./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU --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 d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:08,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:09,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:13:09,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:09,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:09,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:09,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:09,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:09,116 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:09,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:09,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:09,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:09,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:09,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:09,122 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:09,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:09,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:09,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:13:09,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:09,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:13:09,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:09,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:09,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:09,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:09,130 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:09,131 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:13:09,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:09,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:09,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:09,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:09,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:09,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:09,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:09,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:09,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:09,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:09,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:09,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:09,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:09,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:09,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:09,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:09,142 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_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 [2024-10-31 22:13:09,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:09,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:09,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:09,469 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:09,470 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:09,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c Unable to find full path for "g++" [2024-10-31 22:13:11,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:11,799 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:11,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2024-10-31 22:13:11,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/data/cb4c7003a/15da1853d7ea403f888c5662b8822b6c/FLAGb7c208675 [2024-10-31 22:13:11,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/data/cb4c7003a/15da1853d7ea403f888c5662b8822b6c [2024-10-31 22:13:11,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:11,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:11,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:11,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:11,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:11,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:11" (1/1) ... [2024-10-31 22:13:11,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654e548c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:11, skipping insertion in model container [2024-10-31 22:13:11,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:11" (1/1) ... [2024-10-31 22:13:11,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:12,108 WARN L251 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_43b0ece5-1af0-408c-be54-472d4289f2ea/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3054,3067] [2024-10-31 22:13:12,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:12,129 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:12,159 WARN L251 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_43b0ece5-1af0-408c-be54-472d4289f2ea/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3054,3067] [2024-10-31 22:13:12,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:12,186 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:12,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12 WrapperNode [2024-10-31 22:13:12,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:12,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:12,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:12,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:12,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,237 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 196 [2024-10-31 22:13:12,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:12,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:12,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:12,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:12,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,272 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:13:12,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:12,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:12,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:12,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:12,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (1/1) ... [2024-10-31 22:13:12,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:12,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:12,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b0ece5-1af0-408c-be54-472d4289f2ea/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:13:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:13:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:13:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:13:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:13:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:13:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:12,372 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:13:12,474 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:12,476 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:12,972 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:13:12,973 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:13,540 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:13,540 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:13:13,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:13 BoogieIcfgContainer [2024-10-31 22:13:13,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:13,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:13,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:13,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:13,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:11" (1/3) ... [2024-10-31 22:13:13,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:13, skipping insertion in model container [2024-10-31 22:13:13,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:12" (2/3) ... [2024-10-31 22:13:13,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:13, skipping insertion in model container [2024-10-31 22:13:13,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:13" (3/3) ... [2024-10-31 22:13:13,554 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2024-10-31 22:13:13,576 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:13,577 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:13:13,578 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:13:13,655 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:13:13,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 59 flow [2024-10-31 22:13:13,747 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-10-31 22:13:13,748 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:13:13,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-31 22:13:13,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 59 flow [2024-10-31 22:13:13,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 15 transitions, 48 flow [2024-10-31 22:13:13,771 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:13,779 INFO L333 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, 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;@6f5b12f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:13,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:13:13,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:13:13,804 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-10-31 22:13:13,804 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:13:13,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:13,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:13,806 INFO L396 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)] === [2024-10-31 22:13:13,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 141043559, now seen corresponding path program 1 times [2024-10-31 22:13:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962716411] [2024-10-31 22:13:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:18,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962716411] [2024-10-31 22:13:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962716411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:18,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:18,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:18,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474563822] [2024-10-31 22:13:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:18,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:18,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-10-31 22:13:18,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:18,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:18,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-10-31 22:13:18,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:19,599 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2024-10-31 22:13:19,599 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-31 22:13:19,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 85 events. 32/85 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 221 event pairs, 1 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 145. Up to 34 conditions per place. [2024-10-31 22:13:19,602 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2024-10-31 22:13:19,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2024-10-31 22:13:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-10-31 22:13:19,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-10-31 22:13:19,619 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 48 flow. Second operand 6 states and 62 transitions. [2024-10-31 22:13:19,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2024-10-31 22:13:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:13:19,628 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2024-10-31 22:13:19,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2024-10-31 22:13:19,634 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-10-31 22:13:19,637 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2024-10-31 22:13:19,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:19,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:19,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:19,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:19,639 INFO L396 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)] === [2024-10-31 22:13:19,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash -561387959, now seen corresponding path program 2 times [2024-10-31 22:13:19,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:19,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907120691] [2024-10-31 22:13:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:23,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907120691] [2024-10-31 22:13:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907120691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801564245] [2024-10-31 22:13:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:23,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:23,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-10-31 22:13:23,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 69 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:23,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:23,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-10-31 22:13:23,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:23,832 INFO L124 PetriNetUnfolderBase]: 31/97 cut-off events. [2024-10-31 22:13:23,832 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-31 22:13:23,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 97 events. 31/97 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 333 event pairs, 3 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2024-10-31 22:13:23,834 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 7 changer transitions 7/41 dead transitions. [2024-10-31 22:13:23,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 213 flow [2024-10-31 22:13:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:13:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 68 transitions. [2024-10-31 22:13:23,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2024-10-31 22:13:23,839 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 7 states and 68 transitions. [2024-10-31 22:13:23,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 213 flow [2024-10-31 22:13:23,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 209 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:23,844 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 98 flow [2024-10-31 22:13:23,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2024-10-31 22:13:23,845 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2024-10-31 22:13:23,845 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 98 flow [2024-10-31 22:13:23,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:23,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:23,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:23,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:23,846 INFO L396 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)] === [2024-10-31 22:13:23,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash 318042361, now seen corresponding path program 3 times [2024-10-31 22:13:23,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:23,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431604598] [2024-10-31 22:13:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431604598] [2024-10-31 22:13:26,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431604598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:26,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:26,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:26,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309239959] [2024-10-31 22:13:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:26,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:26,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-10-31 22:13:26,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:26,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:26,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-10-31 22:13:26,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:26,612 INFO L124 PetriNetUnfolderBase]: 28/87 cut-off events. [2024-10-31 22:13:26,612 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-31 22:13:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 87 events. 28/87 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 268 event pairs, 1 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 284. Up to 42 conditions per place. [2024-10-31 22:13:26,619 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 23 selfloop transitions, 6 changer transitions 9/39 dead transitions. [2024-10-31 22:13:26,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 235 flow [2024-10-31 22:13:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-10-31 22:13:26,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-10-31 22:13:26,621 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 98 flow. Second operand 6 states and 62 transitions. [2024-10-31 22:13:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 235 flow [2024-10-31 22:13:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 220 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-31 22:13:26,627 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 97 flow [2024-10-31 22:13:26,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2024-10-31 22:13:26,628 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-10-31 22:13:26,629 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 97 flow [2024-10-31 22:13:26,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:26,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:26,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:26,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:13:26,631 INFO L396 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)] === [2024-10-31 22:13:26,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash 293918695, now seen corresponding path program 4 times [2024-10-31 22:13:26,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108838884] [2024-10-31 22:13:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:29,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108838884] [2024-10-31 22:13:29,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108838884] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:29,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:29,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065470378] [2024-10-31 22:13:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:29,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:29,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-10-31 22:13:29,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:29,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:29,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-10-31 22:13:29,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:31,274 INFO L124 PetriNetUnfolderBase]: 15/51 cut-off events. [2024-10-31 22:13:31,275 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-31 22:13:31,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 51 events. 15/51 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 179. Up to 16 conditions per place. [2024-10-31 22:13:31,276 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 16 selfloop transitions, 5 changer transitions 10/32 dead transitions. [2024-10-31 22:13:31,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 200 flow [2024-10-31 22:13:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:13:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2024-10-31 22:13:31,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-10-31 22:13:31,278 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 97 flow. Second operand 7 states and 59 transitions. [2024-10-31 22:13:31,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 200 flow [2024-10-31 22:13:31,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 179 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:13:31,284 INFO L231 Difference]: Finished difference. Result has 36 places, 17 transitions, 76 flow [2024-10-31 22:13:31,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=17} [2024-10-31 22:13:31,285 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2024-10-31 22:13:31,286 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 76 flow [2024-10-31 22:13:31,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:31,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:31,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:31,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:13:31,287 INFO L396 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)] === [2024-10-31 22:13:31,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1810578505, now seen corresponding path program 5 times [2024-10-31 22:13:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:31,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294256652] [2024-10-31 22:13:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:34,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294256652] [2024-10-31 22:13:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294256652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:34,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:34,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944808742] [2024-10-31 22:13:34,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:34,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:34,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:34,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-10-31 22:13:34,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:34,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:34,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-10-31 22:13:34,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:35,036 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2024-10-31 22:13:35,036 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-31 22:13:35,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 37 events. 8/37 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 125. Up to 17 conditions per place. [2024-10-31 22:13:35,037 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2024-10-31 22:13:35,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 160 flow [2024-10-31 22:13:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:13:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 55 transitions. [2024-10-31 22:13:35,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41353383458646614 [2024-10-31 22:13:35,042 INFO L175 Difference]: Start difference. First operand has 36 places, 17 transitions, 76 flow. Second operand 7 states and 55 transitions. [2024-10-31 22:13:35,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 160 flow [2024-10-31 22:13:35,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 129 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-10-31 22:13:35,045 INFO L231 Difference]: Finished difference. Result has 33 places, 15 transitions, 53 flow [2024-10-31 22:13:35,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=53, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2024-10-31 22:13:35,047 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2024-10-31 22:13:35,048 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 53 flow [2024-10-31 22:13:35,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:35,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:35,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:35,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:13:35,049 INFO L396 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)] === [2024-10-31 22:13:35,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1629082137, now seen corresponding path program 6 times [2024-10-31 22:13:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099610110] [2024-10-31 22:13:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat