./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd --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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:48:39,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:48:39,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:48:39,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:48:39,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:48:39,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:48:39,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:48:39,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:48:39,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:48:39,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:48:39,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:48:39,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:48:39,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:48:39,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:48:39,758 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:48:39,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:48:39,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:48:39,759 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:48:39,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:48:39,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:48:39,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:48:39,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:48:39,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:48:39,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:48:39,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:48:39,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:39,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:48:39,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:48:39,763 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_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd 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 -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-11-13 12:48:40,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:48:40,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:48:40,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:48:40,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:48:40,143 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:48:40,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c Unable to find full path for "g++" [2024-11-13 12:48:42,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:48:42,496 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:48:42,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-11-13 12:48:42,519 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/data/836696dd1/57cdd98d7c454ee2bb2e955cdd1e62b4/FLAGe4c02cd1f [2024-11-13 12:48:42,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/data/836696dd1/57cdd98d7c454ee2bb2e955cdd1e62b4 [2024-11-13 12:48:42,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:48:42,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:48:42,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:42,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:48:42,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:48:42,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:42,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a695d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42, skipping insertion in model container [2024-11-13 12:48:42,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:42,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:48:42,864 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_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4059,4072] [2024-11-13 12:48:42,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:42,891 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:48:42,936 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_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4059,4072] [2024-11-13 12:48:42,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:42,966 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:48:42,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42 WrapperNode [2024-11-13 12:48:42,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:42,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:42,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:48:42,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:48:42,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:42,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,028 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 251 [2024-11-13 12:48:43,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:43,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:48:43,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:48:43,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:48:43,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,072 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-13 12:48:43,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:48:43,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:48:43,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:48:43,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:48:43,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (1/1) ... [2024-11-13 12:48:43,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:43,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:43,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:48:43,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:48:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:48:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 12:48:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 12:48:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 12:48:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 12:48:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 12:48:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 12:48:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 12:48:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 12:48:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:48:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:48:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 12:48:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 12:48:43,178 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 12:48:43,323 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:48:43,325 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:48:43,843 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 12:48:43,843 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:48:44,283 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:48:44,284 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 12:48:44,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:44 BoogieIcfgContainer [2024-11-13 12:48:44,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:48:44,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:48:44,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:48:44,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:48:44,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:48:42" (1/3) ... [2024-11-13 12:48:44,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10098f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:44, skipping insertion in model container [2024-11-13 12:48:44,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:42" (2/3) ... [2024-11-13 12:48:44,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10098f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:44, skipping insertion in model container [2024-11-13 12:48:44,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:44" (3/3) ... [2024-11-13 12:48:44,301 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-11-13 12:48:44,321 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:48:44,322 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons3.wvr.c that has 5 procedures, 46 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 12:48:44,323 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 12:48:44,411 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 12:48:44,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 130 flow [2024-11-13 12:48:44,518 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-11-13 12:48:44,522 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 12:48:44,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 47 events. 6/47 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-13 12:48:44,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 51 transitions, 130 flow [2024-11-13 12:48:44,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 116 flow [2024-11-13 12:48:44,547 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:48:44,568 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;@21aac58b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:48:44,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-13 12:48:44,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 12:48:44,597 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-11-13 12:48:44,597 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 12:48:44,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:44,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:44,599 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 2 more)] === [2024-11-13 12:48:44,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash -495313961, now seen corresponding path program 1 times [2024-11-13 12:48:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289688302] [2024-11-13 12:48:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:45,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:45,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289688302] [2024-11-13 12:48:45,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289688302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:45,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:45,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:48:45,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599250268] [2024-11-13 12:48:45,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:45,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:45,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:45,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:45,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-11-13 12:48:45,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-11-13 12:48:45,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:45,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-11-13 12:48:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:48:47,585 INFO L124 PetriNetUnfolderBase]: 6165/8972 cut-off events. [2024-11-13 12:48:47,586 INFO L125 PetriNetUnfolderBase]: For 559/559 co-relation queries the response was YES. [2024-11-13 12:48:47,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17659 conditions, 8972 events. 6165/8972 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 53584 event pairs, 2221 based on Foata normal form. 2/8576 useless extension candidates. Maximal degree in co-relation 16219. Up to 3684 conditions per place. [2024-11-13 12:48:47,751 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 65 selfloop transitions, 4 changer transitions 3/85 dead transitions. [2024-11-13 12:48:47,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 365 flow [2024-11-13 12:48:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 12:48:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-13 12:48:47,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2024-11-13 12:48:47,777 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 116 flow. Second operand 5 states and 159 transitions. [2024-11-13 12:48:47,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 365 flow [2024-11-13 12:48:47,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 331 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 12:48:47,801 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 124 flow [2024-11-13 12:48:47,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-13 12:48:47,813 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-11-13 12:48:47,813 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 124 flow [2024-11-13 12:48:47,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-11-13 12:48:47,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:47,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:47,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:48:47,815 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 2 more)] === [2024-11-13 12:48:47,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash -986347130, now seen corresponding path program 1 times [2024-11-13 12:48:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:47,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017829096] [2024-11-13 12:48:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:48,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:48,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017829096] [2024-11-13 12:48:48,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017829096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:48,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:48,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:48:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273241391] [2024-11-13 12:48:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:48,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:48,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:48,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:48,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-13 12:48:48,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-11-13 12:48:48,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:48,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-13 12:48:48,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:48:48,948 INFO L124 PetriNetUnfolderBase]: 3414/5610 cut-off events. [2024-11-13 12:48:48,948 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-13 12:48:48,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10851 conditions, 5610 events. 3414/5610 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 36660 event pairs, 1305 based on Foata normal form. 90/5527 useless extension candidates. Maximal degree in co-relation 6941. Up to 3076 conditions per place. [2024-11-13 12:48:48,990 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 46 selfloop transitions, 2 changer transitions 3/68 dead transitions. [2024-11-13 12:48:48,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 272 flow [2024-11-13 12:48:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 12:48:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-13 12:48:48,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-11-13 12:48:48,995 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 124 flow. Second operand 3 states and 109 transitions. [2024-11-13 12:48:48,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 272 flow [2024-11-13 12:48:48,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 12:48:49,001 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 132 flow [2024-11-13 12:48:49,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-11-13 12:48:49,003 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2024-11-13 12:48:49,003 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 132 flow [2024-11-13 12:48:49,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-11-13 12:48:49,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:49,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:49,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:48:49,004 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 2 more)] === [2024-11-13 12:48:49,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash 890083588, now seen corresponding path program 1 times [2024-11-13 12:48:49,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:49,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666673031] [2024-11-13 12:48:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:49,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:48:49,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:49,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666673031] [2024-11-13 12:48:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666673031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:49,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:48:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320928861] [2024-11-13 12:48:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:49,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:49,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-13 12:48:49,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-13 12:48:49,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:49,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-13 12:48:49,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:48:50,249 INFO L124 PetriNetUnfolderBase]: 3422/5588 cut-off events. [2024-11-13 12:48:50,249 INFO L125 PetriNetUnfolderBase]: For 428/428 co-relation queries the response was YES. [2024-11-13 12:48:50,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11303 conditions, 5588 events. 3422/5588 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 34272 event pairs, 1395 based on Foata normal form. 78/5471 useless extension candidates. Maximal degree in co-relation 7969. Up to 3744 conditions per place. [2024-11-13 12:48:50,296 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 42 selfloop transitions, 2 changer transitions 7/68 dead transitions. [2024-11-13 12:48:50,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 279 flow [2024-11-13 12:48:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 12:48:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-13 12:48:50,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-11-13 12:48:50,299 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 132 flow. Second operand 3 states and 108 transitions. [2024-11-13 12:48:50,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 279 flow [2024-11-13 12:48:50,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 12:48:50,304 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 142 flow [2024-11-13 12:48:50,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-11-13 12:48:50,308 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-11-13 12:48:50,308 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 142 flow [2024-11-13 12:48:50,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-13 12:48:50,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:50,309 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:50,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:48:50,310 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 2 more)] === [2024-11-13 12:48:50,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1745902930, now seen corresponding path program 1 times [2024-11-13 12:48:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380966322] [2024-11-13 12:48:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:48:50,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380966322] [2024-11-13 12:48:50,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380966322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:50,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:50,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737120271] [2024-11-13 12:48:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:50,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:48:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:48:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:48:50,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-13 12:48:50,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-13 12:48:50,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:50,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-13 12:48:50,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:48:51,683 INFO L124 PetriNetUnfolderBase]: 3940/6601 cut-off events. [2024-11-13 12:48:51,683 INFO L125 PetriNetUnfolderBase]: For 1136/1143 co-relation queries the response was YES. [2024-11-13 12:48:51,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 6601 events. 3940/6601 cut-off events. For 1136/1143 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 42769 event pairs, 3357 based on Foata normal form. 58/6387 useless extension candidates. Maximal degree in co-relation 9917. Up to 4556 conditions per place. [2024-11-13 12:48:51,739 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 32 selfloop transitions, 2 changer transitions 25/76 dead transitions. [2024-11-13 12:48:51,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 324 flow [2024-11-13 12:48:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 12:48:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-13 12:48:51,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-13 12:48:51,742 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 142 flow. Second operand 5 states and 153 transitions. [2024-11-13 12:48:51,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 324 flow [2024-11-13 12:48:51,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 12:48:51,753 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 158 flow [2024-11-13 12:48:51,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-13 12:48:51,754 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-11-13 12:48:51,755 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 158 flow [2024-11-13 12:48:51,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-13 12:48:51,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:51,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:51,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:48:51,756 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 2 more)] === [2024-11-13 12:48:51,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1105040087, now seen corresponding path program 1 times [2024-11-13 12:48:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603192236] [2024-11-13 12:48:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:51,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:48:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603192236] [2024-11-13 12:48:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603192236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:52,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:52,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:48:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217744399] [2024-11-13 12:48:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:52,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:48:52,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:48:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:48:52,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-11-13 12:48:52,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-11-13 12:48:52,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:52,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-11-13 12:48:52,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:48:53,187 INFO L124 PetriNetUnfolderBase]: 4848/8085 cut-off events. [2024-11-13 12:48:53,189 INFO L125 PetriNetUnfolderBase]: For 1638/1645 co-relation queries the response was YES. [2024-11-13 12:48:53,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 8085 events. 4848/8085 cut-off events. For 1638/1645 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 54585 event pairs, 4151 based on Foata normal form. 86/7769 useless extension candidates. Maximal degree in co-relation 16987. Up to 4557 conditions per place. [2024-11-13 12:48:53,239 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 33 selfloop transitions, 2 changer transitions 25/77 dead transitions. [2024-11-13 12:48:53,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 352 flow [2024-11-13 12:48:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:48:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:48:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-13 12:48:53,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2024-11-13 12:48:53,242 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 158 flow. Second operand 4 states and 133 transitions. [2024-11-13 12:48:53,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 352 flow [2024-11-13 12:48:53,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 336 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-13 12:48:53,250 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 162 flow [2024-11-13 12:48:53,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-11-13 12:48:53,251 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-11-13 12:48:53,254 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 162 flow [2024-11-13 12:48:53,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-11-13 12:48:53,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:53,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:53,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:48:53,255 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 2 more)] === [2024-11-13 12:48:53,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash 561415281, now seen corresponding path program 1 times [2024-11-13 12:48:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63394000] [2024-11-13 12:48:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:48:53,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63394000] [2024-11-13 12:48:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63394000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:53,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235394641] [2024-11-13 12:48:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:53,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:53,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-11-13 12:48:53,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-13 12:48:53,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:53,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-11-13 12:48:53,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:48:57,194 INFO L124 PetriNetUnfolderBase]: 17735/26611 cut-off events. [2024-11-13 12:48:57,194 INFO L125 PetriNetUnfolderBase]: For 5731/5731 co-relation queries the response was YES. [2024-11-13 12:48:57,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57938 conditions, 26611 events. 17735/26611 cut-off events. For 5731/5731 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 177429 event pairs, 1924 based on Foata normal form. 800/27201 useless extension candidates. Maximal degree in co-relation 57914. Up to 6730 conditions per place. [2024-11-13 12:48:57,337 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 113 selfloop transitions, 13 changer transitions 22/159 dead transitions. [2024-11-13 12:48:57,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 159 transitions, 763 flow [2024-11-13 12:48:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:48:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 12:48:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-11-13 12:48:57,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6638655462184874 [2024-11-13 12:48:57,340 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 162 flow. Second operand 7 states and 237 transitions. [2024-11-13 12:48:57,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 159 transitions, 763 flow [2024-11-13 12:48:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 159 transitions, 747 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-13 12:48:57,380 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 236 flow [2024-11-13 12:48:57,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-11-13 12:48:57,382 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-11-13 12:48:57,382 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 236 flow [2024-11-13 12:48:57,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-13 12:48:57,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:48:57,383 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:57,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:48:57,383 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 2 more)] === [2024-11-13 12:48:57,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1994171279, now seen corresponding path program 2 times [2024-11-13 12:48:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:57,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371832738] [2024-11-13 12:48:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:48:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:57,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371832738] [2024-11-13 12:48:57,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371832738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:48:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266397089] [2024-11-13 12:48:57,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:48:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:48:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:57,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:48:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:48:58,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:48:58,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:48:58,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 12:48:58,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:48:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:48:58,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:48:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:48:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266397089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:48:58,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:48:58,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 12:48:58,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195410349] [2024-11-13 12:48:58,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:48:58,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 12:48:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 12:48:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:48:58,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-11-13 12:48:58,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 236 flow. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 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) [2024-11-13 12:48:58,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:48:58,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-11-13 12:48:58,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:00,894 INFO L124 PetriNetUnfolderBase]: 9024/13495 cut-off events. [2024-11-13 12:49:00,895 INFO L125 PetriNetUnfolderBase]: For 7808/8196 co-relation queries the response was YES. [2024-11-13 12:49:00,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33845 conditions, 13495 events. 9024/13495 cut-off events. For 7808/8196 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 80446 event pairs, 1068 based on Foata normal form. 258/13433 useless extension candidates. Maximal degree in co-relation 33816. Up to 4080 conditions per place. [2024-11-13 12:49:01,020 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 130 selfloop transitions, 22 changer transitions 7/170 dead transitions. [2024-11-13 12:49:01,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 170 transitions, 913 flow [2024-11-13 12:49:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:49:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 12:49:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-11-13 12:49:01,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5431372549019607 [2024-11-13 12:49:01,023 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 236 flow. Second operand 10 states and 277 transitions. [2024-11-13 12:49:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 170 transitions, 913 flow [2024-11-13 12:49:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 170 transitions, 902 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-13 12:49:01,051 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 367 flow [2024-11-13 12:49:01,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=367, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-11-13 12:49:01,052 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-11-13 12:49:01,054 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 367 flow [2024-11-13 12:49:01,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 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) [2024-11-13 12:49:01,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:01,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:01,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:01,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 12:49:01,256 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 2 more)] === [2024-11-13 12:49:01,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -814881309, now seen corresponding path program 3 times [2024-11-13 12:49:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88862271] [2024-11-13 12:49:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:01,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:04,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:04,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88862271] [2024-11-13 12:49:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88862271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432341320] [2024-11-13 12:49:04,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:04,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:04,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:04,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:04,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:49:05,134 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 12:49:05,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:05,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 12:49:05,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:05,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 12:49:05,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 12:49:05,405 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 12:49:05,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 12:49:05,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 12:49:07,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 12:49:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:07,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:15,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:49:15,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 156 [2024-11-13 12:49:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:16,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432341320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:16,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:16,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 45 [2024-11-13 12:49:16,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024772322] [2024-11-13 12:49:16,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:16,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 12:49:16,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:16,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 12:49:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1782, Unknown=1, NotChecked=0, Total=2070 [2024-11-13 12:49:21,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:49:26,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:49:30,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:49:35,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:49:40,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:49:40,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2024-11-13 12:49:40,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 367 flow. Second operand has 46 states, 46 states have (on average 10.673913043478262) internal successors, (491), 46 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:40,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:40,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2024-11-13 12:49:40,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:50:21,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:50:27,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:50:49,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:51:05,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:51:13,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:51:28,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:51:37,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:51:52,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:52:44,764 INFO L124 PetriNetUnfolderBase]: 204083/286327 cut-off events. [2024-11-13 12:52:44,764 INFO L125 PetriNetUnfolderBase]: For 356278/356324 co-relation queries the response was YES. [2024-11-13 12:52:46,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831897 conditions, 286327 events. 204083/286327 cut-off events. For 356278/356324 co-relation queries the response was YES. Maximal size of possible extension queue 6569. Compared 2093128 event pairs, 11828 based on Foata normal form. 834/281433 useless extension candidates. Maximal degree in co-relation 664792. Up to 34709 conditions per place. [2024-11-13 12:52:46,525 INFO L140 encePairwiseOnDemand]: 32/51 looper letters, 1943 selfloop transitions, 861 changer transitions 637/3447 dead transitions. [2024-11-13 12:52:46,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 3447 transitions, 21853 flow [2024-11-13 12:52:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2024-11-13 12:52:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2024-11-13 12:52:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 4956 transitions. [2024-11-13 12:52:46,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4225063938618926 [2024-11-13 12:52:46,547 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 367 flow. Second operand 230 states and 4956 transitions. [2024-11-13 12:52:46,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 3447 transitions, 21853 flow [2024-11-13 12:52:59,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 3447 transitions, 21852 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 12:52:59,053 INFO L231 Difference]: Finished difference. Result has 367 places, 1113 transitions, 8489 flow [2024-11-13 12:52:59,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=230, PETRI_FLOW=8489, PETRI_PLACES=367, PETRI_TRANSITIONS=1113} [2024-11-13 12:52:59,054 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 314 predicate places. [2024-11-13 12:52:59,054 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 1113 transitions, 8489 flow [2024-11-13 12:52:59,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.673913043478262) internal successors, (491), 46 states have internal predecessors, (491), 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) [2024-11-13 12:52:59,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:52:59,055 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:52:59,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 12:52:59,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 12:52:59,259 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 2 more)] === [2024-11-13 12:52:59,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2039047180, now seen corresponding path program 4 times [2024-11-13 12:52:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:59,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329509944] [2024-11-13 12:52:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:52:59,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:59,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329509944] [2024-11-13 12:52:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329509944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:52:59,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915253028] [2024-11-13 12:52:59,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:52:59,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:52:59,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:52:59,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:52:59,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b2a9cf-4cfa-4f57-9295-4aaf1e74765f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:52:59,901 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:52:59,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:52:59,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 12:52:59,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:53:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:53:00,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:53:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:53:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915253028] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 12:53:00,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:53:00,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-13 12:53:00,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348754157] [2024-11-13 12:53:00,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:53:00,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:53:00,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:53:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:53:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-13 12:53:00,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-11-13 12:53:00,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 1113 transitions, 8489 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-11-13 12:53:00,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:53:00,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-11-13 12:53:00,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand