difference. Result has 676 places, 705 transitions, 1432 flow [2022-11-20 10:55:51,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1432, PETRI_PLACES=676, PETRI_TRANSITIONS=705} [2022-11-20 10:55:51,626 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -8 predicate places. [2022-11-20 10:55:51,626 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 705 transitions, 1432 flow [2022-11-20 10:55:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-20 10:55:51,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:51,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:55:51,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1112876859, now seen corresponding path program 2 times [2022-11-20 10:55:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928804068] [2022-11-20 10:55:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:51,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928804068] [2022-11-20 10:55:51,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928804068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:51,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:51,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142324514] [2022-11-20 10:55:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:51,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:51,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:55:51,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 705 transitions, 1432 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-20 10:55:51,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:51,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:55:51,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:53,312 INFO L130 PetriNetUnfolder]: 288/3350 cut-off events. [2022-11-20 10:55:53,312 INFO L131 PetriNetUnfolder]: For 112/121 co-relation queries the response was YES. [2022-11-20 10:55:53,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 3350 events. 288/3350 cut-off events. For 112/121 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 30977 event pairs, 98 based on Foata normal form. 6/3065 useless extension candidates. Maximal degree in co-relation 3752. Up to 201 conditions per place. [2022-11-20 10:55:53,419 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 33 selfloop transitions, 4 changer transitions 0/720 dead transitions. [2022-11-20 10:55:53,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 720 transitions, 1545 flow [2022-11-20 10:55:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:55:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-20 10:55:53,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-20 10:55:53,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-20 10:55:53,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-20 10:55:53,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:53,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-20 10:55:53,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-20 10:55:53,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:53,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:53,442 INFO L175 Difference]: Start difference. First operand has 676 places, 705 transitions, 1432 flow. Second operand 3 states and 2146 transitions. [2022-11-20 10:55:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 720 transitions, 1545 flow [2022-11-20 10:55:53,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 720 transitions, 1543 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:53,458 INFO L231 Difference]: Finished difference. Result has 679 places, 707 transitions, 1462 flow [2022-11-20 10:55:53,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1462, PETRI_PLACES=679, PETRI_TRANSITIONS=707} [2022-11-20 10:55:53,461 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-20 10:55:53,461 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 707 transitions, 1462 flow [2022-11-20 10:55:53,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-20 10:55:53,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:53,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:53,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:55:53,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1716266549, now seen corresponding path program 1 times [2022-11-20 10:55:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064716310] [2022-11-20 10:55:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:53,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064716310] [2022-11-20 10:55:53,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064716310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:53,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:53,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289158515] [2022-11-20 10:55:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:53,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:55:53,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 707 transitions, 1462 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:53,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:53,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:55:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:55,664 INFO L130 PetriNetUnfolder]: 575/5502 cut-off events. [2022-11-20 10:55:55,665 INFO L131 PetriNetUnfolder]: For 420/496 co-relation queries the response was YES. [2022-11-20 10:55:55,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 5502 events. 575/5502 cut-off events. For 420/496 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 57324 event pairs, 210 based on Foata normal form. 4/4914 useless extension candidates. Maximal degree in co-relation 6210. Up to 401 conditions per place. [2022-11-20 10:55:55,779 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 34 selfloop transitions, 3 changer transitions 0/722 dead transitions. [2022-11-20 10:55:55,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 722 transitions, 1580 flow [2022-11-20 10:55:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:55:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-20 10:55:55,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-20 10:55:55,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-20 10:55:55,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-20 10:55:55,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:55,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-20 10:55:55,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 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) [2022-11-20 10:55:55,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:55,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:55,811 INFO L175 Difference]: Start difference. First operand has 679 places, 707 transitions, 1462 flow. Second operand 3 states and 2145 transitions. [2022-11-20 10:55:55,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 722 transitions, 1580 flow [2022-11-20 10:55:55,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 722 transitions, 1564 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 10:55:55,833 INFO L231 Difference]: Finished difference. Result has 681 places, 710 transitions, 1486 flow [2022-11-20 10:55:55,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1486, PETRI_PLACES=681, PETRI_TRANSITIONS=710} [2022-11-20 10:55:55,836 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -3 predicate places. [2022-11-20 10:55:55,837 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 710 transitions, 1486 flow [2022-11-20 10:55:55,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:55,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:55,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:55:55,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 195838855, now seen corresponding path program 1 times [2022-11-20 10:55:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:55,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585403070] [2022-11-20 10:55:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:56,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585403070] [2022-11-20 10:55:56,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585403070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:56,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:56,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412105027] [2022-11-20 10:55:56,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:56,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:56,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:55:56,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 710 transitions, 1486 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:56,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:56,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:55:56,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:57,330 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2345] thread2EXIT-->L160-2: Formula: (and (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][524], [701#true, Black: 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 704#true, 722#true, 621#L160-2true, Black: 712#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 716#true, 415#L123-6true, 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0))]) [2022-11-20 10:55:57,331 INFO L383 tUnfolder$Statistics]: this new event has 232 ancestors and is cut-off event [2022-11-20 10:55:57,331 INFO L386 tUnfolder$Statistics]: existing Event has 239 ancestors and is cut-off event [2022-11-20 10:55:57,332 INFO L386 tUnfolder$Statistics]: existing Event has 241 ancestors and is cut-off event [2022-11-20 10:55:57,332 INFO L386 tUnfolder$Statistics]: existing Event has 232 ancestors and is cut-off event [2022-11-20 10:55:57,412 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2346] thread3EXIT-->L161-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][703], [701#true, Black: 716#true, Black: 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 527#L161-2true, 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 710#true, 724#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0))]) [2022-11-20 10:55:57,412 INFO L383 tUnfolder$Statistics]: this new event has 241 ancestors and is not cut-off event [2022-11-20 10:55:57,412 INFO L386 tUnfolder$Statistics]: existing Event has 265 ancestors and is not cut-off event [2022-11-20 10:55:57,412 INFO L386 tUnfolder$Statistics]: existing Event has 243 ancestors and is not cut-off event [2022-11-20 10:55:57,413 INFO L386 tUnfolder$Statistics]: existing Event has 250 ancestors and is not cut-off event [2022-11-20 10:55:57,473 INFO L130 PetriNetUnfolder]: 252/3123 cut-off events. [2022-11-20 10:55:57,473 INFO L131 PetriNetUnfolder]: For 345/408 co-relation queries the response was YES. [2022-11-20 10:55:57,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 3123 events. 252/3123 cut-off events. For 345/408 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29016 event pairs, 79 based on Foata normal form. 10/2887 useless extension candidates. Maximal degree in co-relation 3650. Up to 195 conditions per place. [2022-11-20 10:55:57,581 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 36 selfloop transitions, 3 changer transitions 0/726 dead transitions. [2022-11-20 10:55:57,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 726 transitions, 1609 flow [2022-11-20 10:55:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:55:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-20 10:55:57,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-20 10:55:57,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-20 10:55:57,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-20 10:55:57,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:57,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-20 10:55:57,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-20 10:55:57,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:57,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:57,604 INFO L175 Difference]: Start difference. First operand has 681 places, 710 transitions, 1486 flow. Second operand 3 states and 2146 transitions. [2022-11-20 10:55:57,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 726 transitions, 1609 flow [2022-11-20 10:55:57,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 726 transitions, 1606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:57,623 INFO L231 Difference]: Finished difference. Result has 684 places, 713 transitions, 1523 flow [2022-11-20 10:55:57,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1523, PETRI_PLACES=684, PETRI_TRANSITIONS=713} [2022-11-20 10:55:57,627 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 0 predicate places. [2022-11-20 10:55:57,628 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 713 transitions, 1523 flow [2022-11-20 10:55:57,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:57,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:57,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:55:57,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 780397969, now seen corresponding path program 2 times [2022-11-20 10:55:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:57,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613391474] [2022-11-20 10:55:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:57,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613391474] [2022-11-20 10:55:57,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613391474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:57,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:57,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:57,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625864390] [2022-11-20 10:55:57,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:57,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:57,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:57,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:57,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:57,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:55:57,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 713 transitions, 1523 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:57,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:57,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:55:57,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:58,988 INFO L130 PetriNetUnfolder]: 222/2779 cut-off events. [2022-11-20 10:55:58,989 INFO L131 PetriNetUnfolder]: For 524/584 co-relation queries the response was YES. [2022-11-20 10:55:59,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 2779 events. 222/2779 cut-off events. For 524/584 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 24829 event pairs, 76 based on Foata normal form. 6/2578 useless extension candidates. Maximal degree in co-relation 3399. Up to 187 conditions per place. [2022-11-20 10:55:59,112 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 36 selfloop transitions, 6 changer transitions 0/728 dead transitions. [2022-11-20 10:55:59,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 728 transitions, 1654 flow [2022-11-20 10:55:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:55:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-20 10:55:59,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-20 10:55:59,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-20 10:55:59,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-20 10:55:59,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:59,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-20 10:55:59,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-20 10:55:59,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:59,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:55:59,149 INFO L175 Difference]: Start difference. First operand has 684 places, 713 transitions, 1523 flow. Second operand 3 states and 2146 transitions. [2022-11-20 10:55:59,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 728 transitions, 1654 flow [2022-11-20 10:55:59,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 728 transitions, 1651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:59,181 INFO L231 Difference]: Finished difference. Result has 687 places, 715 transitions, 1572 flow [2022-11-20 10:55:59,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1572, PETRI_PLACES=687, PETRI_TRANSITIONS=715} [2022-11-20 10:55:59,186 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 3 predicate places. [2022-11-20 10:55:59,186 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 715 transitions, 1572 flow [2022-11-20 10:55:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:59,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:59,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:55:59,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:55:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1401565433, now seen corresponding path program 2 times [2022-11-20 10:55:59,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:59,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662446375] [2022-11-20 10:55:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:59,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:59,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662446375] [2022-11-20 10:55:59,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662446375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:59,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:59,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943615783] [2022-11-20 10:55:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:59,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:59,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:59,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:55:59,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 715 transitions, 1572 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:55:59,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:59,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:55:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:01,769 INFO L130 PetriNetUnfolder]: 603/6728 cut-off events. [2022-11-20 10:56:01,769 INFO L131 PetriNetUnfolder]: For 862/973 co-relation queries the response was YES. [2022-11-20 10:56:01,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 6728 events. 603/6728 cut-off events. For 862/973 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 74469 event pairs, 219 based on Foata normal form. 13/6102 useless extension candidates. Maximal degree in co-relation 7720. Up to 422 conditions per place. [2022-11-20 10:56:01,949 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 34 selfloop transitions, 6 changer transitions 0/727 dead transitions. [2022-11-20 10:56:01,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 727 transitions, 1684 flow [2022-11-20 10:56:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-20 10:56:01,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-20 10:56:01,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-20 10:56:01,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-20 10:56:01,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:01,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-20 10:56:01,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 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) [2022-11-20 10:56:01,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:01,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:01,974 INFO L175 Difference]: Start difference. First operand has 687 places, 715 transitions, 1572 flow. Second operand 3 states and 2145 transitions. [2022-11-20 10:56:01,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 727 transitions, 1684 flow [2022-11-20 10:56:01,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 727 transitions, 1668 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:01,995 INFO L231 Difference]: Finished difference. Result has 689 places, 715 transitions, 1596 flow [2022-11-20 10:56:01,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=689, PETRI_TRANSITIONS=715} [2022-11-20 10:56:01,999 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 5 predicate places. [2022-11-20 10:56:01,999 INFO L495 AbstractCegarLoop]: Abstraction has has 689 places, 715 transitions, 1596 flow [2022-11-20 10:56:02,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-20 10:56:02,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:02,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:02,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:56:02,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:02,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2086372397, now seen corresponding path program 1 times [2022-11-20 10:56:02,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:02,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625765223] [2022-11-20 10:56:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:02,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625765223] [2022-11-20 10:56:02,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625765223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:02,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:02,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649070465] [2022-11-20 10:56:02,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:02,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 684 out of 761 [2022-11-20 10:56:02,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 715 transitions, 1596 flow. Second operand has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 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) [2022-11-20 10:56:02,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:02,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 684 of 761 [2022-11-20 10:56:02,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:02,908 INFO L130 PetriNetUnfolder]: 36/946 cut-off events. [2022-11-20 10:56:02,908 INFO L131 PetriNetUnfolder]: For 135/170 co-relation queries the response was YES. [2022-11-20 10:56:02,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 946 events. 36/946 cut-off events. For 135/170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4779 event pairs, 0 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1106. Up to 55 conditions per place. [2022-11-20 10:56:02,940 INFO L137 encePairwiseOnDemand]: 746/761 looper letters, 39 selfloop transitions, 12 changer transitions 0/727 dead transitions. [2022-11-20 10:56:02,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 727 transitions, 1722 flow [2022-11-20 10:56:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:56:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3474 transitions. [2022-11-20 10:56:02,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130091984231274 [2022-11-20 10:56:02,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3474 transitions. [2022-11-20 10:56:02,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3474 transitions. [2022-11-20 10:56:02,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:02,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3474 transitions. [2022-11-20 10:56:02,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 694.8) internal successors, (3474), 5 states have internal predecessors, (3474), 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) [2022-11-20 10:56:02,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 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) [2022-11-20 10:56:02,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 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) [2022-11-20 10:56:02,975 INFO L175 Difference]: Start difference. First operand has 689 places, 715 transitions, 1596 flow. Second operand 5 states and 3474 transitions. [2022-11-20 10:56:02,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 727 transitions, 1722 flow [2022-11-20 10:56:02,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 727 transitions, 1706 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:02,994 INFO L231 Difference]: Finished difference. Result has 692 places, 718 transitions, 1628 flow [2022-11-20 10:56:02,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1628, PETRI_PLACES=692, PETRI_TRANSITIONS=718} [2022-11-20 10:56:02,996 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 8 predicate places. [2022-11-20 10:56:02,997 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 718 transitions, 1628 flow [2022-11-20 10:56:02,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 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) [2022-11-20 10:56:02,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:02,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:02,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:56:02,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:03,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1555615525, now seen corresponding path program 1 times [2022-11-20 10:56:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:03,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290636993] [2022-11-20 10:56:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:03,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:56:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:03,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290636993] [2022-11-20 10:56:03,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290636993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:03,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091890828] [2022-11-20 10:56:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:03,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:03,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:03,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:03,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:56:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:56:03,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:56:04,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:56:04,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091890828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:04,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:04,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 10:56:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956823366] [2022-11-20 10:56:04,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:04,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:56:04,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:56:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:56:04,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-20 10:56:04,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 718 transitions, 1628 flow. Second operand has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 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) [2022-11-20 10:56:04,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:04,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-20 10:56:04,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:04,952 INFO L130 PetriNetUnfolder]: 36/970 cut-off events. [2022-11-20 10:56:04,952 INFO L131 PetriNetUnfolder]: For 123/157 co-relation queries the response was YES. [2022-11-20 10:56:04,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 970 events. 36/970 cut-off events. For 123/157 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4773 event pairs, 0 based on Foata normal form. 6/915 useless extension candidates. Maximal degree in co-relation 1170. Up to 46 conditions per place. [2022-11-20 10:56:04,984 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 42 selfloop transitions, 33 changer transitions 0/748 dead transitions. [2022-11-20 10:56:04,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 748 transitions, 1844 flow [2022-11-20 10:56:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:56:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:56:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 7572 transitions. [2022-11-20 10:56:05,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9045514275474854 [2022-11-20 10:56:05,001 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 7572 transitions. [2022-11-20 10:56:05,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 7572 transitions. [2022-11-20 10:56:05,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:05,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 7572 transitions. [2022-11-20 10:56:05,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 688.3636363636364) internal successors, (7572), 11 states have internal predecessors, (7572), 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) [2022-11-20 10:56:05,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 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) [2022-11-20 10:56:05,043 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 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) [2022-11-20 10:56:05,043 INFO L175 Difference]: Start difference. First operand has 692 places, 718 transitions, 1628 flow. Second operand 11 states and 7572 transitions. [2022-11-20 10:56:05,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 748 transitions, 1844 flow [2022-11-20 10:56:05,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 748 transitions, 1826 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:05,061 INFO L231 Difference]: Finished difference. Result has 702 places, 736 transitions, 1777 flow [2022-11-20 10:56:05,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1777, PETRI_PLACES=702, PETRI_TRANSITIONS=736} [2022-11-20 10:56:05,064 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 18 predicate places. [2022-11-20 10:56:05,064 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 736 transitions, 1777 flow [2022-11-20 10:56:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 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) [2022-11-20 10:56:05,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:05,070 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:05,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:56:05,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:05,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1710211390, now seen corresponding path program 1 times [2022-11-20 10:56:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:05,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223919911] [2022-11-20 10:56:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:56:05,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223919911] [2022-11-20 10:56:05,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223919911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:05,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982507603] [2022-11-20 10:56:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:05,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:05,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:05,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:56:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:56:06,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:56:06,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:56:06,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982507603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:06,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:06,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 10:56:06,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136245272] [2022-11-20 10:56:06,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:06,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:56:06,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:56:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:56:06,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-20 10:56:06,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 736 transitions, 1777 flow. Second operand has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 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) [2022-11-20 10:56:06,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:06,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-20 10:56:06,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:07,662 INFO L130 PetriNetUnfolder]: 36/1006 cut-off events. [2022-11-20 10:56:07,662 INFO L131 PetriNetUnfolder]: For 175/209 co-relation queries the response was YES. [2022-11-20 10:56:07,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 1006 events. 36/1006 cut-off events. For 175/209 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4756 event pairs, 0 based on Foata normal form. 6/951 useless extension candidates. Maximal degree in co-relation 1337. Up to 46 conditions per place. [2022-11-20 10:56:07,697 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 54 selfloop transitions, 51 changer transitions 0/778 dead transitions. [2022-11-20 10:56:07,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 778 transitions, 2167 flow [2022-11-20 10:56:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:56:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:56:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 11688 transitions. [2022-11-20 10:56:07,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034552059982994 [2022-11-20 10:56:07,722 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 11688 transitions. [2022-11-20 10:56:07,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 11688 transitions. [2022-11-20 10:56:07,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:07,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 11688 transitions. [2022-11-20 10:56:07,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 687.5294117647059) internal successors, (11688), 17 states have internal predecessors, (11688), 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) [2022-11-20 10:56:07,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 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) [2022-11-20 10:56:07,781 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 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) [2022-11-20 10:56:07,781 INFO L175 Difference]: Start difference. First operand has 702 places, 736 transitions, 1777 flow. Second operand 17 states and 11688 transitions. [2022-11-20 10:56:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 778 transitions, 2167 flow [2022-11-20 10:56:07,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 778 transitions, 2130 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:07,798 INFO L231 Difference]: Finished difference. Result has 718 places, 757 transitions, 2015 flow [2022-11-20 10:56:07,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2015, PETRI_PLACES=718, PETRI_TRANSITIONS=757} [2022-11-20 10:56:07,800 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 34 predicate places. [2022-11-20 10:56:07,800 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 757 transitions, 2015 flow [2022-11-20 10:56:07,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 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) [2022-11-20 10:56:07,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:07,807 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:07,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbccff6-9fa6-45fd-9618-350537be1302/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:56:08,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 686667092, now seen corresponding path program 2 times [2022-11-20 10:56:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:08,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587723997] [2022-11-20 10:56:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:56:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:08,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587723997] [2022-11-20 10:56:08,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587723997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:08,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:08,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267830827] [2022-11-20 10:56:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:08,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:08,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:56:08,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 757 transitions, 2015 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-20 10:56:08,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:08,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:56:08,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:09,902 INFO L130 PetriNetUnfolder]: 231/3749 cut-off events. [2022-11-20 10:56:09,903 INFO L131 PetriNetUnfolder]: For 501/619 co-relation queries the response was YES. [2022-11-20 10:56:10,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 3749 events. 231/3749 cut-off events. For 501/619 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 33885 event pairs, 44 based on Foata normal form. 2/3428 useless extension candidates. Maximal degree in co-relation 4477. Up to 132 conditions per place. [2022-11-20 10:56:10,157 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 24 selfloop transitions, 4 changer transitions 0/765 dead transitions. [2022-11-20 10:56:10,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 765 transitions, 2091 flow [2022-11-20 10:56:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2138 transitions. [2022-11-20 10:56:10,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9364870784056066 [2022-11-20 10:56:10,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2138 transitions. [2022-11-20 10:56:10,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2138 transitions. [2022-11-20 10:56:10,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:10,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2138 transitions. [2022-11-20 10:56:10,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.6666666666666) internal successors, (2138), 3 states have internal predecessors, (2138), 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) [2022-11-20 10:56:10,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:10,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:10,186 INFO L175 Difference]: Start difference. First operand has 718 places, 757 transitions, 2015 flow. Second operand 3 states and 2138 transitions. [2022-11-20 10:56:10,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 765 transitions, 2091 flow [2022-11-20 10:56:10,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 765 transitions, 2024 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-20 10:56:10,204 INFO L231 Difference]: Finished difference. Result has 713 places, 758 transitions, 1966 flow [2022-11-20 10:56:10,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1966, PETRI_PLACES=713, PETRI_TRANSITIONS=758} [2022-11-20 10:56:10,206 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 29 predicate places. [2022-11-20 10:56:10,207 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 758 transitions, 1966 flow [2022-11-20 10:56:10,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-20 10:56:10,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:10,209 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:10,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:56:10,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2064020475, now seen corresponding path program 2 times [2022-11-20 10:56:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307715669] [2022-11-20 10:56:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:56:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:10,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307715669] [2022-11-20 10:56:10,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307715669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:10,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:10,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489613981] [2022-11-20 10:56:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:10,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:56:10,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 758 transitions, 1966 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-20 10:56:10,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:10,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:56:10,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:13,048 INFO L130 PetriNetUnfolder]: 318/6374 cut-off events. [2022-11-20 10:56:13,048 INFO L131 PetriNetUnfolder]: For 802/946 co-relation queries the response was YES. [2022-11-20 10:56:13,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7228 conditions, 6374 events. 318/6374 cut-off events. For 802/946 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 64195 event pairs, 22 based on Foata normal form. 2/5827 useless extension candidates. Maximal degree in co-relation 7210. Up to 96 conditions per place. [2022-11-20 10:56:13,271 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 25 selfloop transitions, 4 changer transitions 0/767 dead transitions. [2022-11-20 10:56:13,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 767 transitions, 2047 flow [2022-11-20 10:56:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2139 transitions. [2022-11-20 10:56:13,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9369250985545335 [2022-11-20 10:56:13,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2139 transitions. [2022-11-20 10:56:13,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2139 transitions. [2022-11-20 10:56:13,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:13,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2139 transitions. [2022-11-20 10:56:13,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 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) [2022-11-20 10:56:13,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:13,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:13,299 INFO L175 Difference]: Start difference. First operand has 713 places, 758 transitions, 1966 flow. Second operand 3 states and 2139 transitions. [2022-11-20 10:56:13,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 767 transitions, 2047 flow [2022-11-20 10:56:13,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 767 transitions, 2043 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:56:13,323 INFO L231 Difference]: Finished difference. Result has 715 places, 759 transitions, 1980 flow [2022-11-20 10:56:13,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1980, PETRI_PLACES=715, PETRI_TRANSITIONS=759} [2022-11-20 10:56:13,325 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 31 predicate places. [2022-11-20 10:56:13,325 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 759 transitions, 1980 flow [2022-11-20 10:56:13,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-20 10:56:13,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:13,327 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:56:13,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -91015375, now seen corresponding path program 1 times [2022-11-20 10:56:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:13,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045403767] [2022-11-20 10:56:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:56:13,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:13,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045403767] [2022-11-20 10:56:13,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045403767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:13,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:13,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:13,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821291261] [2022-11-20 10:56:13,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:13,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:13,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-20 10:56:13,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 759 transitions, 1980 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-20 10:56:13,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:13,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-20 10:56:13,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:15,147 INFO L130 PetriNetUnfolder]: 444/4315 cut-off events. [2022-11-20 10:56:15,147 INFO L131 PetriNetUnfolder]: For 511/599 co-relation queries the response was YES. [2022-11-20 10:56:15,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 4315 events. 444/4315 cut-off events. For 511/599 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 40683 event pairs, 198 based on Foata normal form. 0/3776 useless extension candidates. Maximal degree in co-relation 5216. Up to 487 conditions per place. [2022-11-20 10:56:15,227 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 23 selfloop transitions, 4 changer transitions 0/766 dead transitions. [2022-11-20 10:56:15,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 766 transitions, 2051 flow [2022-11-20 10:56:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2137 transitions. [2022-11-20 10:56:15,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9360490582566798 [2022-11-20 10:56:15,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2137 transitions. [2022-11-20 10:56:15,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2137 transitions. [2022-11-20 10:56:15,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:15,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2137 transitions. [2022-11-20 10:56:15,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 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) [2022-11-20 10:56:15,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:15,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-20 10:56:15,247 INFO L175 Difference]: Start difference. First operand has 715 places, 759 transitions, 1980 flow. Second operand 3 states and 2137 transitions. [2022-11-20 10:56:15,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 766 transitions, 2051 flow [2022-11-20 10:56:15,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 766 transitions, 2047 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:56:15,263 INFO L231 Difference]: Finished difference. Result has 717 places, 760 transitions, 1994 flow [2022-11-20 10:56:15,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1994, PETRI_PLACES=717, PETRI_TRANSITIONS=760} [2022-11-20 10:56:15,265 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 33 predicate places. [2022-11-20 10:56:15,266 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 760 transitions, 1994 flow [2022-11-20 10:56:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-20 10:56:15,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:15,267 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:56:15,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2119714508, now seen corresponding path program 1 times [2022-11-20 10:56:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:15,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767079105] [2022-11-20 10:56:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:56:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:15,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767079105] [2022-11-20 10:56:15,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767079105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:15,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:15,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859803754] [2022-11-20 10:56:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:15,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:15,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:15,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 655 out of 761 [2022-11-20 10:56:15,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 760 transitions, 1994 flow. Second operand has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 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) [2022-11-20 10:56:15,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:15,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 655 of 761 [2022-11-20 10:56:15,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:27,303 INFO L130 PetriNetUnfolder]: 5961/35371 cut-off events. [2022-11-20 10:56:27,303 INFO L131 PetriNetUnfolder]: For 2137/2250 co-relation queries the response was YES. [2022-11-20 10:56:27,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44997 conditions, 35371 events. 5961/35371 cut-off events. For 2137/2250 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 503183 event pairs, 3852 based on Foata normal form. 8/31265 useless extension candidates. Maximal degree in co-relation 44977. Up to 6389 conditions per place. [2022-11-20 10:56:27,949 INFO L137 encePairwiseOnDemand]: 753/761 looper letters, 102 selfloop transitions, 5 changer transitions 4/810 dead transitions. [2022-11-20 10:56:27,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 810 transitions, 2325 flow [2022-11-20 10:56:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:56:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:56:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5352 transitions. [2022-11-20 10:56:27,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791064388961892 [2022-11-20 10:56:27,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5352 transitions. [2022-11-20 10:56:27,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5352 transitions. [2022-11-20 10:56:27,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:27,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5352 transitions. [2022-11-20 10:56:27,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 669.0) internal successors, (5352), 8 states have internal predecessors, (5352), 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) [2022-11-20 10:56:27,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 761.0) internal successors, (6849), 9 states have internal predecessors, (6849), 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) [2022-11-20 10:56:28,001 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 761.0) internal successors, (6849), 9 states have internal predecessors, (6849), 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) [2022-11-20 10:56:28,002 INFO L175 Difference]: Start difference. First operand has 717 places, 760 transitions, 1994 flow. Second operand 8 states and 5352 transitions. [2022-11-20 10:56:28,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 810 transitions, 2325 flow [2022-11-20 10:56:28,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 810 transitions, 2321 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:56:28,043 INFO L231 Difference]: Finished difference. Result has 728 places, 762 transitions, 2019 flow [2022-11-20 10:56:28,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2019, PETRI_PLACES=728, PETRI_TRANSITIONS=762} [2022-11-20 10:56:28,046 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 44 predicate places. [2022-11-20 10:56:28,046 INFO L495 AbstractCegarLoop]: Abstraction has has 728 places, 762 transitions, 2019 flow [2022-11-20 10:56:28,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 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) [2022-11-20 10:56:28,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:28,049 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:28,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:56:28,049 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1228615812, now seen corresponding path program 1 times [2022-11-20 10:56:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232355191] [2022-11-20 10:56:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:56:28,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232355191] [2022-11-20 10:56:28,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232355191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:28,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:28,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:56:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797523244] [2022-11-20 10:56:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:28,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:56:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:28,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:56:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:56:28,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-20 10:56:28,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 762 transitions, 2019 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-20 10:56:28,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:28,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-20 10:56:28,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:40,883 INFO L130 PetriNetUnfolder]: 7161/36900 cut-off events. [2022-11-20 10:56:40,883 INFO L131 PetriNetUnfolder]: For 17068/18735 co-relation queries the response was YES. [2022-11-20 10:56:41,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57061 conditions, 36900 events. 7161/36900 cut-off events. For 17068/18735 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 507714 event pairs, 2832 based on Foata normal form. 123/34647 useless extension candidates. Maximal degree in co-relation 57036. Up to 4501 conditions per place. [2022-11-20 10:56:42,074 INFO L137 encePairwiseOnDemand]: 748/761 looper letters, 201 selfloop transitions, 21 changer transitions 2/908 dead transitions. [2022-11-20 10:56:42,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 908 transitions, 3007 flow [2022-11-20 10:56:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:56:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:56:42,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4802 transitions. [2022-11-20 10:56:42,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9014454664914586 [2022-11-20 10:56:42,085 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4802 transitions. [2022-11-20 10:56:42,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4802 transitions. [2022-11-20 10:56:42,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:42,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4802 transitions. [2022-11-20 10:56:42,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 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) [2022-11-20 10:56:42,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-20 10:56:42,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-20 10:56:42,104 INFO L175 Difference]: Start difference. First operand has 728 places, 762 transitions, 2019 flow. Second operand 7 states and 4802 transitions. [2022-11-20 10:56:42,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 908 transitions, 3007 flow [2022-11-20 10:56:42,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 908 transitions, 2998 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 10:56:42,198 INFO L231 Difference]: Finished difference. Result has 733 places, 784 transitions, 2277 flow [2022-11-20 10:56:42,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2277, PETRI_PLACES=733, PETRI_TRANSITIONS=784} [2022-11-20 10:56:42,201 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 49 predicate places. [2022-11-20 10:56:42,201 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 784 transitions, 2277 flow [2022-11-20 10:56:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-20 10:56:42,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:42,205 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:42,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:56:42,206 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash -546603780, now seen corresponding path program 2 times [2022-11-20 10:56:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:42,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67946539] [2022-11-20 10:56:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:42,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:56:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:42,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67946539] [2022-11-20 10:56:42,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67946539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:42,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:42,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:56:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439360272] [2022-11-20 10:56:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:56:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:56:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:56:42,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-20 10:56:42,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 784 transitions, 2277 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-20 10:56:42,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:42,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-20 10:56:42,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:58,829 INFO L130 PetriNetUnfolder]: 7684/51223 cut-off events. [2022-11-20 10:56:58,829 INFO L131 PetriNetUnfolder]: For 27661/29081 co-relation queries the response was YES. [2022-11-20 10:56:59,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75019 conditions, 51223 events. 7684/51223 cut-off events. For 27661/29081 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 775878 event pairs, 5092 based on Foata normal form. 20/48092 useless extension candidates. Maximal degree in co-relation 74992. Up to 8735 conditions per place. [2022-11-20 10:57:00,282 INFO L137 encePairwiseOnDemand]: 744/761 looper letters, 188 selfloop transitions, 12 changer transitions 14/898 dead transitions. [2022-11-20 10:57:00,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 898 transitions, 3011 flow [2022-11-20 10:57:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:57:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4783 transitions. [2022-11-20 10:57:00,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8978787309930543 [2022-11-20 10:57:00,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4783 transitions. [2022-11-20 10:57:00,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4783 transitions. [2022-11-20 10:57:00,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:00,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4783 transitions. [2022-11-20 10:57:00,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 683.2857142857143) internal successors, (4783), 7 states have internal predecessors, (4783), 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) [2022-11-20 10:57:00,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-20 10:57:00,316 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-20 10:57:00,316 INFO L175 Difference]: Start difference. First operand has 733 places, 784 transitions, 2277 flow. Second operand 7 states and 4783 transitions. [2022-11-20 10:57:00,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 898 transitions, 3011 flow [2022-11-20 10:57:00,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 898 transitions, 3011 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:57:00,501 INFO L231 Difference]: Finished difference. Result has 743 places, 786 transitions, 2336 flow [2022-11-20 10:57:00,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=743, PETRI_TRANSITIONS=786} [2022-11-20 10:57:00,503 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 59 predicate places. [2022-11-20 10:57:00,503 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 786 transitions, 2336 flow [2022-11-20 10:57:00,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-20 10:57:00,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:00,505 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:00,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:57:00,505 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1801948532, now seen corresponding path program 3 times [2022-11-20 10:57:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:00,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012221256] [2022-11-20 10:57:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:00,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:57:01,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:01,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012221256] [2022-11-20 10:57:01,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012221256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:01,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:01,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:01,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366954850] [2022-11-20 10:57:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:01,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:01,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:01,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-20 10:57:01,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 786 transitions, 2336 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-20 10:57:01,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:01,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-20 10:57:01,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand