./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC --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 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:50:26,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:50:26,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:50:26,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:50:26,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:50:26,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:50:26,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:50:26,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:50:26,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:50:26,194 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:50:26,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:50:26,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:50:26,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:50:26,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:50:26,196 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:50:26,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:50:26,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:50:26,198 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:50:26,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:50:26,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:50:26,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:50:26,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:50:26,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:50:26,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:50:26,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:50:26,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:50:26,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:50:26,200 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:50:26,201 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC 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 -> 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 [2024-11-23 22:50:26,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:50:26,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:50:26,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:50:26,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:50:26,520 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:50:26,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2024-11-23 22:50:29,561 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/data/14e88326c/7a6bb5505b5245a8bb581d0d97258550/FLAG6eabbaa0e [2024-11-23 22:50:29,864 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:50:29,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2024-11-23 22:50:29,878 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/data/14e88326c/7a6bb5505b5245a8bb581d0d97258550/FLAG6eabbaa0e [2024-11-23 22:50:29,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/data/14e88326c/7a6bb5505b5245a8bb581d0d97258550 [2024-11-23 22:50:29,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:50:29,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:50:29,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:50:29,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:50:29,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:50:29,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:50:29" (1/1) ... [2024-11-23 22:50:29,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c2607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:29, skipping insertion in model container [2024-11-23 22:50:29,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:50:29" (1/1) ... [2024-11-23 22:50:29,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:50:30,181 WARN L250 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_d6833334-1f7e-4a50-9fc8-372a1b172d05/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c[2996,3009] [2024-11-23 22:50:30,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:50:30,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:50:30,235 WARN L250 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_d6833334-1f7e-4a50-9fc8-372a1b172d05/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c[2996,3009] [2024-11-23 22:50:30,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:50:30,250 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:50:30,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30 WrapperNode [2024-11-23 22:50:30,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:50:30,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:50:30,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:50:30,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:50:30,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,289 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-23 22:50:30,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:50:30,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:50:30,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:50:30,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:50:30,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,329 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]. [2024-11-23 22:50:30,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:50:30,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:50:30,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:50:30,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:50:30,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (1/1) ... [2024-11-23 22:50:30,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:50:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:50:30,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:50:30,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:50:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:50:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 22:50:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 22:50:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 22:50:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 22:50:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 22:50:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 22:50:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:50:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 22:50:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 22:50:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:50:30,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:50:30,428 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 22:50:30,518 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:50:30,520 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:50:30,853 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 22:50:30,853 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:50:31,047 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:50:31,047 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 22:50:31,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:50:31 BoogieIcfgContainer [2024-11-23 22:50:31,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:50:31,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:50:31,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:50:31,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:50:31,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:50:29" (1/3) ... [2024-11-23 22:50:31,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f0c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:50:31, skipping insertion in model container [2024-11-23 22:50:31,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:30" (2/3) ... [2024-11-23 22:50:31,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f0c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:50:31, skipping insertion in model container [2024-11-23 22:50:31,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:50:31" (3/3) ... [2024-11-23 22:50:31,058 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2024-11-23 22:50:31,073 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:50:31,075 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-threaded-sum-3.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-23 22:50:31,075 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 22:50:31,158 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 22:50:31,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-11-23 22:50:31,242 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-11-23 22:50:31,245 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 22:50:31,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-23 22:50:31,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-11-23 22:50:31,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-11-23 22:50:31,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:50:31,294 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;@42219d3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:50:31,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-23 22:50:31,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:50:31,308 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-11-23 22:50:31,309 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 22:50:31,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:31,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:31,310 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)] === [2024-11-23 22:50:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1633512352, now seen corresponding path program 1 times [2024-11-23 22:50:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:31,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276341340] [2024-11-23 22:50:31,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276341340] [2024-11-23 22:50:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276341340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:32,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:32,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:32,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266083225] [2024-11-23 22:50:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:32,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:32,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:32,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:32,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-23 22:50:32,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-23 22:50:32,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:32,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-23 22:50:32,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:32,722 INFO L124 PetriNetUnfolderBase]: 367/655 cut-off events. [2024-11-23 22:50:32,722 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-23 22:50:32,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 655 events. 367/655 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3357 event pairs, 26 based on Foata normal form. 20/660 useless extension candidates. Maximal degree in co-relation 1074. Up to 445 conditions per place. [2024-11-23 22:50:32,737 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 33 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-23 22:50:32,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 204 flow [2024-11-23 22:50:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:50:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-23 22:50:32,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-23 22:50:32,759 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 4 states and 95 transitions. [2024-11-23 22:50:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 204 flow [2024-11-23 22:50:32,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 22:50:32,773 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 100 flow [2024-11-23 22:50:32,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-23 22:50:32,781 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2024-11-23 22:50:32,781 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 100 flow [2024-11-23 22:50:32,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-23 22:50:32,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:32,782 INFO L206 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] [2024-11-23 22:50:32,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:50:32,782 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)] === [2024-11-23 22:50:32,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2077144870, now seen corresponding path program 1 times [2024-11-23 22:50:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:32,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757855603] [2024-11-23 22:50:32,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:32,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:33,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:33,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757855603] [2024-11-23 22:50:33,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757855603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:33,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:33,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949550812] [2024-11-23 22:50:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:33,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:33,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:33,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:33,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-23 22:50:33,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-11-23 22:50:33,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:33,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-23 22:50:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:34,225 INFO L124 PetriNetUnfolderBase]: 1042/1669 cut-off events. [2024-11-23 22:50:34,225 INFO L125 PetriNetUnfolderBase]: For 412/448 co-relation queries the response was YES. [2024-11-23 22:50:34,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 1669 events. 1042/1669 cut-off events. For 412/448 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8699 event pairs, 288 based on Foata normal form. 24/1665 useless extension candidates. Maximal degree in co-relation 2474. Up to 925 conditions per place. [2024-11-23 22:50:34,244 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 59 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2024-11-23 22:50:34,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 87 transitions, 422 flow [2024-11-23 22:50:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:50:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-23 22:50:34,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6971428571428572 [2024-11-23 22:50:34,249 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 100 flow. Second operand 5 states and 122 transitions. [2024-11-23 22:50:34,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 87 transitions, 422 flow [2024-11-23 22:50:34,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 87 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:50:34,255 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 256 flow [2024-11-23 22:50:34,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2024-11-23 22:50:34,258 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2024-11-23 22:50:34,258 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 256 flow [2024-11-23 22:50:34,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-11-23 22:50:34,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:34,259 INFO L206 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] [2024-11-23 22:50:34,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:50:34,259 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)] === [2024-11-23 22:50:34,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1371597242, now seen corresponding path program 2 times [2024-11-23 22:50:34,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:34,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890370593] [2024-11-23 22:50:34,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:50:34,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:34,316 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 22:50:34,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890370593] [2024-11-23 22:50:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890370593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:34,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:34,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716603577] [2024-11-23 22:50:34,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:34,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:34,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:34,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:34,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-23 22:50:34,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-23 22:50:34,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:34,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-23 22:50:34,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:35,046 INFO L124 PetriNetUnfolderBase]: 746/1230 cut-off events. [2024-11-23 22:50:35,046 INFO L125 PetriNetUnfolderBase]: For 1395/1498 co-relation queries the response was YES. [2024-11-23 22:50:35,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 1230 events. 746/1230 cut-off events. For 1395/1498 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6410 event pairs, 129 based on Foata normal form. 108/1282 useless extension candidates. Maximal degree in co-relation 1594. Up to 599 conditions per place. [2024-11-23 22:50:35,056 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 63 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-11-23 22:50:35,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 86 transitions, 560 flow [2024-11-23 22:50:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:50:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-23 22:50:35,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-23 22:50:35,058 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 256 flow. Second operand 4 states and 96 transitions. [2024-11-23 22:50:35,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 86 transitions, 560 flow [2024-11-23 22:50:35,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 86 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:50:35,063 INFO L231 Difference]: Finished difference. Result has 49 places, 62 transitions, 357 flow [2024-11-23 22:50:35,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=49, PETRI_TRANSITIONS=62} [2024-11-23 22:50:35,066 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-11-23 22:50:35,066 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 62 transitions, 357 flow [2024-11-23 22:50:35,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-23 22:50:35,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:35,067 INFO L206 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] [2024-11-23 22:50:35,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:50:35,067 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)] === [2024-11-23 22:50:35,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash -842827941, now seen corresponding path program 1 times [2024-11-23 22:50:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503621577] [2024-11-23 22:50:35,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:50:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503621577] [2024-11-23 22:50:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503621577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:35,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583131360] [2024-11-23 22:50:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:35,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:35,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:35,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:35,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-23 22:50:35,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 62 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-23 22:50:35,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:35,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-23 22:50:35,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:35,817 INFO L124 PetriNetUnfolderBase]: 935/1550 cut-off events. [2024-11-23 22:50:35,817 INFO L125 PetriNetUnfolderBase]: For 1801/1919 co-relation queries the response was YES. [2024-11-23 22:50:35,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5029 conditions, 1550 events. 935/1550 cut-off events. For 1801/1919 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8431 event pairs, 113 based on Foata normal form. 104/1600 useless extension candidates. Maximal degree in co-relation 3846. Up to 1040 conditions per place. [2024-11-23 22:50:35,830 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 70 selfloop transitions, 10 changer transitions 2/99 dead transitions. [2024-11-23 22:50:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 99 transitions, 686 flow [2024-11-23 22:50:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:50:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-23 22:50:35,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6971428571428572 [2024-11-23 22:50:35,832 INFO L175 Difference]: Start difference. First operand has 49 places, 62 transitions, 357 flow. Second operand 5 states and 122 transitions. [2024-11-23 22:50:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 99 transitions, 686 flow [2024-11-23 22:50:35,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 682 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-23 22:50:35,838 INFO L231 Difference]: Finished difference. Result has 56 places, 71 transitions, 470 flow [2024-11-23 22:50:35,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=56, PETRI_TRANSITIONS=71} [2024-11-23 22:50:35,839 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-23 22:50:35,839 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 71 transitions, 470 flow [2024-11-23 22:50:35,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-23 22:50:35,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:35,839 INFO L206 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] [2024-11-23 22:50:35,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:50:35,840 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)] === [2024-11-23 22:50:35,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1800418527, now seen corresponding path program 2 times [2024-11-23 22:50:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911186174] [2024-11-23 22:50:35,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:50:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:35,858 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 22:50:35,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:36,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911186174] [2024-11-23 22:50:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911186174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:36,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:36,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:50:36,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233529050] [2024-11-23 22:50:36,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:36,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:36,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:36,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:36,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:36,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-23 22:50:36,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 71 transitions, 470 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-23 22:50:36,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:36,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-23 22:50:36,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:36,660 INFO L124 PetriNetUnfolderBase]: 1425/2331 cut-off events. [2024-11-23 22:50:36,660 INFO L125 PetriNetUnfolderBase]: For 4123/4330 co-relation queries the response was YES. [2024-11-23 22:50:36,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 2331 events. 1425/2331 cut-off events. For 4123/4330 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14076 event pairs, 201 based on Foata normal form. 169/2433 useless extension candidates. Maximal degree in co-relation 4535. Up to 1299 conditions per place. [2024-11-23 22:50:36,680 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 75 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-11-23 22:50:36,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 846 flow [2024-11-23 22:50:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:50:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-23 22:50:36,682 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-23 22:50:36,682 INFO L175 Difference]: Start difference. First operand has 56 places, 71 transitions, 470 flow. Second operand 5 states and 120 transitions. [2024-11-23 22:50:36,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 846 flow [2024-11-23 22:50:36,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 835 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-23 22:50:36,695 INFO L231 Difference]: Finished difference. Result has 60 places, 73 transitions, 527 flow [2024-11-23 22:50:36,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=60, PETRI_TRANSITIONS=73} [2024-11-23 22:50:36,696 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-11-23 22:50:36,696 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 73 transitions, 527 flow [2024-11-23 22:50:36,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-23 22:50:36,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:36,696 INFO L206 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] [2024-11-23 22:50:36,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:50:36,696 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)] === [2024-11-23 22:50:36,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:36,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1915896449, now seen corresponding path program 3 times [2024-11-23 22:50:36,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:36,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897950282] [2024-11-23 22:50:36,697 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:50:36,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:36,713 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 22:50:36,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897950282] [2024-11-23 22:50:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897950282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:36,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:36,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:50:36,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388803627] [2024-11-23 22:50:36,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:36,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:50:36,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:36,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:50:36,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:50:37,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-23 22:50:37,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 73 transitions, 527 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-23 22:50:37,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:37,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-23 22:50:37,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:37,853 INFO L124 PetriNetUnfolderBase]: 2544/3858 cut-off events. [2024-11-23 22:50:37,853 INFO L125 PetriNetUnfolderBase]: For 8655/8860 co-relation queries the response was YES. [2024-11-23 22:50:37,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13697 conditions, 3858 events. 2544/3858 cut-off events. For 8655/8860 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 22763 event pairs, 97 based on Foata normal form. 315/4005 useless extension candidates. Maximal degree in co-relation 8446. Up to 1184 conditions per place. [2024-11-23 22:50:37,885 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 137 selfloop transitions, 46 changer transitions 0/193 dead transitions. [2024-11-23 22:50:37,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 1637 flow [2024-11-23 22:50:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:50:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:50:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-11-23 22:50:37,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2024-11-23 22:50:37,888 INFO L175 Difference]: Start difference. First operand has 60 places, 73 transitions, 527 flow. Second operand 10 states and 204 transitions. [2024-11-23 22:50:37,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 1637 flow [2024-11-23 22:50:37,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 193 transitions, 1593 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 22:50:37,917 INFO L231 Difference]: Finished difference. Result has 72 places, 103 transitions, 908 flow [2024-11-23 22:50:37,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=908, PETRI_PLACES=72, PETRI_TRANSITIONS=103} [2024-11-23 22:50:37,918 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2024-11-23 22:50:37,918 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 103 transitions, 908 flow [2024-11-23 22:50:37,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-23 22:50:37,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:37,919 INFO L206 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] [2024-11-23 22:50:37,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:50:37,919 INFO L396 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)] === [2024-11-23 22:50:37,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:37,919 INFO L85 PathProgramCache]: Analyzing trace with hash 822525155, now seen corresponding path program 4 times [2024-11-23 22:50:37,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:37,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403535222] [2024-11-23 22:50:37,920 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:50:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:37,941 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:50:37,941 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403535222] [2024-11-23 22:50:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403535222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:38,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100516915] [2024-11-23 22:50:38,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:38,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:38,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:38,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:38,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-23 22:50:38,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 103 transitions, 908 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-23 22:50:38,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:38,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-23 22:50:38,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:38,802 INFO L124 PetriNetUnfolderBase]: 2273/3680 cut-off events. [2024-11-23 22:50:38,802 INFO L125 PetriNetUnfolderBase]: For 13999/14951 co-relation queries the response was YES. [2024-11-23 22:50:38,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15577 conditions, 3680 events. 2273/3680 cut-off events. For 13999/14951 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 22729 event pairs, 159 based on Foata normal form. 393/3931 useless extension candidates. Maximal degree in co-relation 10231. Up to 1852 conditions per place. [2024-11-23 22:50:38,850 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 104 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-11-23 22:50:38,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 160 transitions, 1559 flow [2024-11-23 22:50:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:50:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-23 22:50:38,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-11-23 22:50:38,852 INFO L175 Difference]: Start difference. First operand has 72 places, 103 transitions, 908 flow. Second operand 5 states and 126 transitions. [2024-11-23 22:50:38,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 160 transitions, 1559 flow [2024-11-23 22:50:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 160 transitions, 1545 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-23 22:50:38,896 INFO L231 Difference]: Finished difference. Result has 79 places, 110 transitions, 1013 flow [2024-11-23 22:50:38,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=79, PETRI_TRANSITIONS=110} [2024-11-23 22:50:38,897 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2024-11-23 22:50:38,899 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 110 transitions, 1013 flow [2024-11-23 22:50:38,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-23 22:50:38,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:38,899 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:38,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:50:38,900 INFO L396 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)] === [2024-11-23 22:50:38,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash 981779353, now seen corresponding path program 1 times [2024-11-23 22:50:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:38,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360764973] [2024-11-23 22:50:38,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:38,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:41,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360764973] [2024-11-23 22:50:41,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360764973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:41,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:41,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:50:41,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238069841] [2024-11-23 22:50:41,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:41,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:50:41,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:41,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:50:41,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:50:41,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-23 22:50:41,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 110 transitions, 1013 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 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) [2024-11-23 22:50:41,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:41,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-23 22:50:41,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:44,217 INFO L124 PetriNetUnfolderBase]: 3677/6134 cut-off events. [2024-11-23 22:50:44,217 INFO L125 PetriNetUnfolderBase]: For 30886/32206 co-relation queries the response was YES. [2024-11-23 22:50:44,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28541 conditions, 6134 events. 3677/6134 cut-off events. For 30886/32206 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 42968 event pairs, 257 based on Foata normal form. 476/6408 useless extension candidates. Maximal degree in co-relation 18254. Up to 3051 conditions per place. [2024-11-23 22:50:44,274 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 114 selfloop transitions, 62 changer transitions 39/258 dead transitions. [2024-11-23 22:50:44,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 258 transitions, 2499 flow [2024-11-23 22:50:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:50:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 22:50:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 374 transitions. [2024-11-23 22:50:44,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-23 22:50:44,280 INFO L175 Difference]: Start difference. First operand has 79 places, 110 transitions, 1013 flow. Second operand 17 states and 374 transitions. [2024-11-23 22:50:44,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 258 transitions, 2499 flow [2024-11-23 22:50:44,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 258 transitions, 2483 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-23 22:50:44,370 INFO L231 Difference]: Finished difference. Result has 105 places, 166 transitions, 1848 flow [2024-11-23 22:50:44,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1848, PETRI_PLACES=105, PETRI_TRANSITIONS=166} [2024-11-23 22:50:44,371 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2024-11-23 22:50:44,372 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 166 transitions, 1848 flow [2024-11-23 22:50:44,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 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) [2024-11-23 22:50:44,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:44,372 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:44,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:50:44,372 INFO L396 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)] === [2024-11-23 22:50:44,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1748052509, now seen corresponding path program 2 times [2024-11-23 22:50:44,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:44,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005672088] [2024-11-23 22:50:44,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:50:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:44,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 22:50:44,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:44,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005672088] [2024-11-23 22:50:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005672088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:44,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:44,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:50:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747991724] [2024-11-23 22:50:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:44,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:50:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:44,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:50:44,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:50:44,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-23 22:50:44,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 166 transitions, 1848 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2024-11-23 22:50:44,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:50:44,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-23 22:50:44,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:50:46,442 INFO L124 PetriNetUnfolderBase]: 6110/9242 cut-off events. [2024-11-23 22:50:46,442 INFO L125 PetriNetUnfolderBase]: For 76162/77517 co-relation queries the response was YES. [2024-11-23 22:50:46,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49208 conditions, 9242 events. 6110/9242 cut-off events. For 76162/77517 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 57971 event pairs, 226 based on Foata normal form. 722/9848 useless extension candidates. Maximal degree in co-relation 49098. Up to 3081 conditions per place. [2024-11-23 22:50:46,555 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 219 selfloop transitions, 57 changer transitions 0/307 dead transitions. [2024-11-23 22:50:46,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 307 transitions, 3852 flow [2024-11-23 22:50:46,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:50:46,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 22:50:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-11-23 22:50:46,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-23 22:50:46,558 INFO L175 Difference]: Start difference. First operand has 105 places, 166 transitions, 1848 flow. Second operand 9 states and 178 transitions. [2024-11-23 22:50:46,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 307 transitions, 3852 flow [2024-11-23 22:50:46,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 307 transitions, 3626 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-11-23 22:50:46,821 INFO L231 Difference]: Finished difference. Result has 111 places, 173 transitions, 1963 flow [2024-11-23 22:50:46,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1963, PETRI_PLACES=111, PETRI_TRANSITIONS=173} [2024-11-23 22:50:46,823 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2024-11-23 22:50:46,824 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 173 transitions, 1963 flow [2024-11-23 22:50:46,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2024-11-23 22:50:46,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:50:46,824 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:46,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:50:46,825 INFO L396 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)] === [2024-11-23 22:50:46,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash 902284051, now seen corresponding path program 3 times [2024-11-23 22:50:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:46,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706221083] [2024-11-23 22:50:46,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:50:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:46,884 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:50:46,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:49,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:49,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706221083] [2024-11-23 22:50:49,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706221083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:50:49,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432197882] [2024-11-23 22:50:49,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:50:49,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:50:49,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:50:49,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:50:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:50:49,435 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:50:49,436 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:50:49,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:50:49,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:51:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:03,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:51:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:09,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432197882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:51:09,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:51:09,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-23 22:51:09,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472123420] [2024-11-23 22:51:09,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:51:09,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 22:51:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:09,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 22:51:09,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=738, Unknown=4, NotChecked=0, Total=930 [2024-11-23 22:51:12,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:51:16,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:51:16,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-23 22:51:16,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 173 transitions, 1963 flow. Second operand has 31 states, 31 states have (on average 9.0) internal successors, (279), 31 states have internal predecessors, (279), 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) [2024-11-23 22:51:16,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:51:16,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-23 22:51:16,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:51:35,377 WARN L286 SmtUtils]: Spent 15.22s on a formula simplification. DAG size of input: 62 DAG size of output: 37 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:52:05,908 WARN L286 SmtUtils]: Spent 28.09s on a formula simplification. DAG size of input: 68 DAG size of output: 60 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:52:23,763 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 98 DAG size of output: 58 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:52:28,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:52:50,114 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 81 DAG size of output: 57 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:53:03,133 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 63 DAG size of output: 44 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:53:33,215 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 83 DAG size of output: 60 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:53:38,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:53:42,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:53:46,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:53:59,115 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 61 DAG size of output: 44 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:54:08,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:54:30,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:54:58,078 WARN L286 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 79 DAG size of output: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:55:06,743 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 86 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 22:55:38,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:55:50,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-23 22:56:29,345 INFO L124 PetriNetUnfolderBase]: 85249/121142 cut-off events. [2024-11-23 22:56:29,345 INFO L125 PetriNetUnfolderBase]: For 864944/864944 co-relation queries the response was YES. [2024-11-23 22:56:29,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627571 conditions, 121142 events. 85249/121142 cut-off events. For 864944/864944 co-relation queries the response was YES. Maximal size of possible extension queue 4638. Compared 877150 event pairs, 982 based on Foata normal form. 73/121214 useless extension candidates. Maximal degree in co-relation 611521. Up to 28153 conditions per place. [2024-11-23 22:56:30,562 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 1705 selfloop transitions, 2379 changer transitions 406/4494 dead transitions. [2024-11-23 22:56:30,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 4494 transitions, 52654 flow [2024-11-23 22:56:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-11-23 22:56:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2024-11-23 22:56:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 4149 transitions. [2024-11-23 22:56:30,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4648739495798319 [2024-11-23 22:56:30,577 INFO L175 Difference]: Start difference. First operand has 111 places, 173 transitions, 1963 flow. Second operand 255 states and 4149 transitions. [2024-11-23 22:56:30,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 4494 transitions, 52654 flow [2024-11-23 22:56:39,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 4494 transitions, 52341 flow, removed 140 selfloop flow, removed 1 redundant places. [2024-11-23 22:56:39,934 INFO L231 Difference]: Finished difference. Result has 465 places, 2874 transitions, 40937 flow [2024-11-23 22:56:39,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=255, PETRI_FLOW=40937, PETRI_PLACES=465, PETRI_TRANSITIONS=2874} [2024-11-23 22:56:39,935 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 427 predicate places. [2024-11-23 22:56:39,935 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 2874 transitions, 40937 flow [2024-11-23 22:56:39,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.0) internal successors, (279), 31 states have internal predecessors, (279), 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) [2024-11-23 22:56:39,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:56:39,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:39,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:56:40,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6833334-1f7e-4a50-9fc8-372a1b172d05/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:56:40,136 INFO L396 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)] === [2024-11-23 22:56:40,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1646242119, now seen corresponding path program 4 times [2024-11-23 22:56:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712592674] [2024-11-23 22:56:40,137 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:56:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:40,171 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:56:40,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:56:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:56:42,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:42,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712592674] [2024-11-23 22:56:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712592674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:42,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:56:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243716910] [2024-11-23 22:56:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:42,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:56:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:42,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:56:42,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:56:43,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-23 22:56:43,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 2874 transitions, 40937 flow. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 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) [2024-11-23 22:56:43,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:56:43,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-23 22:56:43,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand