./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX --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 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:14:24,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:14:24,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:14:24,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:14:24,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:14:25,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:14:25,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:14:25,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:14:25,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:14:25,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:14:25,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:14:25,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:14:25,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:14:25,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:14:25,043 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:14:25,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:14:25,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:14:25,044 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:14:25,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:14:25,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:14:25,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:14:25,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:14:25,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:14:25,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:14:25,051 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:14:25,052 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:14:25,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:14:25,052 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:14:25,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:14:25,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:14:25,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:14:25,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:14:25,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:14:25,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:14:25,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:14:25,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:14:25,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:14:25,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:14:25,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:14:25,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:14:25,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:14:25,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:14:25,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:14:25,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:14:25,061 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_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c [2024-11-08 18:14:25,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:14:25,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:14:25,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:14:25,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:14:25,414 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:14:25,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/fib_unsafe-12.i Unable to find full path for "g++" [2024-11-08 18:14:27,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:14:27,579 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:14:27,579 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-11-08 18:14:27,603 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/data/2b9f5de76/f35573f274fb4408a6c71175ab30fa04/FLAG75872f357 [2024-11-08 18:14:27,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/data/2b9f5de76/f35573f274fb4408a6c71175ab30fa04 [2024-11-08 18:14:27,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:14:27,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:14:27,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:14:27,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:14:27,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:14:27,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:14:27" (1/1) ... [2024-11-08 18:14:27,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d4d17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:27, skipping insertion in model container [2024-11-08 18:14:27,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:14:27" (1/1) ... [2024-11-08 18:14:27,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:14:28,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:14:28,141 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:14:28,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:14:28,271 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:14:28,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28 WrapperNode [2024-11-08 18:14:28,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:14:28,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:14:28,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:14:28,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:14:28,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,329 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-08 18:14:28,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:14:28,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:14:28,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:14:28,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:14:28,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,375 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:14:28,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:14:28,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:14:28,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:14:28,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:14:28,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (1/1) ... [2024-11-08 18:14:28,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:14:28,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:28,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:14:28,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:14:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-08 18:14:28,495 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-08 18:14:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-08 18:14:28,495 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-08 18:14:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:14:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:14:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:14:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:14:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:14:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:14:28,500 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:14:28,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:14:28,760 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:14:28,994 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:14:28,994 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:14:29,166 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:14:29,166 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:14:29,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:14:29 BoogieIcfgContainer [2024-11-08 18:14:29,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:14:29,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:14:29,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:14:29,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:14:29,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:14:27" (1/3) ... [2024-11-08 18:14:29,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bc5314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:14:29, skipping insertion in model container [2024-11-08 18:14:29,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:14:28" (2/3) ... [2024-11-08 18:14:29,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bc5314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:14:29, skipping insertion in model container [2024-11-08 18:14:29,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:14:29" (3/3) ... [2024-11-08 18:14:29,181 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2024-11-08 18:14:29,198 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:14:29,199 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 18:14:29,199 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:14:29,251 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 18:14:29,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 18:14:29,331 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-08 18:14:29,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:14:29,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-08 18:14:29,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 18:14:29,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-08 18:14:29,350 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:14:29,357 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b8078cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:14:29,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-08 18:14:29,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:14:29,366 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-08 18:14:29,366 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:14:29,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:29,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:29,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:29,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1278590766, now seen corresponding path program 1 times [2024-11-08 18:14:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912484371] [2024-11-08 18:14:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:29,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:29,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912484371] [2024-11-08 18:14:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912484371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:29,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130740407] [2024-11-08 18:14:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:29,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:29,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:29,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:29,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:29,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:29,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:29,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:30,382 INFO L124 PetriNetUnfolderBase]: 702/1468 cut-off events. [2024-11-08 18:14:30,383 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-08 18:14:30,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 1468 events. 702/1468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9704 event pairs, 156 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 2471. Up to 514 conditions per place. [2024-11-08 18:14:30,414 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 46 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-08 18:14:30,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 267 flow [2024-11-08 18:14:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-08 18:14:30,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8066037735849056 [2024-11-08 18:14:30,433 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 171 transitions. [2024-11-08 18:14:30,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 267 flow [2024-11-08 18:14:30,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:14:30,447 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 137 flow [2024-11-08 18:14:30,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-11-08 18:14:30,456 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-08 18:14:30,457 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 137 flow [2024-11-08 18:14:30,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:30,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:30,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:30,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:14:30,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:30,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash -365068075, now seen corresponding path program 1 times [2024-11-08 18:14:30,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:30,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381133520] [2024-11-08 18:14:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:30,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:30,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381133520] [2024-11-08 18:14:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381133520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:30,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:30,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930187590] [2024-11-08 18:14:30,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:30,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:30,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:14:30,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:30,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:30,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:14:30,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:31,045 INFO L124 PetriNetUnfolderBase]: 1006/1878 cut-off events. [2024-11-08 18:14:31,045 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-08 18:14:31,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 1878 events. 1006/1878 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12595 event pairs, 213 based on Foata normal form. 115/1622 useless extension candidates. Maximal degree in co-relation 3813. Up to 911 conditions per place. [2024-11-08 18:14:31,063 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-08 18:14:31,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 337 flow [2024-11-08 18:14:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-08 18:14:31,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2024-11-08 18:14:31,068 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 137 flow. Second operand 4 states and 166 transitions. [2024-11-08 18:14:31,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 337 flow [2024-11-08 18:14:31,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:14:31,073 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 163 flow [2024-11-08 18:14:31,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-08 18:14:31,075 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-08 18:14:31,075 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 163 flow [2024-11-08 18:14:31,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:31,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:31,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:31,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:14:31,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:31,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1313995110, now seen corresponding path program 1 times [2024-11-08 18:14:31,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:31,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433453392] [2024-11-08 18:14:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:31,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:31,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433453392] [2024-11-08 18:14:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433453392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:31,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:14:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771784598] [2024-11-08 18:14:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:31,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:14:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:14:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:14:31,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 18:14:31,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:31,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:31,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 18:14:31,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:31,577 INFO L124 PetriNetUnfolderBase]: 1258/2779 cut-off events. [2024-11-08 18:14:31,577 INFO L125 PetriNetUnfolderBase]: For 437/594 co-relation queries the response was YES. [2024-11-08 18:14:31,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 2779 events. 1258/2779 cut-off events. For 437/594 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22184 event pairs, 365 based on Foata normal form. 115/2246 useless extension candidates. Maximal degree in co-relation 5338. Up to 993 conditions per place. [2024-11-08 18:14:31,604 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 18:14:31,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 318 flow [2024-11-08 18:14:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:14:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:14:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 18:14:31,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 18:14:31,608 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 163 flow. Second operand 3 states and 129 transitions. [2024-11-08 18:14:31,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 318 flow [2024-11-08 18:14:31,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:14:31,611 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 173 flow [2024-11-08 18:14:31,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-08 18:14:31,613 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-08 18:14:31,613 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 173 flow [2024-11-08 18:14:31,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:31,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:31,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:31,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:14:31,614 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:31,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2079142475, now seen corresponding path program 1 times [2024-11-08 18:14:31,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:31,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840618300] [2024-11-08 18:14:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:31,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:31,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840618300] [2024-11-08 18:14:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840618300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:31,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:14:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615237808] [2024-11-08 18:14:31,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:31,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:14:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:14:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:14:31,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 18:14:31,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:31,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:31,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 18:14:31,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:32,102 INFO L124 PetriNetUnfolderBase]: 1258/2727 cut-off events. [2024-11-08 18:14:32,102 INFO L125 PetriNetUnfolderBase]: For 561/718 co-relation queries the response was YES. [2024-11-08 18:14:32,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5500 conditions, 2727 events. 1258/2727 cut-off events. For 561/718 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21469 event pairs, 365 based on Foata normal form. 105/2184 useless extension candidates. Maximal degree in co-relation 5478. Up to 993 conditions per place. [2024-11-08 18:14:32,126 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 18:14:32,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 325 flow [2024-11-08 18:14:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:14:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:14:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 18:14:32,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 18:14:32,128 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 173 flow. Second operand 3 states and 129 transitions. [2024-11-08 18:14:32,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 325 flow [2024-11-08 18:14:32,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:14:32,134 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 179 flow [2024-11-08 18:14:32,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-08 18:14:32,135 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-08 18:14:32,135 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 179 flow [2024-11-08 18:14:32,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:32,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:32,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:32,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:14:32,137 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:32,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:32,140 INFO L85 PathProgramCache]: Analyzing trace with hash 689054452, now seen corresponding path program 1 times [2024-11-08 18:14:32,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024844278] [2024-11-08 18:14:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024844278] [2024-11-08 18:14:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024844278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829795497] [2024-11-08 18:14:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:32,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:32,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:14:32,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:32,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:32,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:14:32,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:32,873 INFO L124 PetriNetUnfolderBase]: 2378/4389 cut-off events. [2024-11-08 18:14:32,874 INFO L125 PetriNetUnfolderBase]: For 1326/1773 co-relation queries the response was YES. [2024-11-08 18:14:32,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 4389 events. 2378/4389 cut-off events. For 1326/1773 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33182 event pairs, 457 based on Foata normal form. 319/3959 useless extension candidates. Maximal degree in co-relation 9781. Up to 2321 conditions per place. [2024-11-08 18:14:32,924 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 62 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-08 18:14:32,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 419 flow [2024-11-08 18:14:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-08 18:14:32,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7641509433962265 [2024-11-08 18:14:32,926 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 179 flow. Second operand 4 states and 162 transitions. [2024-11-08 18:14:32,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 419 flow [2024-11-08 18:14:32,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:14:32,935 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 201 flow [2024-11-08 18:14:32,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-08 18:14:32,937 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-08 18:14:32,938 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 201 flow [2024-11-08 18:14:32,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:32,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:32,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:32,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:14:32,940 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:32,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -28907008, now seen corresponding path program 1 times [2024-11-08 18:14:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:32,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727901405] [2024-11-08 18:14:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:33,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727901405] [2024-11-08 18:14:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727901405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:33,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:33,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:33,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510037145] [2024-11-08 18:14:33,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:33,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:33,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 18:14:33,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:33,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:33,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 18:14:33,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:33,536 INFO L124 PetriNetUnfolderBase]: 1874/3805 cut-off events. [2024-11-08 18:14:33,536 INFO L125 PetriNetUnfolderBase]: For 1100/1645 co-relation queries the response was YES. [2024-11-08 18:14:33,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8659 conditions, 3805 events. 1874/3805 cut-off events. For 1100/1645 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30148 event pairs, 227 based on Foata normal form. 447/3619 useless extension candidates. Maximal degree in co-relation 8633. Up to 2025 conditions per place. [2024-11-08 18:14:33,566 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-08 18:14:33,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 463 flow [2024-11-08 18:14:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-08 18:14:33,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-11-08 18:14:33,568 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 201 flow. Second operand 4 states and 164 transitions. [2024-11-08 18:14:33,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 463 flow [2024-11-08 18:14:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:14:33,574 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 221 flow [2024-11-08 18:14:33,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-08 18:14:33,576 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-08 18:14:33,577 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 221 flow [2024-11-08 18:14:33,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:33,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:33,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:33,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:14:33,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:33,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1399838103, now seen corresponding path program 1 times [2024-11-08 18:14:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557968053] [2024-11-08 18:14:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:33,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557968053] [2024-11-08 18:14:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557968053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:33,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:33,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:14:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530617195] [2024-11-08 18:14:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:33,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:14:33,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:33,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:14:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:14:33,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:33,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:33,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:33,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:34,114 INFO L124 PetriNetUnfolderBase]: 1452/2999 cut-off events. [2024-11-08 18:14:34,114 INFO L125 PetriNetUnfolderBase]: For 1510/1894 co-relation queries the response was YES. [2024-11-08 18:14:34,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 2999 events. 1452/2999 cut-off events. For 1510/1894 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21996 event pairs, 216 based on Foata normal form. 77/2720 useless extension candidates. Maximal degree in co-relation 7563. Up to 1291 conditions per place. [2024-11-08 18:14:34,141 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 18:14:34,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 521 flow [2024-11-08 18:14:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:14:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:14:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-08 18:14:34,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7886792452830189 [2024-11-08 18:14:34,142 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 221 flow. Second operand 5 states and 209 transitions. [2024-11-08 18:14:34,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 521 flow [2024-11-08 18:14:34,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:14:34,150 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 250 flow [2024-11-08 18:14:34,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-08 18:14:34,153 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-08 18:14:34,153 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 250 flow [2024-11-08 18:14:34,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:34,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:34,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:34,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:14:34,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:34,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash 274026820, now seen corresponding path program 1 times [2024-11-08 18:14:34,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:34,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889715325] [2024-11-08 18:14:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:34,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:34,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889715325] [2024-11-08 18:14:34,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889715325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:34,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:34,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:14:34,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968416656] [2024-11-08 18:14:34,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:34,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:14:34,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:34,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:14:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:14:34,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:34,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:34,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:34,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:34,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:34,676 INFO L124 PetriNetUnfolderBase]: 1238/2571 cut-off events. [2024-11-08 18:14:34,677 INFO L125 PetriNetUnfolderBase]: For 1744/2093 co-relation queries the response was YES. [2024-11-08 18:14:34,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2571 events. 1238/2571 cut-off events. For 1744/2093 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18246 event pairs, 223 based on Foata normal form. 165/2634 useless extension candidates. Maximal degree in co-relation 6893. Up to 849 conditions per place. [2024-11-08 18:14:34,704 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 18:14:34,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 554 flow [2024-11-08 18:14:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:14:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:14:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-11-08 18:14:34,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7773584905660378 [2024-11-08 18:14:34,707 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 250 flow. Second operand 5 states and 206 transitions. [2024-11-08 18:14:34,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 554 flow [2024-11-08 18:14:34,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 539 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:34,714 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 264 flow [2024-11-08 18:14:34,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-08 18:14:34,715 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-08 18:14:34,716 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 264 flow [2024-11-08 18:14:34,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:34,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:34,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:34,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:14:34,717 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:34,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:34,718 INFO L85 PathProgramCache]: Analyzing trace with hash 274268111, now seen corresponding path program 1 times [2024-11-08 18:14:34,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:34,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468691289] [2024-11-08 18:14:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:34,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:34,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468691289] [2024-11-08 18:14:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468691289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:34,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:14:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138638669] [2024-11-08 18:14:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:34,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:14:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:14:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:14:34,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:34,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:34,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:34,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:34,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:35,297 INFO L124 PetriNetUnfolderBase]: 1350/2823 cut-off events. [2024-11-08 18:14:35,298 INFO L125 PetriNetUnfolderBase]: For 2689/3052 co-relation queries the response was YES. [2024-11-08 18:14:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 2823 events. 1350/2823 cut-off events. For 2689/3052 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20505 event pairs, 279 based on Foata normal form. 119/2938 useless extension candidates. Maximal degree in co-relation 7794. Up to 1236 conditions per place. [2024-11-08 18:14:35,330 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 65 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-11-08 18:14:35,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 576 flow [2024-11-08 18:14:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:14:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:14:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-08 18:14:35,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811320754716982 [2024-11-08 18:14:35,333 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 264 flow. Second operand 5 states and 207 transitions. [2024-11-08 18:14:35,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 576 flow [2024-11-08 18:14:35,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 563 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:35,341 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 316 flow [2024-11-08 18:14:35,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-08 18:14:35,344 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-08 18:14:35,344 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 316 flow [2024-11-08 18:14:35,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:35,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:35,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:35,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:14:35,347 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:35,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash 274268110, now seen corresponding path program 1 times [2024-11-08 18:14:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069278218] [2024-11-08 18:14:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:35,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:35,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:35,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069278218] [2024-11-08 18:14:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069278218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:35,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:35,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:14:35,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729561593] [2024-11-08 18:14:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:35,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:14:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:14:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:14:35,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:35,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:35,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:35,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:35,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:35,837 INFO L124 PetriNetUnfolderBase]: 1168/2501 cut-off events. [2024-11-08 18:14:35,838 INFO L125 PetriNetUnfolderBase]: For 3550/3860 co-relation queries the response was YES. [2024-11-08 18:14:35,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 2501 events. 1168/2501 cut-off events. For 3550/3860 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17836 event pairs, 258 based on Foata normal form. 147/2644 useless extension candidates. Maximal degree in co-relation 7154. Up to 1229 conditions per place. [2024-11-08 18:14:35,862 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-08 18:14:35,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 514 flow [2024-11-08 18:14:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:14:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:14:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-08 18:14:35,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283018867924528 [2024-11-08 18:14:35,864 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 316 flow. Second operand 5 states and 193 transitions. [2024-11-08 18:14:35,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 514 flow [2024-11-08 18:14:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 496 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:35,874 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 297 flow [2024-11-08 18:14:35,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-11-08 18:14:35,875 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 18:14:35,875 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 297 flow [2024-11-08 18:14:35,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:35,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:35,876 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:35,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:14:35,878 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:35,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash -286089201, now seen corresponding path program 1 times [2024-11-08 18:14:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:35,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006629661] [2024-11-08 18:14:35,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:35,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:35,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006629661] [2024-11-08 18:14:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006629661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:35,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308674755] [2024-11-08 18:14:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:35,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:35,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:35,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:35,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:14:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:36,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:14:36,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:36,172 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:14:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308674755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:14:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:14:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950667023] [2024-11-08 18:14:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:36,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:14:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:14:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:14:36,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:14:36,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:36,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:36,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:14:36,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:36,754 INFO L124 PetriNetUnfolderBase]: 1723/3208 cut-off events. [2024-11-08 18:14:36,754 INFO L125 PetriNetUnfolderBase]: For 5090/5563 co-relation queries the response was YES. [2024-11-08 18:14:36,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9675 conditions, 3208 events. 1723/3208 cut-off events. For 5090/5563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22423 event pairs, 325 based on Foata normal form. 141/3245 useless extension candidates. Maximal degree in co-relation 9639. Up to 1368 conditions per place. [2024-11-08 18:14:36,788 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 86 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-08 18:14:36,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 719 flow [2024-11-08 18:14:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:14:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:14:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 18:14:36,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 18:14:36,790 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 297 flow. Second operand 6 states and 226 transitions. [2024-11-08 18:14:36,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 719 flow [2024-11-08 18:14:36,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 710 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:36,800 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 294 flow [2024-11-08 18:14:36,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-08 18:14:36,800 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-08 18:14:36,801 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 294 flow [2024-11-08 18:14:36,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:36,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:36,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:36,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:14:37,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:14:37,003 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:37,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1297340425, now seen corresponding path program 1 times [2024-11-08 18:14:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751314972] [2024-11-08 18:14:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:37,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751314972] [2024-11-08 18:14:37,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751314972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385630566] [2024-11-08 18:14:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:37,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:37,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:37,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:37,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:14:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:37,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:14:37,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:37,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:14:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385630566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:37,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:14:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-08 18:14:37,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247571292] [2024-11-08 18:14:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:37,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:14:37,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 18:14:37,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:37,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:37,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 18:14:37,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:37,700 INFO L124 PetriNetUnfolderBase]: 1168/2762 cut-off events. [2024-11-08 18:14:37,700 INFO L125 PetriNetUnfolderBase]: For 4282/4478 co-relation queries the response was YES. [2024-11-08 18:14:37,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 2762 events. 1168/2762 cut-off events. For 4282/4478 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21829 event pairs, 187 based on Foata normal form. 122/2803 useless extension candidates. Maximal degree in co-relation 7462. Up to 1216 conditions per place. [2024-11-08 18:14:37,729 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 54 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-08 18:14:37,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 537 flow [2024-11-08 18:14:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-08 18:14:37,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2024-11-08 18:14:37,730 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 294 flow. Second operand 4 states and 156 transitions. [2024-11-08 18:14:37,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 537 flow [2024-11-08 18:14:37,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 531 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:37,738 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 289 flow [2024-11-08 18:14:37,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-11-08 18:14:37,739 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 18:14:37,739 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 289 flow [2024-11-08 18:14:37,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:37,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:37,740 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:37,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:14:37,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:14:37,940 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:37,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -278830309, now seen corresponding path program 1 times [2024-11-08 18:14:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:37,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692887578] [2024-11-08 18:14:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:14:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692887578] [2024-11-08 18:14:37,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692887578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:37,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:37,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:37,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963057125] [2024-11-08 18:14:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:37,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:37,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:37,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 18:14:37,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:37,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:37,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 18:14:37,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:38,532 INFO L124 PetriNetUnfolderBase]: 2118/3986 cut-off events. [2024-11-08 18:14:38,532 INFO L125 PetriNetUnfolderBase]: For 6443/7287 co-relation queries the response was YES. [2024-11-08 18:14:38,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 3986 events. 2118/3986 cut-off events. For 6443/7287 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29101 event pairs, 1026 based on Foata normal form. 208/4045 useless extension candidates. Maximal degree in co-relation 11880. Up to 1979 conditions per place. [2024-11-08 18:14:38,570 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-11-08 18:14:38,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 611 flow [2024-11-08 18:14:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-08 18:14:38,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7122641509433962 [2024-11-08 18:14:38,572 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 289 flow. Second operand 4 states and 151 transitions. [2024-11-08 18:14:38,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 611 flow [2024-11-08 18:14:38,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 602 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:38,584 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 294 flow [2024-11-08 18:14:38,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-08 18:14:38,585 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 18:14:38,585 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 294 flow [2024-11-08 18:14:38,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:38,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:38,586 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:38,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:14:38,586 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:38,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1562847782, now seen corresponding path program 1 times [2024-11-08 18:14:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874127820] [2024-11-08 18:14:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:38,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:38,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874127820] [2024-11-08 18:14:38,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874127820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134124467] [2024-11-08 18:14:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:38,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:38,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:38,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:38,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:14:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:38,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:14:38,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:38,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134124467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:14:38,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:14:38,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-08 18:14:38,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348510827] [2024-11-08 18:14:38,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:14:38,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:14:38,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:14:38,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:14:38,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:38,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:38,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:38,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:38,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:40,139 INFO L124 PetriNetUnfolderBase]: 3218/7231 cut-off events. [2024-11-08 18:14:40,139 INFO L125 PetriNetUnfolderBase]: For 12411/12871 co-relation queries the response was YES. [2024-11-08 18:14:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 7231 events. 3218/7231 cut-off events. For 12411/12871 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 62368 event pairs, 187 based on Foata normal form. 370/7520 useless extension candidates. Maximal degree in co-relation 19366. Up to 1217 conditions per place. [2024-11-08 18:14:40,225 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 129 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-11-08 18:14:40,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 161 transitions, 1142 flow [2024-11-08 18:14:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:14:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:14:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-08 18:14:40,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2024-11-08 18:14:40,228 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 294 flow. Second operand 6 states and 261 transitions. [2024-11-08 18:14:40,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 161 transitions, 1142 flow [2024-11-08 18:14:40,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:14:40,243 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 322 flow [2024-11-08 18:14:40,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2024-11-08 18:14:40,244 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-08 18:14:40,244 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 322 flow [2024-11-08 18:14:40,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:40,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:40,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:40,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:14:40,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:14:40,447 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:40,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash -254368722, now seen corresponding path program 1 times [2024-11-08 18:14:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:40,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690090018] [2024-11-08 18:14:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:40,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690090018] [2024-11-08 18:14:40,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690090018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174801143] [2024-11-08 18:14:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:40,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:40,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:40,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:40,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:14:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:40,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:14:40,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:40,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:14:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174801143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:40,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:14:40,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:14:40,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616449943] [2024-11-08 18:14:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:40,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:14:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:40,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:14:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:14:40,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:14:40,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:40,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:40,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:14:40,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:41,930 INFO L124 PetriNetUnfolderBase]: 4393/8099 cut-off events. [2024-11-08 18:14:41,930 INFO L125 PetriNetUnfolderBase]: For 15530/16016 co-relation queries the response was YES. [2024-11-08 18:14:41,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25015 conditions, 8099 events. 4393/8099 cut-off events. For 15530/16016 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 62345 event pairs, 833 based on Foata normal form. 162/8057 useless extension candidates. Maximal degree in co-relation 24976. Up to 3420 conditions per place. [2024-11-08 18:14:42,008 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 92 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-08 18:14:42,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 826 flow [2024-11-08 18:14:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:14:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:14:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-11-08 18:14:42,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2024-11-08 18:14:42,011 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 322 flow. Second operand 6 states and 220 transitions. [2024-11-08 18:14:42,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 826 flow [2024-11-08 18:14:42,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 784 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-08 18:14:42,030 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 316 flow [2024-11-08 18:14:42,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-11-08 18:14:42,031 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 18:14:42,032 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 316 flow [2024-11-08 18:14:42,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:42,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:42,033 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:42,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:14:42,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 18:14:42,234 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:42,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1203641263, now seen corresponding path program 1 times [2024-11-08 18:14:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:42,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178999833] [2024-11-08 18:14:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:42,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:42,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:42,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178999833] [2024-11-08 18:14:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178999833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815068153] [2024-11-08 18:14:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:42,334 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:42,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:14:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:42,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:14:42,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:42,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:14:42,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815068153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:42,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:14:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:14:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745728082] [2024-11-08 18:14:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:42,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:14:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:14:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:14:42,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 18:14:42,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:42,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:42,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 18:14:42,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:43,643 INFO L124 PetriNetUnfolderBase]: 4130/7910 cut-off events. [2024-11-08 18:14:43,643 INFO L125 PetriNetUnfolderBase]: For 16960/17171 co-relation queries the response was YES. [2024-11-08 18:14:43,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 7910 events. 4130/7910 cut-off events. For 16960/17171 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 62279 event pairs, 187 based on Foata normal form. 228/7829 useless extension candidates. Maximal degree in co-relation 24099. Up to 3952 conditions per place. [2024-11-08 18:14:43,699 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 98 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2024-11-08 18:14:43,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 941 flow [2024-11-08 18:14:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:14:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:14:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 18:14:43,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 18:14:43,701 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 316 flow. Second operand 6 states and 226 transitions. [2024-11-08 18:14:43,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 941 flow [2024-11-08 18:14:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 933 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:43,720 INFO L231 Difference]: Finished difference. Result has 89 places, 63 transitions, 323 flow [2024-11-08 18:14:43,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2024-11-08 18:14:43,720 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-08 18:14:43,720 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 323 flow [2024-11-08 18:14:43,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:43,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:43,721 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:43,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:14:43,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:14:43,922 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:43,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 704504554, now seen corresponding path program 1 times [2024-11-08 18:14:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:43,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20179658] [2024-11-08 18:14:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:43,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:14:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20179658] [2024-11-08 18:14:43,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20179658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:43,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:43,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377296154] [2024-11-08 18:14:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:43,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:43,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 18:14:43,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:43,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:43,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 18:14:43,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:45,105 INFO L124 PetriNetUnfolderBase]: 5275/8873 cut-off events. [2024-11-08 18:14:45,105 INFO L125 PetriNetUnfolderBase]: For 16786/17110 co-relation queries the response was YES. [2024-11-08 18:14:45,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29410 conditions, 8873 events. 5275/8873 cut-off events. For 16786/17110 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 65183 event pairs, 2749 based on Foata normal form. 360/8922 useless extension candidates. Maximal degree in co-relation 29371. Up to 5007 conditions per place. [2024-11-08 18:14:45,167 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-08 18:14:45,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 705 flow [2024-11-08 18:14:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-08 18:14:45,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933962264150944 [2024-11-08 18:14:45,169 INFO L175 Difference]: Start difference. First operand has 89 places, 63 transitions, 323 flow. Second operand 4 states and 147 transitions. [2024-11-08 18:14:45,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 705 flow [2024-11-08 18:14:45,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 690 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 18:14:45,200 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 326 flow [2024-11-08 18:14:45,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-11-08 18:14:45,200 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 18:14:45,200 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 326 flow [2024-11-08 18:14:45,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:45,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:45,201 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:45,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:14:45,201 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:45,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1341826200, now seen corresponding path program 1 times [2024-11-08 18:14:45,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:45,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144723844] [2024-11-08 18:14:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:14:45,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:45,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144723844] [2024-11-08 18:14:45,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144723844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:45,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:14:45,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:14:45,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947674684] [2024-11-08 18:14:45,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:45,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:14:45,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:14:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:14:45,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 18:14:45,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) [2024-11-08 18:14:45,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:45,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 18:14:45,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:46,617 INFO L124 PetriNetUnfolderBase]: 4883/8484 cut-off events. [2024-11-08 18:14:46,617 INFO L125 PetriNetUnfolderBase]: For 22783/22783 co-relation queries the response was YES. [2024-11-08 18:14:46,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28277 conditions, 8484 events. 4883/8484 cut-off events. For 22783/22783 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 62987 event pairs, 1417 based on Foata normal form. 532/8919 useless extension candidates. Maximal degree in co-relation 28238. Up to 3649 conditions per place. [2024-11-08 18:14:46,656 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-08 18:14:46,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 772 flow [2024-11-08 18:14:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:14:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:14:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-08 18:14:46,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-08 18:14:46,657 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 326 flow. Second operand 4 states and 152 transitions. [2024-11-08 18:14:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 772 flow [2024-11-08 18:14:46,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 756 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:14:46,677 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 332 flow [2024-11-08 18:14:46,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-08 18:14:46,677 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 18:14:46,677 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 332 flow [2024-11-08 18:14:46,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) [2024-11-08 18:14:46,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:46,678 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:46,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:14:46,678 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:46,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:46,678 INFO L85 PathProgramCache]: Analyzing trace with hash 593073353, now seen corresponding path program 1 times [2024-11-08 18:14:46,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:46,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463018588] [2024-11-08 18:14:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:46,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:46,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463018588] [2024-11-08 18:14:46,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463018588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:46,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509540821] [2024-11-08 18:14:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:46,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:46,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:46,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:14:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:46,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:14:46,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:47,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:47,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509540821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:14:47,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:14:47,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-08 18:14:47,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032686292] [2024-11-08 18:14:47,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:14:47,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:14:47,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:14:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:14:47,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:47,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 332 flow. Second operand has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:47,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:47,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:47,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:50,994 INFO L124 PetriNetUnfolderBase]: 11247/23465 cut-off events. [2024-11-08 18:14:50,994 INFO L125 PetriNetUnfolderBase]: For 69193/69193 co-relation queries the response was YES. [2024-11-08 18:14:51,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78922 conditions, 23465 events. 11247/23465 cut-off events. For 69193/69193 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 228854 event pairs, 341 based on Foata normal form. 1442/24903 useless extension candidates. Maximal degree in co-relation 78880. Up to 4201 conditions per place. [2024-11-08 18:14:51,129 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 393 selfloop transitions, 71 changer transitions 0/486 dead transitions. [2024-11-08 18:14:51,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 486 transitions, 4012 flow [2024-11-08 18:14:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:14:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 18:14:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1157 transitions. [2024-11-08 18:14:51,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7796495956873315 [2024-11-08 18:14:51,133 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 332 flow. Second operand 28 states and 1157 transitions. [2024-11-08 18:14:51,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 486 transitions, 4012 flow [2024-11-08 18:14:51,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 486 transitions, 3710 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:14:51,205 INFO L231 Difference]: Finished difference. Result has 129 places, 133 transitions, 1286 flow [2024-11-08 18:14:51,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1286, PETRI_PLACES=129, PETRI_TRANSITIONS=133} [2024-11-08 18:14:51,206 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-11-08 18:14:51,206 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 133 transitions, 1286 flow [2024-11-08 18:14:51,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:51,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:51,207 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:51,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:14:51,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:51,408 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:51,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash 399273466, now seen corresponding path program 1 times [2024-11-08 18:14:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:51,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210707754] [2024-11-08 18:14:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210707754] [2024-11-08 18:14:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210707754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764790029] [2024-11-08 18:14:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:51,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:51,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:51,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:14:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:51,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:14:51,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:51,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:14:51,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764790029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:14:51,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:14:51,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-08 18:14:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765153542] [2024-11-08 18:14:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:14:51,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:14:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:14:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:14:51,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:51,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 133 transitions, 1286 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:51,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:51,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:51,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:14:54,892 INFO L124 PetriNetUnfolderBase]: 9393/20737 cut-off events. [2024-11-08 18:14:54,892 INFO L125 PetriNetUnfolderBase]: For 207024/207024 co-relation queries the response was YES. [2024-11-08 18:14:55,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81772 conditions, 20737 events. 9393/20737 cut-off events. For 207024/207024 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 205252 event pairs, 1649 based on Foata normal form. 1656/22331 useless extension candidates. Maximal degree in co-relation 81711. Up to 6826 conditions per place. [2024-11-08 18:14:55,230 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 88 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-11-08 18:14:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 1421 flow [2024-11-08 18:14:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:14:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:14:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-11-08 18:14:55,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2024-11-08 18:14:55,233 INFO L175 Difference]: Start difference. First operand has 129 places, 133 transitions, 1286 flow. Second operand 6 states and 227 transitions. [2024-11-08 18:14:55,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 1421 flow [2024-11-08 18:14:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 137 transitions, 1144 flow, removed 113 selfloop flow, removed 13 redundant places. [2024-11-08 18:14:57,028 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 725 flow [2024-11-08 18:14:57,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-08 18:14:57,029 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-08 18:14:57,029 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 725 flow [2024-11-08 18:14:57,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:57,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:14:57,030 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:57,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:14:57,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:57,231 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:14:57,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1263102071, now seen corresponding path program 1 times [2024-11-08 18:14:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699744066] [2024-11-08 18:14:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:57,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:57,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699744066] [2024-11-08 18:14:57,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699744066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285348914] [2024-11-08 18:14:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:57,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:57,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:57,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:57,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:14:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:57,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:14:57,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:57,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:14:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285348914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:14:57,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:14:57,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-08 18:14:57,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078548896] [2024-11-08 18:14:57,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:14:57,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:14:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:14:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:14:57,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:14:57,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 725 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:14:57,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:14:57,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:14:57,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:15:02,332 INFO L124 PetriNetUnfolderBase]: 13285/29345 cut-off events. [2024-11-08 18:15:02,332 INFO L125 PetriNetUnfolderBase]: For 254401/254401 co-relation queries the response was YES. [2024-11-08 18:15:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106768 conditions, 29345 events. 13285/29345 cut-off events. For 254401/254401 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 305533 event pairs, 539 based on Foata normal form. 908/30195 useless extension candidates. Maximal degree in co-relation 106713. Up to 7399 conditions per place. [2024-11-08 18:15:02,881 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 304 selfloop transitions, 54 changer transitions 0/380 dead transitions. [2024-11-08 18:15:02,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 380 transitions, 3057 flow [2024-11-08 18:15:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:15:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 18:15:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 841 transitions. [2024-11-08 18:15:02,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556154537286612 [2024-11-08 18:15:02,885 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 725 flow. Second operand 21 states and 841 transitions. [2024-11-08 18:15:02,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 380 transitions, 3057 flow [2024-11-08 18:15:03,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 380 transitions, 3040 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 18:15:03,438 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1120 flow [2024-11-08 18:15:03,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1120, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-08 18:15:03,439 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-08 18:15:03,439 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1120 flow [2024-11-08 18:15:03,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:03,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:15:03,440 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:15:03,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:15:03,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:03,640 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:15:03,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:15:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1521931797, now seen corresponding path program 1 times [2024-11-08 18:15:03,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:15:03,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580503240] [2024-11-08 18:15:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:03,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:15:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580503240] [2024-11-08 18:15:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580503240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:15:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502812413] [2024-11-08 18:15:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:15:03,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:15:03,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:15:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:03,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:15:03,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:15:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:04,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:15:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502812413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:15:04,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:15:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-08 18:15:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660733471] [2024-11-08 18:15:04,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:15:04,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:15:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:15:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:15:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:15:04,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:15:04,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1120 flow. Second operand has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:04,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:15:04,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:15:04,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:15:14,443 INFO L124 PetriNetUnfolderBase]: 25129/56597 cut-off events. [2024-11-08 18:15:14,443 INFO L125 PetriNetUnfolderBase]: For 909044/909044 co-relation queries the response was YES. [2024-11-08 18:15:14,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208544 conditions, 56597 events. 25129/56597 cut-off events. For 909044/909044 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 644215 event pairs, 1241 based on Foata normal form. 2988/59581 useless extension candidates. Maximal degree in co-relation 208483. Up to 6607 conditions per place. [2024-11-08 18:15:15,010 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 521 selfloop transitions, 118 changer transitions 0/661 dead transitions. [2024-11-08 18:15:15,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 661 transitions, 5775 flow [2024-11-08 18:15:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 18:15:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 18:15:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1492 transitions. [2024-11-08 18:15:15,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608363080061193 [2024-11-08 18:15:15,014 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1120 flow. Second operand 37 states and 1492 transitions. [2024-11-08 18:15:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 661 transitions, 5775 flow [2024-11-08 18:15:17,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 661 transitions, 5621 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-11-08 18:15:17,679 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2153 flow [2024-11-08 18:15:17,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2153, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-08 18:15:17,680 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-08 18:15:17,680 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2153 flow [2024-11-08 18:15:17,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:17,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:15:17,681 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:15:17,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:15:17,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:17,882 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:15:17,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:15:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1496225031, now seen corresponding path program 2 times [2024-11-08 18:15:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:15:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960483819] [2024-11-08 18:15:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:17,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:15:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:18,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960483819] [2024-11-08 18:15:18,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960483819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:15:18,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613913009] [2024-11-08 18:15:18,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:15:18,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:15:18,075 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:15:18,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6f092b-8f22-4a95-a75b-9790335b3802/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:15:18,147 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:15:18,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:15:18,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:15:18,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:15:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:18,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:15:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:18,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613913009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:15:18,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:15:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-08 18:15:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829848485] [2024-11-08 18:15:18,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:15:18,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:15:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:15:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:15:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:15:18,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2024-11-08 18:15:18,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2153 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:18,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:15:18,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2024-11-08 18:15:18,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand