./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 6a1fdac91c77d25a0ff7a4081206e72776b2070a8df670f4d024b55d140add18 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:48,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:48,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:48,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:48,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:48,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:48,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:48,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:48,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:48,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:48,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:48,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:48,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:48,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:48,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:48,221 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:48,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:48,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:48,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:48,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:48,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:48,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:48,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:48,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:48,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:48,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:48,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:48,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:48,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:48,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:48,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:48,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:48,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:48,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:48,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:48,232 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:48,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:48,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:48,234 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:48,234 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a1fdac91c77d25a0ff7a4081206e72776b2070a8df670f4d024b55d140add18 [2023-11-19 07:35:48,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:48,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:48,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:48,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:48,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:48,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2023-11-19 07:35:51,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:51,739 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:51,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2023-11-19 07:35:51,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/data/10ed26b3c/f1200d3c6eed4e0e90ff5a6944eb4bef/FLAG9347a0884 [2023-11-19 07:35:51,801 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/data/10ed26b3c/f1200d3c6eed4e0e90ff5a6944eb4bef [2023-11-19 07:35:51,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:51,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:51,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:51,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:51,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:51,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:51" (1/1) ... [2023-11-19 07:35:51,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9365cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:51, skipping insertion in model container [2023-11-19 07:35:51,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:51" (1/1) ... [2023-11-19 07:35:51,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:52,104 WARN L240 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_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3128,3141] [2023-11-19 07:35:52,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:52,125 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:52,167 WARN L240 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_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3128,3141] [2023-11-19 07:35:52,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:52,180 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:52,181 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:52,188 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:52,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52 WrapperNode [2023-11-19 07:35:52,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:52,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:52,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:52,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:52,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,258 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 167 [2023-11-19 07:35:52,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:52,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:52,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:52,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:52,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:52,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:52,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:52,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:52,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:52,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:52,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:35:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:35:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:35:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:35:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:35:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:35:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:35:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:35:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:52,396 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:52,504 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:52,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:52,815 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:52,885 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:52,885 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:35:52,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:52 BoogieIcfgContainer [2023-11-19 07:35:52,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:52,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:52,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:52,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:52,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:51" (1/3) ... [2023-11-19 07:35:52,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee529ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:52, skipping insertion in model container [2023-11-19 07:35:52,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (2/3) ... [2023-11-19 07:35:52,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee529ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:52, skipping insertion in model container [2023-11-19 07:35:52,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:52" (3/3) ... [2023-11-19 07:35:52,899 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-11-19 07:35:52,907 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:52,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:52,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:52,917 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:52,986 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:35:53,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 125 transitions, 271 flow [2023-11-19 07:35:53,169 INFO L124 PetriNetUnfolderBase]: 2/122 cut-off events. [2023-11-19 07:35:53,170 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:53,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 2/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-11-19 07:35:53,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 125 transitions, 271 flow [2023-11-19 07:35:53,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 111 transitions, 240 flow [2023-11-19 07:35:53,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:53,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 111 transitions, 240 flow [2023-11-19 07:35:53,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 111 transitions, 240 flow [2023-11-19 07:35:53,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 111 transitions, 240 flow [2023-11-19 07:35:53,260 INFO L124 PetriNetUnfolderBase]: 2/111 cut-off events. [2023-11-19 07:35:53,260 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 111 events. 2/111 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-11-19 07:35:53,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 856 [2023-11-19 07:35:56,890 INFO L134 LiptonReduction]: Checked pairs total: 3507 [2023-11-19 07:35:56,890 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-11-19 07:35:56,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:56,912 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=LoopHeads, 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;@455c1c50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:56,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:35:56,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:56,920 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-11-19 07:35:56,921 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:56,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:56,922 INFO L208 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] [2023-11-19 07:35:56,922 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)] === [2023-11-19 07:35:56,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1786614180, now seen corresponding path program 1 times [2023-11-19 07:35:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:56,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856851613] [2023-11-19 07:35:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:57,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:57,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856851613] [2023-11-19 07:35:57,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856851613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:57,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:57,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989403237] [2023-11-19 07:35:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:57,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:57,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:58,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 216 [2023-11-19 07:35:58,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 103.33333333333333) internal successors, (620), 6 states have internal predecessors, (620), 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) [2023-11-19 07:35:58,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:58,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 216 [2023-11-19 07:35:58,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:58,512 INFO L124 PetriNetUnfolderBase]: 991/1577 cut-off events. [2023-11-19 07:35:58,513 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 07:35:58,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 1577 events. 991/1577 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6764 event pairs, 336 based on Foata normal form. 1/1578 useless extension candidates. Maximal degree in co-relation 2744. Up to 651 conditions per place. [2023-11-19 07:35:58,527 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 60 selfloop transitions, 9 changer transitions 13/82 dead transitions. [2023-11-19 07:35:58,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 82 transitions, 373 flow [2023-11-19 07:35:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-11-19 07:35:58,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223765432098766 [2023-11-19 07:35:58,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-11-19 07:35:58,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-11-19 07:35:58,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:58,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-11-19 07:35:58,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 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) [2023-11-19 07:35:58,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-11-19 07:35:58,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-11-19 07:35:58,568 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 70 flow. Second operand 6 states and 677 transitions. [2023-11-19 07:35:58,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 82 transitions, 373 flow [2023-11-19 07:35:58,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 82 transitions, 343 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:35:58,578 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 109 flow [2023-11-19 07:35:58,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-19 07:35:58,583 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-19 07:35:58,584 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 109 flow [2023-11-19 07:35:58,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.33333333333333) internal successors, (620), 6 states have internal predecessors, (620), 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) [2023-11-19 07:35:58,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:58,585 INFO L208 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] [2023-11-19 07:35:58,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:58,585 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)] === [2023-11-19 07:35:58,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2146813608, now seen corresponding path program 2 times [2023-11-19 07:35:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545991965] [2023-11-19 07:35:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545991965] [2023-11-19 07:35:58,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545991965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:58,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:58,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:35:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795192849] [2023-11-19 07:35:58,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:58,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 216 [2023-11-19 07:35:58,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 105.66666666666667) internal successors, (634), 6 states have internal predecessors, (634), 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) [2023-11-19 07:35:58,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:58,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 216 [2023-11-19 07:35:58,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:59,000 INFO L124 PetriNetUnfolderBase]: 320/611 cut-off events. [2023-11-19 07:35:59,000 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 07:35:59,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 611 events. 320/611 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2750 event pairs, 24 based on Foata normal form. 8/607 useless extension candidates. Maximal degree in co-relation 921. Up to 329 conditions per place. [2023-11-19 07:35:59,006 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 43 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2023-11-19 07:35:59,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 301 flow [2023-11-19 07:35:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 671 transitions. [2023-11-19 07:35:59,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177469135802469 [2023-11-19 07:35:59,028 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 671 transitions. [2023-11-19 07:35:59,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 671 transitions. [2023-11-19 07:35:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:59,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 671 transitions. [2023-11-19 07:35:59,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2023-11-19 07:35:59,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-11-19 07:35:59,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-11-19 07:35:59,038 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 109 flow. Second operand 6 states and 671 transitions. [2023-11-19 07:35:59,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 301 flow [2023-11-19 07:35:59,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 296 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:59,042 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 195 flow [2023-11-19 07:35:59,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-11-19 07:35:59,044 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-11-19 07:35:59,044 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 195 flow [2023-11-19 07:35:59,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.66666666666667) internal successors, (634), 6 states have internal predecessors, (634), 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) [2023-11-19 07:35:59,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,045 INFO L208 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] [2023-11-19 07:35:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:59,046 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)] === [2023-11-19 07:35:59,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1451738006, now seen corresponding path program 3 times [2023-11-19 07:35:59,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751949398] [2023-11-19 07:35:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751949398] [2023-11-19 07:35:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751949398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:59,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:59,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:59,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598921638] [2023-11-19 07:35:59,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:59,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:59,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:59,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 216 [2023-11-19 07:35:59,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-11-19 07:35:59,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:59,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 216 [2023-11-19 07:35:59,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:59,414 INFO L124 PetriNetUnfolderBase]: 349/678 cut-off events. [2023-11-19 07:35:59,414 INFO L125 PetriNetUnfolderBase]: For 388/426 co-relation queries the response was YES. [2023-11-19 07:35:59,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 678 events. 349/678 cut-off events. For 388/426 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3260 event pairs, 66 based on Foata normal form. 44/716 useless extension candidates. Maximal degree in co-relation 1279. Up to 338 conditions per place. [2023-11-19 07:35:59,421 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 40 selfloop transitions, 15 changer transitions 3/69 dead transitions. [2023-11-19 07:35:59,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 382 flow [2023-11-19 07:35:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-19 07:35:59,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203703703703704 [2023-11-19 07:35:59,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-19 07:35:59,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-19 07:35:59,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:59,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-19 07:35:59,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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) [2023-11-19 07:35:59,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-19 07:35:59,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-19 07:35:59,431 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 195 flow. Second operand 5 states and 562 transitions. [2023-11-19 07:35:59,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 382 flow [2023-11-19 07:35:59,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:59,435 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 259 flow [2023-11-19 07:35:59,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-19 07:35:59,436 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-11-19 07:35:59,436 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 259 flow [2023-11-19 07:35:59,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-11-19 07:35:59,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,437 INFO L208 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] [2023-11-19 07:35:59,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:35:59,438 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)] === [2023-11-19 07:35:59,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash -813046300, now seen corresponding path program 4 times [2023-11-19 07:35:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624643536] [2023-11-19 07:35:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:59,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624643536] [2023-11-19 07:35:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624643536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:59,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:59,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:59,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045716481] [2023-11-19 07:35:59,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:59,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 216 [2023-11-19 07:35:59,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-11-19 07:35:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 216 [2023-11-19 07:35:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:59,796 INFO L124 PetriNetUnfolderBase]: 295/608 cut-off events. [2023-11-19 07:35:59,797 INFO L125 PetriNetUnfolderBase]: For 702/722 co-relation queries the response was YES. [2023-11-19 07:35:59,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 608 events. 295/608 cut-off events. For 702/722 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2913 event pairs, 44 based on Foata normal form. 40/644 useless extension candidates. Maximal degree in co-relation 1328. Up to 304 conditions per place. [2023-11-19 07:35:59,803 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 38 selfloop transitions, 16 changer transitions 4/69 dead transitions. [2023-11-19 07:35:59,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 448 flow [2023-11-19 07:35:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-11-19 07:35:59,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-11-19 07:35:59,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-11-19 07:35:59,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-11-19 07:35:59,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:59,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-11-19 07:35:59,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-19 07:35:59,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-19 07:35:59,813 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 259 flow. Second operand 5 states and 560 transitions. [2023-11-19 07:35:59,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 448 flow [2023-11-19 07:35:59,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:59,818 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 289 flow [2023-11-19 07:35:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-19 07:35:59,819 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-11-19 07:35:59,820 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 289 flow [2023-11-19 07:35:59,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-11-19 07:35:59,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,820 INFO L208 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] [2023-11-19 07:35:59,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:59,821 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)] === [2023-11-19 07:35:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash -971199658, now seen corresponding path program 5 times [2023-11-19 07:35:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725772941] [2023-11-19 07:35:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725772941] [2023-11-19 07:35:59,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725772941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:59,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000598234] [2023-11-19 07:35:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:59,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 216 [2023-11-19 07:35:59,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-11-19 07:35:59,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:59,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 216 [2023-11-19 07:35:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:00,102 INFO L124 PetriNetUnfolderBase]: 118/253 cut-off events. [2023-11-19 07:36:00,102 INFO L125 PetriNetUnfolderBase]: For 397/431 co-relation queries the response was YES. [2023-11-19 07:36:00,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 253 events. 118/253 cut-off events. For 397/431 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 891 event pairs, 16 based on Foata normal form. 38/289 useless extension candidates. Maximal degree in co-relation 753. Up to 135 conditions per place. [2023-11-19 07:36:00,105 INFO L140 encePairwiseOnDemand]: 209/216 looper letters, 38 selfloop transitions, 14 changer transitions 0/58 dead transitions. [2023-11-19 07:36:00,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 399 flow [2023-11-19 07:36:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-11-19 07:36:00,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157407407407407 [2023-11-19 07:36:00,109 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-11-19 07:36:00,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-11-19 07:36:00,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-11-19 07:36:00,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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) [2023-11-19 07:36:00,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-19 07:36:00,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-11-19 07:36:00,114 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 289 flow. Second operand 5 states and 557 transitions. [2023-11-19 07:36:00,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 399 flow [2023-11-19 07:36:00,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 370 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-19 07:36:00,118 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 276 flow [2023-11-19 07:36:00,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-11-19 07:36:00,120 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-19 07:36:00,120 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 276 flow [2023-11-19 07:36:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-11-19 07:36:00,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:00,121 INFO L208 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] [2023-11-19 07:36:00,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:00,121 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)] === [2023-11-19 07:36:00,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1950312172, now seen corresponding path program 6 times [2023-11-19 07:36:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170796984] [2023-11-19 07:36:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170796984] [2023-11-19 07:36:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170796984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:00,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:00,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:00,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683772357] [2023-11-19 07:36:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:00,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:00,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:00,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:00,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:00,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:00,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:00,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:00,538 INFO L124 PetriNetUnfolderBase]: 152/343 cut-off events. [2023-11-19 07:36:00,538 INFO L125 PetriNetUnfolderBase]: For 636/682 co-relation queries the response was YES. [2023-11-19 07:36:00,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 343 events. 152/343 cut-off events. For 636/682 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1448 event pairs, 20 based on Foata normal form. 22/365 useless extension candidates. Maximal degree in co-relation 987. Up to 127 conditions per place. [2023-11-19 07:36:00,542 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 45 selfloop transitions, 18 changer transitions 6/75 dead transitions. [2023-11-19 07:36:00,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 524 flow [2023-11-19 07:36:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:36:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 874 transitions. [2023-11-19 07:36:00,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057870370370371 [2023-11-19 07:36:00,546 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 874 transitions. [2023-11-19 07:36:00,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 874 transitions. [2023-11-19 07:36:00,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 874 transitions. [2023-11-19 07:36:00,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 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) [2023-11-19 07:36:00,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:00,554 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:00,555 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 276 flow. Second operand 8 states and 874 transitions. [2023-11-19 07:36:00,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 524 flow [2023-11-19 07:36:00,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 507 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:00,560 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 319 flow [2023-11-19 07:36:00,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=319, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2023-11-19 07:36:00,561 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-11-19 07:36:00,561 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 319 flow [2023-11-19 07:36:00,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:00,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:00,562 INFO L208 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] [2023-11-19 07:36:00,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:00,562 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)] === [2023-11-19 07:36:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash 625542630, now seen corresponding path program 7 times [2023-11-19 07:36:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076871800] [2023-11-19 07:36:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076871800] [2023-11-19 07:36:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076871800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:00,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:00,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554936463] [2023-11-19 07:36:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:00,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:00,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:00,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:00,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:00,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:00,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:00,985 INFO L124 PetriNetUnfolderBase]: 142/323 cut-off events. [2023-11-19 07:36:00,985 INFO L125 PetriNetUnfolderBase]: For 832/876 co-relation queries the response was YES. [2023-11-19 07:36:00,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 323 events. 142/323 cut-off events. For 832/876 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1329 event pairs, 20 based on Foata normal form. 18/341 useless extension candidates. Maximal degree in co-relation 973. Up to 185 conditions per place. [2023-11-19 07:36:00,989 INFO L140 encePairwiseOnDemand]: 209/216 looper letters, 39 selfloop transitions, 13 changer transitions 9/67 dead transitions. [2023-11-19 07:36:00,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 508 flow [2023-11-19 07:36:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:36:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 864 transitions. [2023-11-19 07:36:00,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 07:36:00,998 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 864 transitions. [2023-11-19 07:36:00,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 864 transitions. [2023-11-19 07:36:00,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 864 transitions. [2023-11-19 07:36:01,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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) [2023-11-19 07:36:01,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:01,007 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:01,007 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 319 flow. Second operand 8 states and 864 transitions. [2023-11-19 07:36:01,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 508 flow [2023-11-19 07:36:01,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 462 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-19 07:36:01,019 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 286 flow [2023-11-19 07:36:01,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2023-11-19 07:36:01,021 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-11-19 07:36:01,021 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 286 flow [2023-11-19 07:36:01,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:01,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:01,022 INFO L208 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] [2023-11-19 07:36:01,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:01,022 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)] === [2023-11-19 07:36:01,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1103309390, now seen corresponding path program 8 times [2023-11-19 07:36:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:01,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702522482] [2023-11-19 07:36:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702522482] [2023-11-19 07:36:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702522482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:01,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813806712] [2023-11-19 07:36:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:01,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:01,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:01,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:01,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:01,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:01,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:01,445 INFO L124 PetriNetUnfolderBase]: 138/321 cut-off events. [2023-11-19 07:36:01,445 INFO L125 PetriNetUnfolderBase]: For 760/814 co-relation queries the response was YES. [2023-11-19 07:36:01,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 321 events. 138/321 cut-off events. For 760/814 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1346 event pairs, 22 based on Foata normal form. 30/351 useless extension candidates. Maximal degree in co-relation 977. Up to 183 conditions per place. [2023-11-19 07:36:01,449 INFO L140 encePairwiseOnDemand]: 209/216 looper letters, 38 selfloop transitions, 12 changer transitions 12/68 dead transitions. [2023-11-19 07:36:01,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 500 flow [2023-11-19 07:36:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:36:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 867 transitions. [2023-11-19 07:36:01,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017361111111112 [2023-11-19 07:36:01,453 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 867 transitions. [2023-11-19 07:36:01,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 867 transitions. [2023-11-19 07:36:01,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:01,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 867 transitions. [2023-11-19 07:36:01,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.375) internal successors, (867), 8 states have internal predecessors, (867), 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) [2023-11-19 07:36:01,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:01,462 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:01,462 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 286 flow. Second operand 8 states and 867 transitions. [2023-11-19 07:36:01,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 500 flow [2023-11-19 07:36:01,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 451 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-19 07:36:01,468 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 257 flow [2023-11-19 07:36:01,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-11-19 07:36:01,472 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-11-19 07:36:01,472 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 257 flow [2023-11-19 07:36:01,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:01,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:01,473 INFO L208 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] [2023-11-19 07:36:01,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:01,473 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)] === [2023-11-19 07:36:01,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1334705868, now seen corresponding path program 9 times [2023-11-19 07:36:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:01,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022634711] [2023-11-19 07:36:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:01,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022634711] [2023-11-19 07:36:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022634711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:01,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:01,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716394834] [2023-11-19 07:36:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:01,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:01,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:01,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:01,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:01,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:01,842 INFO L124 PetriNetUnfolderBase]: 118/279 cut-off events. [2023-11-19 07:36:01,842 INFO L125 PetriNetUnfolderBase]: For 599/629 co-relation queries the response was YES. [2023-11-19 07:36:01,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 279 events. 118/279 cut-off events. For 599/629 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1109 event pairs, 24 based on Foata normal form. 30/309 useless extension candidates. Maximal degree in co-relation 831. Up to 123 conditions per place. [2023-11-19 07:36:01,846 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 36 selfloop transitions, 10 changer transitions 15/67 dead transitions. [2023-11-19 07:36:01,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 464 flow [2023-11-19 07:36:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:36:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 869 transitions. [2023-11-19 07:36:01,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028935185185185 [2023-11-19 07:36:01,850 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 869 transitions. [2023-11-19 07:36:01,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 869 transitions. [2023-11-19 07:36:01,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:01,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 869 transitions. [2023-11-19 07:36:01,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.625) internal successors, (869), 8 states have internal predecessors, (869), 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) [2023-11-19 07:36:01,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:01,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:01,858 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 257 flow. Second operand 8 states and 869 transitions. [2023-11-19 07:36:01,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 464 flow [2023-11-19 07:36:01,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 428 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-19 07:36:01,863 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 211 flow [2023-11-19 07:36:01,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=211, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2023-11-19 07:36:01,864 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-11-19 07:36:01,864 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 211 flow [2023-11-19 07:36:01,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:01,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:01,865 INFO L208 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] [2023-11-19 07:36:01,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:01,866 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)] === [2023-11-19 07:36:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2122684666, now seen corresponding path program 10 times [2023-11-19 07:36:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384299312] [2023-11-19 07:36:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:02,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384299312] [2023-11-19 07:36:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384299312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:02,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:02,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496704631] [2023-11-19 07:36:02,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:02,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:02,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:02,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:02,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:02,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:02,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:02,194 INFO L124 PetriNetUnfolderBase]: 110/279 cut-off events. [2023-11-19 07:36:02,195 INFO L125 PetriNetUnfolderBase]: For 508/512 co-relation queries the response was YES. [2023-11-19 07:36:02,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 279 events. 110/279 cut-off events. For 508/512 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1116 event pairs, 20 based on Foata normal form. 4/283 useless extension candidates. Maximal degree in co-relation 703. Up to 84 conditions per place. [2023-11-19 07:36:02,197 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 37 selfloop transitions, 20 changer transitions 5/68 dead transitions. [2023-11-19 07:36:02,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 460 flow [2023-11-19 07:36:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 764 transitions. [2023-11-19 07:36:02,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052910052910053 [2023-11-19 07:36:02,201 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 764 transitions. [2023-11-19 07:36:02,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 764 transitions. [2023-11-19 07:36:02,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 764 transitions. [2023-11-19 07:36:02,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 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) [2023-11-19 07:36:02,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:02,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:02,209 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 211 flow. Second operand 7 states and 764 transitions. [2023-11-19 07:36:02,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 460 flow [2023-11-19 07:36:02,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 407 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-19 07:36:02,214 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 293 flow [2023-11-19 07:36:02,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-19 07:36:02,215 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-11-19 07:36:02,216 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 293 flow [2023-11-19 07:36:02,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:02,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,216 INFO L208 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] [2023-11-19 07:36:02,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:02,217 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)] === [2023-11-19 07:36:02,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2038188082, now seen corresponding path program 11 times [2023-11-19 07:36:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455630006] [2023-11-19 07:36:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455630006] [2023-11-19 07:36:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455630006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:02,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:02,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:02,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047271661] [2023-11-19 07:36:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:02,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:02,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:02,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:02,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:02,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:02,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:02,574 INFO L124 PetriNetUnfolderBase]: 93/240 cut-off events. [2023-11-19 07:36:02,574 INFO L125 PetriNetUnfolderBase]: For 420/428 co-relation queries the response was YES. [2023-11-19 07:36:02,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 240 events. 93/240 cut-off events. For 420/428 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 932 event pairs, 8 based on Foata normal form. 16/256 useless extension candidates. Maximal degree in co-relation 619. Up to 64 conditions per place. [2023-11-19 07:36:02,577 INFO L140 encePairwiseOnDemand]: 208/216 looper letters, 29 selfloop transitions, 16 changer transitions 19/68 dead transitions. [2023-11-19 07:36:02,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 466 flow [2023-11-19 07:36:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:36:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 867 transitions. [2023-11-19 07:36:02,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017361111111112 [2023-11-19 07:36:02,581 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 867 transitions. [2023-11-19 07:36:02,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 867 transitions. [2023-11-19 07:36:02,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 867 transitions. [2023-11-19 07:36:02,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.375) internal successors, (867), 8 states have internal predecessors, (867), 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) [2023-11-19 07:36:02,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:02,589 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 216.0) internal successors, (1944), 9 states have internal predecessors, (1944), 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) [2023-11-19 07:36:02,589 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 293 flow. Second operand 8 states and 867 transitions. [2023-11-19 07:36:02,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 466 flow [2023-11-19 07:36:02,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 412 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-19 07:36:02,595 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 225 flow [2023-11-19 07:36:02,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=225, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-11-19 07:36:02,596 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-11-19 07:36:02,596 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 225 flow [2023-11-19 07:36:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:02,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,597 INFO L208 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] [2023-11-19 07:36:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:02,598 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)] === [2023-11-19 07:36:02,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1641021900, now seen corresponding path program 12 times [2023-11-19 07:36:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113460810] [2023-11-19 07:36:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:02,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113460810] [2023-11-19 07:36:02,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113460810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:02,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:02,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096003438] [2023-11-19 07:36:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:02,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:02,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:02,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:02,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:02,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:02,900 INFO L124 PetriNetUnfolderBase]: 46/131 cut-off events. [2023-11-19 07:36:02,900 INFO L125 PetriNetUnfolderBase]: For 294/310 co-relation queries the response was YES. [2023-11-19 07:36:02,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 131 events. 46/131 cut-off events. For 294/310 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 396 event pairs, 8 based on Foata normal form. 12/143 useless extension candidates. Maximal degree in co-relation 316. Up to 79 conditions per place. [2023-11-19 07:36:02,901 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 28 selfloop transitions, 5 changer transitions 6/43 dead transitions. [2023-11-19 07:36:02,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 43 transitions, 297 flow [2023-11-19 07:36:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:02,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 742 transitions. [2023-11-19 07:36:02,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2023-11-19 07:36:02,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 742 transitions. [2023-11-19 07:36:02,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 742 transitions. [2023-11-19 07:36:02,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 742 transitions. [2023-11-19 07:36:02,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 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) [2023-11-19 07:36:02,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:02,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:02,912 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 225 flow. Second operand 7 states and 742 transitions. [2023-11-19 07:36:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 43 transitions, 297 flow [2023-11-19 07:36:02,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 256 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-19 07:36:02,915 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 155 flow [2023-11-19 07:36:02,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2023-11-19 07:36:02,916 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-11-19 07:36:02,916 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 155 flow [2023-11-19 07:36:02,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:02,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,917 INFO L208 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] [2023-11-19 07:36:02,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:02,917 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)] === [2023-11-19 07:36:02,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1946684192, now seen corresponding path program 13 times [2023-11-19 07:36:02,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316390708] [2023-11-19 07:36:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:03,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316390708] [2023-11-19 07:36:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316390708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:03,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354601905] [2023-11-19 07:36:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:03,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:03,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:03,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:03,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:03,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:03,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:03,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:03,179 INFO L124 PetriNetUnfolderBase]: 32/99 cut-off events. [2023-11-19 07:36:03,179 INFO L125 PetriNetUnfolderBase]: For 151/163 co-relation queries the response was YES. [2023-11-19 07:36:03,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 99 events. 32/99 cut-off events. For 151/163 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 235 event pairs, 4 based on Foata normal form. 8/107 useless extension candidates. Maximal degree in co-relation 222. Up to 53 conditions per place. [2023-11-19 07:36:03,180 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 23 selfloop transitions, 3 changer transitions 10/40 dead transitions. [2023-11-19 07:36:03,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 40 transitions, 238 flow [2023-11-19 07:36:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 741 transitions. [2023-11-19 07:36:03,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49007936507936506 [2023-11-19 07:36:03,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 741 transitions. [2023-11-19 07:36:03,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 741 transitions. [2023-11-19 07:36:03,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:03,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 741 transitions. [2023-11-19 07:36:03,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 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) [2023-11-19 07:36:03,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:03,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:03,191 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 155 flow. Second operand 7 states and 741 transitions. [2023-11-19 07:36:03,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 40 transitions, 238 flow [2023-11-19 07:36:03,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 218 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-19 07:36:03,193 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 111 flow [2023-11-19 07:36:03,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-11-19 07:36:03,194 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-11-19 07:36:03,194 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 111 flow [2023-11-19 07:36:03,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:03,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:03,195 INFO L208 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] [2023-11-19 07:36:03,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:36:03,195 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)] === [2023-11-19 07:36:03,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1611235208, now seen corresponding path program 14 times [2023-11-19 07:36:03,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:03,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047506965] [2023-11-19 07:36:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047506965] [2023-11-19 07:36:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047506965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:03,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838837529] [2023-11-19 07:36:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:03,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:03,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 216 [2023-11-19 07:36:03,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 111 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:03,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:03,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 216 [2023-11-19 07:36:03,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:03,414 INFO L124 PetriNetUnfolderBase]: 9/34 cut-off events. [2023-11-19 07:36:03,414 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 07:36:03,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 34 events. 9/34 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2023-11-19 07:36:03,414 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-11-19 07:36:03,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 20 transitions, 107 flow [2023-11-19 07:36:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2023-11-19 07:36:03,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2023-11-19 07:36:03,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2023-11-19 07:36:03,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2023-11-19 07:36:03,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:03,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2023-11-19 07:36:03,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.71428571428571) internal successors, (726), 7 states have internal predecessors, (726), 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) [2023-11-19 07:36:03,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:03,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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) [2023-11-19 07:36:03,434 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 111 flow. Second operand 7 states and 726 transitions. [2023-11-19 07:36:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 20 transitions, 107 flow [2023-11-19 07:36:03,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 92 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-19 07:36:03,435 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-11-19 07:36:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-11-19 07:36:03,436 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-19 07:36:03,436 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-11-19 07:36:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 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) [2023-11-19 07:36:03,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:36:03,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 07:36:03,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:36:03,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:36:03,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:36:03,441 INFO L445 BasicCegarLoop]: Path program histogram: [14] [2023-11-19 07:36:03,444 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:36:03,444 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:36:03,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:36:03 BasicIcfg [2023-11-19 07:36:03,448 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:36:03,449 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:36:03,449 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:36:03,449 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:36:03,449 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:52" (3/4) ... [2023-11-19 07:36:03,451 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:36:03,455 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:36:03,455 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:36:03,455 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 07:36:03,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 07:36:03,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:36:03,461 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:36:03,462 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:36:03,550 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:36:03,550 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:36:03,551 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:36:03,551 INFO L158 Benchmark]: Toolchain (without parser) took 11733.58ms. Allocated memory was 136.3MB in the beginning and 243.3MB in the end (delta: 107.0MB). Free memory was 109.2MB in the beginning and 203.3MB in the end (delta: -94.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,552 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 136.3MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:03,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.84ms. Allocated memory is still 136.3MB. Free memory was 108.6MB in the beginning and 97.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.87ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 95.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,553 INFO L158 Benchmark]: Boogie Preprocessor took 36.43ms. Allocated memory is still 136.3MB. Free memory was 95.1MB in the beginning and 94.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,553 INFO L158 Benchmark]: RCFGBuilder took 592.97ms. Allocated memory is still 136.3MB. Free memory was 94.0MB in the beginning and 72.5MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,554 INFO L158 Benchmark]: TraceAbstraction took 10555.89ms. Allocated memory was 136.3MB in the beginning and 243.3MB in the end (delta: 107.0MB). Free memory was 72.1MB in the beginning and 207.5MB in the end (delta: -135.4MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,554 INFO L158 Benchmark]: Witness Printer took 102.05ms. Allocated memory is still 243.3MB. Free memory was 207.5MB in the beginning and 203.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:36:03,556 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 136.3MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.84ms. Allocated memory is still 136.3MB. Free memory was 108.6MB in the beginning and 97.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.87ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 95.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.43ms. Allocated memory is still 136.3MB. Free memory was 95.1MB in the beginning and 94.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.97ms. Allocated memory is still 136.3MB. Free memory was 94.0MB in the beginning and 72.5MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10555.89ms. Allocated memory was 136.3MB in the beginning and 243.3MB in the end (delta: 107.0MB). Free memory was 72.1MB in the beginning and 207.5MB in the end (delta: -135.4MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. * Witness Printer took 102.05ms. Allocated memory is still 243.3MB. Free memory was 207.5MB in the beginning and 203.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 119 PlacesBefore, 36 PlacesAfterwards, 111 TransitionsBefore, 26 TransitionsAfterwards, 856 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 91 TotalNumberOfCompositions, 3507 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1787, independent: 1613, independent conditional: 0, independent unconditional: 1613, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 468, independent: 449, independent conditional: 0, independent unconditional: 449, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1787, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 468, unknown conditional: 0, unknown unconditional: 468] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 124]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.4s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 472 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2390 IncrementalHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 36 mSDtfsCounter, 2390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319occurred in iteration=6, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 364 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 1544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:36:03,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6657ad86-a319-4846-a88f-f4f3ff3a9d5a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE