./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:48:16,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:48:16,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:48:16,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:48:16,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:48:16,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:48:16,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:48:16,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:48:16,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:48:16,370 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:48:16,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:48:16,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:48:16,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:48:16,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:48:16,373 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:48:16,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:48:16,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:48:16,375 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:48:16,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:48:16,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:48:16,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:48:16,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:48:16,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:48:16,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:48:16,378 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:48:16,378 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:48:16,379 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:48:16,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:48:16,379 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:48:16,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:48:16,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:48:16,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:48:16,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:48:16,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:48:16,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:48:16,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:48:16,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:48:16,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:48:16,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:48:16,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:48:16,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:48:16,383 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:48:16,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:48:16,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:48:16,384 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2023-11-29 04:48:16,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:48:16,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:48:16,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:48:16,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:48:16,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:48:16,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2023-11-29 04:48:19,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:48:19,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:48:19,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2023-11-29 04:48:19,531 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/data/0afa8e46f/26217e5d1fb44c6a9e1ed92388222b58/FLAG787a81a13 [2023-11-29 04:48:19,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/data/0afa8e46f/26217e5d1fb44c6a9e1ed92388222b58 [2023-11-29 04:48:19,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:48:19,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:48:19,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:19,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:48:19,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:48:19,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:19" (1/1) ... [2023-11-29 04:48:19,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bb1422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:19, skipping insertion in model container [2023-11-29 04:48:19,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:19" (1/1) ... [2023-11-29 04:48:19,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:48:20,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:20,114 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:48:20,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:20,152 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:48:20,152 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:48:20,158 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:48:20,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20 WrapperNode [2023-11-29 04:48:20,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:20,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:20,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:48:20,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:48:20,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,200 INFO L138 Inliner]: procedures = 27, calls = 74, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 314 [2023-11-29 04:48:20,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:20,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:48:20,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:48:20,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:48:20,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,229 INFO L175 MemorySlicer]: Split 14 memory accesses to 6 slices as follows [2, 2, 2, 4, 2, 2]. 29 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0, 0, 0]. The 5 writes are split as follows [1, 0, 1, 1, 1, 1]. [2023-11-29 04:48:20,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:48:20,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:48:20,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:48:20,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:48:20,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (1/1) ... [2023-11-29 04:48:20,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:48:20,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:20,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:48:20,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:48:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 04:48:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:48:20,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:48:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:48:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:48:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 04:48:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 04:48:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 04:48:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 04:48:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:48:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:48:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:48:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:48:20,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:48:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:48:20,344 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:48:20,475 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:48:20,476 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:48:20,914 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:48:21,426 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:48:21,426 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:48:21,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:21 BoogieIcfgContainer [2023-11-29 04:48:21,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:48:21,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:48:21,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:48:21,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:48:21,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:48:19" (1/3) ... [2023-11-29 04:48:21,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b2f88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:21, skipping insertion in model container [2023-11-29 04:48:21,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:20" (2/3) ... [2023-11-29 04:48:21,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b2f88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:21, skipping insertion in model container [2023-11-29 04:48:21,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:21" (3/3) ... [2023-11-29 04:48:21,436 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-11-29 04:48:21,446 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:48:21,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:48:21,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-29 04:48:21,458 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:48:21,608 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-11-29 04:48:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 92 transitions, 224 flow [2023-11-29 04:48:21,688 INFO L124 PetriNetUnfolderBase]: 9/84 cut-off events. [2023-11-29 04:48:21,688 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 04:48:21,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 84 events. 9/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 250 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2023-11-29 04:48:21,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 92 transitions, 224 flow [2023-11-29 04:48:21,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 82 transitions, 191 flow [2023-11-29 04:48:21,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:48:21,716 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e78eaba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:48:21,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-29 04:48:21,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:48:21,719 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-29 04:48:21,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:48:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:21,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:48:21,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:21,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 34064, now seen corresponding path program 1 times [2023-11-29 04:48:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:21,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411853304] [2023-11-29 04:48:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:21,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:21,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411853304] [2023-11-29 04:48:21,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411853304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:21,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:21,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:48:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506502154] [2023-11-29 04:48:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:21,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:48:21,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:21,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:21,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:48:21,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:27,367 INFO L124 PetriNetUnfolderBase]: 33656/45735 cut-off events. [2023-11-29 04:48:27,367 INFO L125 PetriNetUnfolderBase]: For 1708/1708 co-relation queries the response was YES. [2023-11-29 04:48:27,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92843 conditions, 45735 events. 33656/45735 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 2397. Compared 284316 event pairs, 29373 based on Foata normal form. 3849/30977 useless extension candidates. Maximal degree in co-relation 92700. Up to 44735 conditions per place. [2023-11-29 04:48:27,773 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 61 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-29 04:48:27,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 295 flow [2023-11-29 04:48:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:48:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 04:48:27,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40425531914893614 [2023-11-29 04:48:27,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 04:48:27,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 04:48:27,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:27,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 04:48:27,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:27,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:27,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:27,801 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 191 flow. Second operand 3 states and 114 transitions. [2023-11-29 04:48:27,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 295 flow [2023-11-29 04:48:27,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 278 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 04:48:27,838 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 156 flow [2023-11-29 04:48:27,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2023-11-29 04:48:27,844 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2023-11-29 04:48:27,844 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 156 flow [2023-11-29 04:48:27,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:27,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:27,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:48:27,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:48:27,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:27,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1057029, now seen corresponding path program 1 times [2023-11-29 04:48:27,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258005608] [2023-11-29 04:48:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:27,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:27,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258005608] [2023-11-29 04:48:27,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258005608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:27,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:27,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:48:27,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652024577] [2023-11-29 04:48:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:27,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:48:27,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:27,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:27,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:48:27,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:31,181 INFO L124 PetriNetUnfolderBase]: 26990/36750 cut-off events. [2023-11-29 04:48:31,181 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2023-11-29 04:48:31,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73639 conditions, 36750 events. 26990/36750 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 223732 event pairs, 23301 based on Foata normal form. 0/22740 useless extension candidates. Maximal degree in co-relation 73633. Up to 35870 conditions per place. [2023-11-29 04:48:31,374 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 57 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-29 04:48:31,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 264 flow [2023-11-29 04:48:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:48:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2023-11-29 04:48:31,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36879432624113473 [2023-11-29 04:48:31,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2023-11-29 04:48:31,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2023-11-29 04:48:31,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:31,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2023-11-29 04:48:31,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,381 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 156 flow. Second operand 3 states and 104 transitions. [2023-11-29 04:48:31,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 264 flow [2023-11-29 04:48:31,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:31,384 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 149 flow [2023-11-29 04:48:31,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-11-29 04:48:31,386 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-11-29 04:48:31,386 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 149 flow [2023-11-29 04:48:31,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:31,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:48:31,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:48:31,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:31,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:31,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1015838821, now seen corresponding path program 1 times [2023-11-29 04:48:31,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:31,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731724503] [2023-11-29 04:48:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:31,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731724503] [2023-11-29 04:48:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731724503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:31,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:31,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806206908] [2023-11-29 04:48:31,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:31,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:31,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:31,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:31,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:48:31,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:48:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:34,673 INFO L124 PetriNetUnfolderBase]: 26991/36754 cut-off events. [2023-11-29 04:48:34,673 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2023-11-29 04:48:34,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73649 conditions, 36754 events. 26991/36754 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 223828 event pairs, 23301 based on Foata normal form. 1/22744 useless extension candidates. Maximal degree in co-relation 73642. Up to 35874 conditions per place. [2023-11-29 04:48:34,867 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 59 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-29 04:48:34,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 281 flow [2023-11-29 04:48:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 04:48:34,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32180851063829785 [2023-11-29 04:48:34,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 04:48:34,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 04:48:34,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:34,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 04:48:34,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:34,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:34,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:34,875 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 149 flow. Second operand 4 states and 121 transitions. [2023-11-29 04:48:34,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 281 flow [2023-11-29 04:48:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:34,877 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 177 flow [2023-11-29 04:48:34,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-11-29 04:48:34,879 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2023-11-29 04:48:34,879 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 177 flow [2023-11-29 04:48:34,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:34,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:34,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:48:34,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:34,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 515832159, now seen corresponding path program 1 times [2023-11-29 04:48:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849335408] [2023-11-29 04:48:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849335408] [2023-11-29 04:48:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849335408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:34,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583181349] [2023-11-29 04:48:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:34,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:34,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:34,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:34,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:48:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:35,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:35,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:35,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:35,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583181349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:35,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:48:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:48:35,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317102041] [2023-11-29 04:48:35,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:35,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:48:35,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:48:35,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:35,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:35,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:48:35,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:38,768 INFO L124 PetriNetUnfolderBase]: 26991/36753 cut-off events. [2023-11-29 04:48:38,768 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-29 04:48:38,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73660 conditions, 36753 events. 26991/36753 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 223815 event pairs, 23301 based on Foata normal form. 1/22744 useless extension candidates. Maximal degree in co-relation 73651. Up to 35869 conditions per place. [2023-11-29 04:48:38,979 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 55 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-29 04:48:38,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 297 flow [2023-11-29 04:48:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:48:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-29 04:48:38,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26063829787234044 [2023-11-29 04:48:38,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-29 04:48:38,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-29 04:48:38,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:38,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-29 04:48:38,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:38,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:38,986 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:38,986 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 177 flow. Second operand 6 states and 147 transitions. [2023-11-29 04:48:38,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 297 flow [2023-11-29 04:48:38,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:38,990 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 184 flow [2023-11-29 04:48:38,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-11-29 04:48:38,991 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2023-11-29 04:48:38,991 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 184 flow [2023-11-29 04:48:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:38,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:38,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-29 04:48:38,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:39,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:39,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:39,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1189071163, now seen corresponding path program 1 times [2023-11-29 04:48:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:39,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833982513] [2023-11-29 04:48:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:39,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:39,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833982513] [2023-11-29 04:48:39,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833982513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:39,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32647985] [2023-11-29 04:48:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:39,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:39,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:39,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:48:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:39,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:39,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:39,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32647985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:39,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 04:48:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414216824] [2023-11-29 04:48:39,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:39,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:48:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:48:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:48:39,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:48:39,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 184 flow. Second operand has 12 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:39,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:39,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:48:39,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:42,584 INFO L124 PetriNetUnfolderBase]: 26994/36765 cut-off events. [2023-11-29 04:48:42,585 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-11-29 04:48:42,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73704 conditions, 36765 events. 26994/36765 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 1947. Compared 223963 event pairs, 23301 based on Foata normal form. 3/22756 useless extension candidates. Maximal degree in co-relation 73695. Up to 35876 conditions per place. [2023-11-29 04:48:42,768 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 58 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2023-11-29 04:48:42,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 380 flow [2023-11-29 04:48:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:48:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:48:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2023-11-29 04:48:42,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2276595744680851 [2023-11-29 04:48:42,770 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 214 transitions. [2023-11-29 04:48:42,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 214 transitions. [2023-11-29 04:48:42,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:42,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 214 transitions. [2023-11-29 04:48:42,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:42,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:42,774 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:42,774 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 184 flow. Second operand 10 states and 214 transitions. [2023-11-29 04:48:42,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 380 flow [2023-11-29 04:48:42,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 334 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 04:48:42,777 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 236 flow [2023-11-29 04:48:42,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-29 04:48:42,778 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-11-29 04:48:42,778 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 236 flow [2023-11-29 04:48:42,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:42,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:42,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:42,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:42,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:42,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:42,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -378211551, now seen corresponding path program 1 times [2023-11-29 04:48:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:42,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007787306] [2023-11-29 04:48:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:43,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007787306] [2023-11-29 04:48:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007787306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:43,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380450871] [2023-11-29 04:48:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:43,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:43,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 94 [2023-11-29 04:48:43,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:43,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:43,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 94 [2023-11-29 04:48:43,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:47,549 INFO L124 PetriNetUnfolderBase]: 37644/51521 cut-off events. [2023-11-29 04:48:47,549 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2023-11-29 04:48:47,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102686 conditions, 51521 events. 37644/51521 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 2224. Compared 328768 event pairs, 23377 based on Foata normal form. 0/33129 useless extension candidates. Maximal degree in co-relation 102675. Up to 35967 conditions per place. [2023-11-29 04:48:47,839 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 111 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-11-29 04:48:47,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 555 flow [2023-11-29 04:48:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:48:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-29 04:48:47,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2023-11-29 04:48:47,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-29 04:48:47,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-29 04:48:47,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:47,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-29 04:48:47,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:47,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:47,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:47,843 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 236 flow. Second operand 3 states and 150 transitions. [2023-11-29 04:48:47,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 555 flow [2023-11-29 04:48:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 544 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 04:48:47,847 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 237 flow [2023-11-29 04:48:47,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2023-11-29 04:48:47,848 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-11-29 04:48:47,848 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 237 flow [2023-11-29 04:48:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:47,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:48:47,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:47,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1160345005, now seen corresponding path program 1 times [2023-11-29 04:48:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135757652] [2023-11-29 04:48:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:47,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:47,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135757652] [2023-11-29 04:48:47,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135757652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:47,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:47,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:48:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047344735] [2023-11-29 04:48:47,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:47,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:48:47,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:48:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:47,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:48:47,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:47,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:47,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:48:47,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:54,054 INFO L124 PetriNetUnfolderBase]: 51316/70526 cut-off events. [2023-11-29 04:48:54,054 INFO L125 PetriNetUnfolderBase]: For 5906/5906 co-relation queries the response was YES. [2023-11-29 04:48:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145072 conditions, 70526 events. 51316/70526 cut-off events. For 5906/5906 co-relation queries the response was YES. Maximal size of possible extension queue 2611. Compared 463904 event pairs, 35452 based on Foata normal form. 686/46848 useless extension candidates. Maximal degree in co-relation 145059. Up to 49908 conditions per place. [2023-11-29 04:48:54,443 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 141 selfloop transitions, 4 changer transitions 10/164 dead transitions. [2023-11-29 04:48:54,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 735 flow [2023-11-29 04:48:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:48:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2023-11-29 04:48:54,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595744680851064 [2023-11-29 04:48:54,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 216 transitions. [2023-11-29 04:48:54,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 216 transitions. [2023-11-29 04:48:54,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:54,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 216 transitions. [2023-11-29 04:48:54,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:54,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:54,448 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:54,448 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 237 flow. Second operand 5 states and 216 transitions. [2023-11-29 04:48:54,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 735 flow [2023-11-29 04:48:54,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 164 transitions, 732 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:54,455 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 254 flow [2023-11-29 04:48:54,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2023-11-29 04:48:54,456 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2023-11-29 04:48:54,456 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 254 flow [2023-11-29 04:48:54,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:54,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:54,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:54,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:48:54,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:48:54,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1496423326, now seen corresponding path program 1 times [2023-11-29 04:48:54,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295519745] [2023-11-29 04:48:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:54,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:54,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:54,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295519745] [2023-11-29 04:48:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295519745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:54,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:54,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718159768] [2023-11-29 04:48:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:54,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:54,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 94 [2023-11-29 04:48:54,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:54,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:54,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 94 [2023-11-29 04:48:54,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:01,764 INFO L124 PetriNetUnfolderBase]: 60954/83594 cut-off events. [2023-11-29 04:49:01,764 INFO L125 PetriNetUnfolderBase]: For 10847/10847 co-relation queries the response was YES. [2023-11-29 04:49:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175105 conditions, 83594 events. 60954/83594 cut-off events. For 10847/10847 co-relation queries the response was YES. Maximal size of possible extension queue 3113. Compared 572619 event pairs, 31378 based on Foata normal form. 0/56683 useless extension candidates. Maximal degree in co-relation 175090. Up to 68616 conditions per place. [2023-11-29 04:49:02,302 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 107 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2023-11-29 04:49:02,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 576 flow [2023-11-29 04:49:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:49:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-29 04:49:02,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-11-29 04:49:02,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-29 04:49:02,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-29 04:49:02,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:02,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-29 04:49:02,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:02,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:02,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:02,307 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 254 flow. Second operand 3 states and 144 transitions. [2023-11-29 04:49:02,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 576 flow [2023-11-29 04:49:02,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 119 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:49:02,321 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 270 flow [2023-11-29 04:49:02,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2023-11-29 04:49:02,322 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2023-11-29 04:49:02,322 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 270 flow [2023-11-29 04:49:02,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:02,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:02,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:49:02,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:02,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash 855518313, now seen corresponding path program 1 times [2023-11-29 04:49:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:02,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770856903] [2023-11-29 04:49:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:02,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770856903] [2023-11-29 04:49:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770856903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:49:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16240002] [2023-11-29 04:49:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:02,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:49:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:49:02,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:49:02,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:49:02,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:02,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:02,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:49:02,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:07,933 INFO L124 PetriNetUnfolderBase]: 47120/64364 cut-off events. [2023-11-29 04:49:07,933 INFO L125 PetriNetUnfolderBase]: For 9585/9585 co-relation queries the response was YES. [2023-11-29 04:49:08,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140042 conditions, 64364 events. 47120/64364 cut-off events. For 9585/9585 co-relation queries the response was YES. Maximal size of possible extension queue 2783. Compared 418111 event pairs, 39430 based on Foata normal form. 336/43771 useless extension candidates. Maximal degree in co-relation 140026. Up to 59502 conditions per place. [2023-11-29 04:49:08,507 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 70 selfloop transitions, 2 changer transitions 41/122 dead transitions. [2023-11-29 04:49:08,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 595 flow [2023-11-29 04:49:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:49:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:49:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2023-11-29 04:49:08,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680851063829787 [2023-11-29 04:49:08,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 173 transitions. [2023-11-29 04:49:08,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 173 transitions. [2023-11-29 04:49:08,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:08,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 173 transitions. [2023-11-29 04:49:08,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:08,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:08,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:08,512 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 270 flow. Second operand 5 states and 173 transitions. [2023-11-29 04:49:08,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 595 flow [2023-11-29 04:49:08,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:49:08,518 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 264 flow [2023-11-29 04:49:08,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2023-11-29 04:49:08,519 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2023-11-29 04:49:08,519 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 264 flow [2023-11-29 04:49:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:08,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:08,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:49:08,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:08,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash -676307800, now seen corresponding path program 1 times [2023-11-29 04:49:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321713576] [2023-11-29 04:49:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:08,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:08,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321713576] [2023-11-29 04:49:08,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321713576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168589810] [2023-11-29 04:49:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:08,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:08,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:08,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:08,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:49:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:08,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:49:08,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:08,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168589810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:09,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:09,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 04:49:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299847933] [2023-11-29 04:49:09,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:49:09,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:49:09,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:49:09,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 94 [2023-11-29 04:49:09,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 264 flow. Second operand has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 15 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:09,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:09,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 94 [2023-11-29 04:49:09,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:16,675 INFO L124 PetriNetUnfolderBase]: 60953/83507 cut-off events. [2023-11-29 04:49:16,675 INFO L125 PetriNetUnfolderBase]: For 15437/15437 co-relation queries the response was YES. [2023-11-29 04:49:16,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181895 conditions, 83507 events. 60953/83507 cut-off events. For 15437/15437 co-relation queries the response was YES. Maximal size of possible extension queue 3271. Compared 570409 event pairs, 32758 based on Foata normal form. 824/57592 useless extension candidates. Maximal degree in co-relation 181877. Up to 46184 conditions per place. [2023-11-29 04:49:17,223 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 173 selfloop transitions, 13 changer transitions 15/209 dead transitions. [2023-11-29 04:49:17,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 209 transitions, 1010 flow [2023-11-29 04:49:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:49:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:49:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2023-11-29 04:49:17,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486997635933806 [2023-11-29 04:49:17,226 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 295 transitions. [2023-11-29 04:49:17,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 295 transitions. [2023-11-29 04:49:17,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:17,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 295 transitions. [2023-11-29 04:49:17,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.77777777777778) internal successors, (295), 9 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:17,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:17,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:17,229 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 264 flow. Second operand 9 states and 295 transitions. [2023-11-29 04:49:17,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 209 transitions, 1010 flow [2023-11-29 04:49:17,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 209 transitions, 976 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-29 04:49:17,357 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 300 flow [2023-11-29 04:49:17,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2023-11-29 04:49:17,358 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2023-11-29 04:49:17,358 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 300 flow [2023-11-29 04:49:17,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 15 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:17,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:17,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:17,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:49:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:49:17,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:17,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -246143825, now seen corresponding path program 1 times [2023-11-29 04:49:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825999281] [2023-11-29 04:49:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825999281] [2023-11-29 04:49:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825999281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196543400] [2023-11-29 04:49:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:17,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:17,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:17,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:17,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:49:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:17,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:49:17,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:18,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196543400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:18,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 04:49:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157296693] [2023-11-29 04:49:18,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:18,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:49:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:18,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:49:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:49:18,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 94 [2023-11-29 04:49:18,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 300 flow. Second operand has 15 states, 15 states have (on average 14.066666666666666) internal successors, (211), 15 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:18,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:18,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 94 [2023-11-29 04:49:18,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:23,808 INFO L124 PetriNetUnfolderBase]: 46039/63139 cut-off events. [2023-11-29 04:49:23,808 INFO L125 PetriNetUnfolderBase]: For 11005/11005 co-relation queries the response was YES. [2023-11-29 04:49:24,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139256 conditions, 63139 events. 46039/63139 cut-off events. For 11005/11005 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 416472 event pairs, 24204 based on Foata normal form. 1056/43636 useless extension candidates. Maximal degree in co-relation 139240. Up to 35550 conditions per place. [2023-11-29 04:49:24,179 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 95 selfloop transitions, 12 changer transitions 41/156 dead transitions. [2023-11-29 04:49:24,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 782 flow [2023-11-29 04:49:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:49:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:49:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2023-11-29 04:49:24,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2978723404255319 [2023-11-29 04:49:24,182 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 252 transitions. [2023-11-29 04:49:24,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 252 transitions. [2023-11-29 04:49:24,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:24,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 252 transitions. [2023-11-29 04:49:24,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:24,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:24,185 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:24,185 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 300 flow. Second operand 9 states and 252 transitions. [2023-11-29 04:49:24,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 782 flow [2023-11-29 04:49:24,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 767 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:49:24,193 INFO L231 Difference]: Finished difference. Result has 106 places, 82 transitions, 329 flow [2023-11-29 04:49:24,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=329, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2023-11-29 04:49:24,194 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 20 predicate places. [2023-11-29 04:49:24,194 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 329 flow [2023-11-29 04:49:24,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.066666666666666) internal successors, (211), 15 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:24,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:24,195 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-11-29 04:49:24,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:49:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:24,395 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash 35785983, now seen corresponding path program 2 times [2023-11-29 04:49:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:24,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292594270] [2023-11-29 04:49:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292594270] [2023-11-29 04:49:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292594270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549882868] [2023-11-29 04:49:24,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:49:24,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:24,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:24,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:49:24,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:49:24,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:49:24,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:49:24,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:49:24,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:49:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549882868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:24,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:24,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2023-11-29 04:49:24,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752589004] [2023-11-29 04:49:24,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:49:24,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:24,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:49:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:49:24,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:49:24,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 82 transitions, 329 flow. Second operand has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:24,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:24,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:49:24,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:30,500 INFO L124 PetriNetUnfolderBase]: 43583/59636 cut-off events. [2023-11-29 04:49:30,500 INFO L125 PetriNetUnfolderBase]: For 18931/18931 co-relation queries the response was YES. [2023-11-29 04:49:30,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140189 conditions, 59636 events. 43583/59636 cut-off events. For 18931/18931 co-relation queries the response was YES. Maximal size of possible extension queue 2847. Compared 389899 event pairs, 37391 based on Foata normal form. 2/39656 useless extension candidates. Maximal degree in co-relation 140169. Up to 58413 conditions per place. [2023-11-29 04:49:30,943 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 59 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2023-11-29 04:49:30,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 84 transitions, 497 flow [2023-11-29 04:49:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:49:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:49:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 269 transitions. [2023-11-29 04:49:30,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20440729483282674 [2023-11-29 04:49:30,947 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 269 transitions. [2023-11-29 04:49:30,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 269 transitions. [2023-11-29 04:49:30,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:30,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 269 transitions. [2023-11-29 04:49:30,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:30,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:30,952 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:30,953 INFO L175 Difference]: Start difference. First operand has 106 places, 82 transitions, 329 flow. Second operand 14 states and 269 transitions. [2023-11-29 04:49:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 84 transitions, 497 flow [2023-11-29 04:49:30,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 84 transitions, 450 flow, removed 7 selfloop flow, removed 13 redundant places. [2023-11-29 04:49:31,001 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 332 flow [2023-11-29 04:49:31,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=332, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2023-11-29 04:49:31,002 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2023-11-29 04:49:31,002 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 332 flow [2023-11-29 04:49:31,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:31,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:31,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:31,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:49:31,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:31,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1483299694, now seen corresponding path program 2 times [2023-11-29 04:49:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478728153] [2023-11-29 04:49:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478728153] [2023-11-29 04:49:31,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478728153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538699985] [2023-11-29 04:49:31,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:49:31,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:31,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:31,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:31,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:49:31,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:49:31,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:49:31,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:49:31,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:31,890 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 19 treesize of output 1 [2023-11-29 04:49:31,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 04:49:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:31,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:32,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-29 04:49:32,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-29 04:49:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538699985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:32,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:32,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 04:49:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144799091] [2023-11-29 04:49:32,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:32,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:49:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:49:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:49:32,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:49:32,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 332 flow. Second operand has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:32,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:32,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:49:32,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:40,146 INFO L124 PetriNetUnfolderBase]: 64783/88630 cut-off events. [2023-11-29 04:49:40,146 INFO L125 PetriNetUnfolderBase]: For 19967/19967 co-relation queries the response was YES. [2023-11-29 04:49:40,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201139 conditions, 88630 events. 64783/88630 cut-off events. For 19967/19967 co-relation queries the response was YES. Maximal size of possible extension queue 3414. Compared 594555 event pairs, 24515 based on Foata normal form. 0/58339 useless extension candidates. Maximal degree in co-relation 201126. Up to 39627 conditions per place. [2023-11-29 04:49:40,649 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 198 selfloop transitions, 18 changer transitions 0/224 dead transitions. [2023-11-29 04:49:40,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 224 transitions, 1187 flow [2023-11-29 04:49:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:49:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:49:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 360 transitions. [2023-11-29 04:49:40,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3191489361702128 [2023-11-29 04:49:40,651 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 360 transitions. [2023-11-29 04:49:40,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 360 transitions. [2023-11-29 04:49:40,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:40,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 360 transitions. [2023-11-29 04:49:40,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 30.0) internal successors, (360), 12 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:40,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:40,654 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:40,654 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 332 flow. Second operand 12 states and 360 transitions. [2023-11-29 04:49:40,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 224 transitions, 1187 flow [2023-11-29 04:49:41,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 224 transitions, 1112 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-11-29 04:49:41,959 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 332 flow [2023-11-29 04:49:41,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=332, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-29 04:49:41,959 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2023-11-29 04:49:41,960 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 332 flow [2023-11-29 04:49:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:41,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:41,960 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:41,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:49:42,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:49:42,161 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:42,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1483299693, now seen corresponding path program 1 times [2023-11-29 04:49:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:42,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119846463] [2023-11-29 04:49:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119846463] [2023-11-29 04:49:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119846463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798675748] [2023-11-29 04:49:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:42,681 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:42,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:49:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:42,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:49:42,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:42,869 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 19 treesize of output 1 [2023-11-29 04:49:42,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:49:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:42,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:43,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 04:49:43,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 04:49:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:43,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798675748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:43,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:43,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 04:49:43,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733956454] [2023-11-29 04:49:43,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:43,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:49:43,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:49:43,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:49:43,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:49:43,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 332 flow. Second operand has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:43,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:49:43,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:51,302 INFO L124 PetriNetUnfolderBase]: 65579/90278 cut-off events. [2023-11-29 04:49:51,302 INFO L125 PetriNetUnfolderBase]: For 32181/32181 co-relation queries the response was YES. [2023-11-29 04:49:51,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219905 conditions, 90278 events. 65579/90278 cut-off events. For 32181/32181 co-relation queries the response was YES. Maximal size of possible extension queue 3478. Compared 618059 event pairs, 26661 based on Foata normal form. 0/63333 useless extension candidates. Maximal degree in co-relation 219891. Up to 41247 conditions per place. [2023-11-29 04:49:51,796 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 197 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2023-11-29 04:49:51,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 223 transitions, 1167 flow [2023-11-29 04:49:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:49:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:49:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 359 transitions. [2023-11-29 04:49:51,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3182624113475177 [2023-11-29 04:49:51,798 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 359 transitions. [2023-11-29 04:49:51,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 359 transitions. [2023-11-29 04:49:51,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:51,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 359 transitions. [2023-11-29 04:49:51,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 29.916666666666668) internal successors, (359), 12 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,803 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,803 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 332 flow. Second operand 12 states and 359 transitions. [2023-11-29 04:49:51,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 223 transitions, 1167 flow [2023-11-29 04:49:52,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 223 transitions, 1149 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 04:49:52,306 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 346 flow [2023-11-29 04:49:52,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2023-11-29 04:49:52,306 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 18 predicate places. [2023-11-29 04:49:52,306 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 346 flow [2023-11-29 04:49:52,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:52,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:52,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:52,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:49:52,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:49:52,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:49:52,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1483299696, now seen corresponding path program 1 times [2023-11-29 04:49:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272194446] [2023-11-29 04:49:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:52,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:49:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272194446] [2023-11-29 04:49:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272194446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:52,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:52,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:49:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048449074] [2023-11-29 04:49:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:52,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:52,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 94 [2023-11-29 04:49:52,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:52,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:52,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 94 [2023-11-29 04:49:52,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:59,786 INFO L124 PetriNetUnfolderBase]: 60691/83384 cut-off events. [2023-11-29 04:49:59,786 INFO L125 PetriNetUnfolderBase]: For 47859/47859 co-relation queries the response was YES. [2023-11-29 04:50:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209215 conditions, 83384 events. 60691/83384 cut-off events. For 47859/47859 co-relation queries the response was YES. Maximal size of possible extension queue 3085. Compared 568064 event pairs, 39537 based on Foata normal form. 0/60448 useless extension candidates. Maximal degree in co-relation 209201. Up to 61694 conditions per place. [2023-11-29 04:50:00,262 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 122 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-11-29 04:50:00,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 724 flow [2023-11-29 04:50:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:50:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:50:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-29 04:50:00,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2023-11-29 04:50:00,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-29 04:50:00,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-29 04:50:00,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:00,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-29 04:50:00,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:00,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:00,266 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 346 flow. Second operand 3 states and 152 transitions. [2023-11-29 04:50:00,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 724 flow [2023-11-29 04:50:00,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 706 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 04:50:00,467 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 324 flow [2023-11-29 04:50:00,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2023-11-29 04:50:00,468 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2023-11-29 04:50:00,468 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 324 flow [2023-11-29 04:50:00,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:00,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:00,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:00,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:50:00,469 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:50:00,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2017788243, now seen corresponding path program 1 times [2023-11-29 04:50:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:00,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331233323] [2023-11-29 04:50:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:00,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:50:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331233323] [2023-11-29 04:50:00,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331233323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:00,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:00,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:50:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788023851] [2023-11-29 04:50:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:00,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:50:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:50:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:50:00,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 94 [2023-11-29 04:50:00,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:00,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:00,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 94 [2023-11-29 04:50:00,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:09,936 INFO L124 PetriNetUnfolderBase]: 75739/102524 cut-off events. [2023-11-29 04:50:09,936 INFO L125 PetriNetUnfolderBase]: For 68203/68203 co-relation queries the response was YES. [2023-11-29 04:50:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260007 conditions, 102524 events. 75739/102524 cut-off events. For 68203/68203 co-relation queries the response was YES. Maximal size of possible extension queue 3699. Compared 690856 event pairs, 36339 based on Foata normal form. 0/73020 useless extension candidates. Maximal degree in co-relation 259994. Up to 69430 conditions per place. [2023-11-29 04:50:10,550 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 124 selfloop transitions, 3 changer transitions 0/135 dead transitions. [2023-11-29 04:50:10,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 770 flow [2023-11-29 04:50:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:50:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:50:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-11-29 04:50:10,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2023-11-29 04:50:10,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-11-29 04:50:10,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-11-29 04:50:10,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:10,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-11-29 04:50:10,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:10,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:10,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:10,554 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 324 flow. Second operand 3 states and 154 transitions. [2023-11-29 04:50:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 770 flow [2023-11-29 04:50:10,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 135 transitions, 750 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 04:50:10,574 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 339 flow [2023-11-29 04:50:10,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-11-29 04:50:10,575 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2023-11-29 04:50:10,575 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 339 flow [2023-11-29 04:50:10,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:10,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:10,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:10,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:50:10,575 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:50:10,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2017788247, now seen corresponding path program 2 times [2023-11-29 04:50:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639267383] [2023-11-29 04:50:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:10,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:10,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639267383] [2023-11-29 04:50:10,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639267383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499330811] [2023-11-29 04:50:10,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:50:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:10,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:10,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:50:11,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:50:11,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:50:11,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:50:11,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:11,051 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 19 treesize of output 1 [2023-11-29 04:50:11,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:50:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:11,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:11,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 04:50:11,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 04:50:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:11,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499330811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:11,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:11,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 04:50:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437933879] [2023-11-29 04:50:11,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:11,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:50:11,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:11,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:50:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:50:11,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:50:11,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 339 flow. Second operand has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:11,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:11,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:50:11,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:25,314 INFO L124 PetriNetUnfolderBase]: 110119/149148 cut-off events. [2023-11-29 04:50:25,314 INFO L125 PetriNetUnfolderBase]: For 81945/81945 co-relation queries the response was YES. [2023-11-29 04:50:25,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387053 conditions, 149148 events. 110119/149148 cut-off events. For 81945/81945 co-relation queries the response was YES. Maximal size of possible extension queue 5028. Compared 1028076 event pairs, 41345 based on Foata normal form. 0/113374 useless extension candidates. Maximal degree in co-relation 387040. Up to 78517 conditions per place. [2023-11-29 04:50:26,382 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 185 selfloop transitions, 20 changer transitions 0/213 dead transitions. [2023-11-29 04:50:26,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 213 transitions, 1238 flow [2023-11-29 04:50:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:50:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:50:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 343 transitions. [2023-11-29 04:50:26,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30407801418439717 [2023-11-29 04:50:26,384 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 343 transitions. [2023-11-29 04:50:26,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 343 transitions. [2023-11-29 04:50:26,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:26,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 343 transitions. [2023-11-29 04:50:26,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 28.583333333333332) internal successors, (343), 12 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:26,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:26,388 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:26,388 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 339 flow. Second operand 12 states and 343 transitions. [2023-11-29 04:50:26,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 213 transitions, 1238 flow [2023-11-29 04:50:26,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 213 transitions, 1233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:50:26,432 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 429 flow [2023-11-29 04:50:26,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2023-11-29 04:50:26,433 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 25 predicate places. [2023-11-29 04:50:26,433 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 429 flow [2023-11-29 04:50:26,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:26,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:26,433 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:26,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:50:26,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:50:26,634 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:50:26,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2017788246, now seen corresponding path program 1 times [2023-11-29 04:50:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344312637] [2023-11-29 04:50:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:26,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344312637] [2023-11-29 04:50:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344312637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857970651] [2023-11-29 04:50:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:26,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:26,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:26,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:50:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:27,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:50:27,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:27,092 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 19 treesize of output 1 [2023-11-29 04:50:27,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 04:50:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:27,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:27,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-29 04:50:27,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-29 04:50:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:27,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857970651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:27,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:27,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 04:50:27,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887234589] [2023-11-29 04:50:27,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:27,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:50:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:50:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:50:27,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:50:27,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 429 flow. Second operand has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:27,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:27,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:50:27,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:41,581 INFO L124 PetriNetUnfolderBase]: 108861/148174 cut-off events. [2023-11-29 04:50:41,581 INFO L125 PetriNetUnfolderBase]: For 114854/114854 co-relation queries the response was YES. [2023-11-29 04:50:42,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405731 conditions, 148174 events. 108861/148174 cut-off events. For 114854/114854 co-relation queries the response was YES. Maximal size of possible extension queue 5040. Compared 1033646 event pairs, 42521 based on Foata normal form. 2100/119536 useless extension candidates. Maximal degree in co-relation 405715. Up to 77659 conditions per place. [2023-11-29 04:50:42,520 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 184 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2023-11-29 04:50:42,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 212 transitions, 1296 flow [2023-11-29 04:50:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:50:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:50:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 342 transitions. [2023-11-29 04:50:42,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30319148936170215 [2023-11-29 04:50:42,522 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 342 transitions. [2023-11-29 04:50:42,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 342 transitions. [2023-11-29 04:50:42,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:42,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 342 transitions. [2023-11-29 04:50:42,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 28.5) internal successors, (342), 12 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:42,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:42,526 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:42,527 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 429 flow. Second operand 12 states and 342 transitions. [2023-11-29 04:50:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 212 transitions, 1296 flow [2023-11-29 04:50:42,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 212 transitions, 1277 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 04:50:42,659 INFO L231 Difference]: Finished difference. Result has 114 places, 93 transitions, 446 flow [2023-11-29 04:50:42,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=446, PETRI_PLACES=114, PETRI_TRANSITIONS=93} [2023-11-29 04:50:42,660 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 28 predicate places. [2023-11-29 04:50:42,660 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 93 transitions, 446 flow [2023-11-29 04:50:42,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:42,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:42,660 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:42,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:50:42,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:50:42,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:50:42,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1936087210, now seen corresponding path program 1 times [2023-11-29 04:50:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:42,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128120265] [2023-11-29 04:50:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:50:42,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:42,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128120265] [2023-11-29 04:50:42,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128120265] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601205151] [2023-11-29 04:50:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:42,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:42,916 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:42,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:50:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:43,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:50:43,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:43,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601205151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:43,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 9, 9] total 18 [2023-11-29 04:50:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306549284] [2023-11-29 04:50:43,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:43,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:50:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:43,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:50:43,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:50:43,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 94 [2023-11-29 04:50:43,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 93 transitions, 446 flow. Second operand has 19 states, 19 states have (on average 14.157894736842104) internal successors, (269), 19 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:43,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:43,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 94 [2023-11-29 04:50:43,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:03,137 INFO L124 PetriNetUnfolderBase]: 147573/205785 cut-off events. [2023-11-29 04:51:03,138 INFO L125 PetriNetUnfolderBase]: For 188054/188054 co-relation queries the response was YES. [2023-11-29 04:51:03,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563236 conditions, 205785 events. 147573/205785 cut-off events. For 188054/188054 co-relation queries the response was YES. Maximal size of possible extension queue 5776. Compared 1585292 event pairs, 10902 based on Foata normal form. 5928/169382 useless extension candidates. Maximal degree in co-relation 563220. Up to 71874 conditions per place. [2023-11-29 04:51:04,395 INFO L140 encePairwiseOnDemand]: 86/94 looper letters, 389 selfloop transitions, 20 changer transitions 35/452 dead transitions. [2023-11-29 04:51:04,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 452 transitions, 3013 flow [2023-11-29 04:51:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:51:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:51:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 531 transitions. [2023-11-29 04:51:04,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37659574468085105 [2023-11-29 04:51:04,397 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 531 transitions. [2023-11-29 04:51:04,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 531 transitions. [2023-11-29 04:51:04,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:04,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 531 transitions. [2023-11-29 04:51:04,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 35.4) internal successors, (531), 15 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:04,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 94.0) internal successors, (1504), 16 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:04,400 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 94.0) internal successors, (1504), 16 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:04,401 INFO L175 Difference]: Start difference. First operand has 114 places, 93 transitions, 446 flow. Second operand 15 states and 531 transitions. [2023-11-29 04:51:04,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 452 transitions, 3013 flow [2023-11-29 04:51:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 452 transitions, 2965 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-29 04:51:04,474 INFO L231 Difference]: Finished difference. Result has 119 places, 97 transitions, 484 flow [2023-11-29 04:51:04,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=484, PETRI_PLACES=119, PETRI_TRANSITIONS=97} [2023-11-29 04:51:04,474 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 33 predicate places. [2023-11-29 04:51:04,474 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 97 transitions, 484 flow [2023-11-29 04:51:04,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.157894736842104) internal successors, (269), 19 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:04,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:04,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:04,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:51:04,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:04,676 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:51:04,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:04,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2100510292, now seen corresponding path program 1 times [2023-11-29 04:51:04,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:04,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412318431] [2023-11-29 04:51:04,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:04,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:04,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412318431] [2023-11-29 04:51:04,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412318431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:04,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662003281] [2023-11-29 04:51:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:04,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:04,886 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:04,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b010831-3a1a-4eb8-90b6-59ee6483ef56/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:51:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:05,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:51:05,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:05,054 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 19 treesize of output 1 [2023-11-29 04:51:05,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:51:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:05,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:05,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 04:51:05,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 04:51:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662003281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:05,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:51:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 04:51:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113872448] [2023-11-29 04:51:05,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:51:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:51:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:51:05,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 94 [2023-11-29 04:51:05,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 97 transitions, 484 flow. Second operand has 19 states, 19 states have (on average 16.36842105263158) internal successors, (311), 19 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:05,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:05,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 94 [2023-11-29 04:51:05,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand