./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:35:36,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:35:36,266 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:35:36,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:35:36,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:35:36,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:35:36,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:35:36,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:35:36,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:35:36,295 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:35:36,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:35:36,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:35:36,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:35:36,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:35:36,297 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:35:36,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:35:36,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:35:36,299 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:35:36,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:35:36,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:35:36,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:35:36,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:35:36,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:35:36,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:35:36,306 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:35:36,306 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:35:36,306 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:35:36,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:35:36,307 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:35:36,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:35:36,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:35:36,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:35:36,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:35:36,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:35:36,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:35:36,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:35:36,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:35:36,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:35:36,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:35:36,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:35:36,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:35:36,312 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:35:36,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:35:36,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:35:36,312 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_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2023-11-29 02:35:36,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:35:36,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:35:36,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:35:36,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:35:36,587 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:35:36,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-29 02:35:39,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:35:39,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:35:39,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-29 02:35:39,558 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/data/370165ed7/701603861eb44764aa076b22f845aaee/FLAG8c9e4466d [2023-11-29 02:35:39,572 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/data/370165ed7/701603861eb44764aa076b22f845aaee [2023-11-29 02:35:39,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:35:39,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:35:39,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:35:39,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:35:39,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:35:39,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:35:39" (1/1) ... [2023-11-29 02:35:39,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0fa881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:39, skipping insertion in model container [2023-11-29 02:35:39,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:35:39" (1/1) ... [2023-11-29 02:35:39,638 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:35:40,073 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,074 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,074 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,075 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:35:40,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:35:40,149 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,149 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,150 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,150 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 02:35:40,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:35:40,208 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:35:40,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40 WrapperNode [2023-11-29 02:35:40,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:35:40,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:35:40,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:35:40,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:35:40,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,265 INFO L138 Inliner]: procedures = 278, calls = 50, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 218 [2023-11-29 02:35:40,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:35:40,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:35:40,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:35:40,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:35:40,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,307 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 19, 5, 2]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 14 writes are split as follows [0, 13, 0, 1]. [2023-11-29 02:35:40,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:35:40,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:35:40,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:35:40,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:35:40,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (1/1) ... [2023-11-29 02:35:40,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:35:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:40,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:35:40,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:35:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:35:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:35:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 02:35:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 02:35:40,400 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 02:35:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:35:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:35:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:35:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:35:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:35:40,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:35:40,402 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 02:35:40,574 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:35:40,576 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:35:40,892 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:35:41,125 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:35:41,125 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 02:35:41,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:35:41 BoogieIcfgContainer [2023-11-29 02:35:41,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:35:41,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:35:41,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:35:41,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:35:41,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:35:39" (1/3) ... [2023-11-29 02:35:41,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426497e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:35:41, skipping insertion in model container [2023-11-29 02:35:41,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:35:40" (2/3) ... [2023-11-29 02:35:41,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426497e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:35:41, skipping insertion in model container [2023-11-29 02:35:41,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:35:41" (3/3) ... [2023-11-29 02:35:41,134 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-11-29 02:35:41,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:35:41,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:35:41,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 02:35:41,154 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:35:41,214 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 02:35:41,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 87 transitions, 181 flow [2023-11-29 02:35:41,287 INFO L124 PetriNetUnfolderBase]: 16/91 cut-off events. [2023-11-29 02:35:41,288 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:35:41,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 16/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 258 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-29 02:35:41,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 87 transitions, 181 flow [2023-11-29 02:35:41,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 179 flow [2023-11-29 02:35:41,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:35:41,312 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4761a2ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:35:41,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-29 02:35:41,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:35:41,317 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-29 02:35:41,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:35:41,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:41,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 02:35:41,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:41,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash 18747147, now seen corresponding path program 1 times [2023-11-29 02:35:41,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:41,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004863508] [2023-11-29 02:35:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:41,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:41,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38727469] [2023-11-29 02:35:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:41,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:41,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:41,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:35:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:41,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:35:41,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:41,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004863508] [2023-11-29 02:35:41,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38727469] [2023-11-29 02:35:41,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38727469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:41,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:41,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:35:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199137325] [2023-11-29 02:35:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:35:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:41,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:35:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:35:41,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:41,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:41,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:41,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:41,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:41,957 INFO L124 PetriNetUnfolderBase]: 150/477 cut-off events. [2023-11-29 02:35:41,957 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:35:41,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 477 events. 150/477 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2249 event pairs, 126 based on Foata normal form. 43/437 useless extension candidates. Maximal degree in co-relation 729. Up to 310 conditions per place. [2023-11-29 02:35:41,964 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 44 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-29 02:35:41,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 261 flow [2023-11-29 02:35:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:35:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:35:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-11-29 02:35:41,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6283524904214559 [2023-11-29 02:35:41,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-11-29 02:35:41,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-11-29 02:35:41,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:41,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-11-29 02:35:41,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:41,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:41,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:41,991 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 179 flow. Second operand 3 states and 164 transitions. [2023-11-29 02:35:41,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 261 flow [2023-11-29 02:35:41,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 261 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:35:41,999 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 175 flow [2023-11-29 02:35:42,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-29 02:35:42,005 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-29 02:35:42,005 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 175 flow [2023-11-29 02:35:42,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:42,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 02:35:42,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:35:42,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:35:42,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:42,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 18747139, now seen corresponding path program 1 times [2023-11-29 02:35:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753892007] [2023-11-29 02:35:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:42,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753892007] [2023-11-29 02:35:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753892007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:42,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:35:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678240408] [2023-11-29 02:35:42,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:35:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:35:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:35:42,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:42,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:42,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:42,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:42,570 INFO L124 PetriNetUnfolderBase]: 150/491 cut-off events. [2023-11-29 02:35:42,570 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 02:35:42,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 491 events. 150/491 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2317 event pairs, 126 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 787. Up to 315 conditions per place. [2023-11-29 02:35:42,575 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-29 02:35:42,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 267 flow [2023-11-29 02:35:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:35:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:35:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-29 02:35:42,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578544061302682 [2023-11-29 02:35:42,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-29 02:35:42,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-29 02:35:42,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:42,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-29 02:35:42,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,582 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 175 flow. Second operand 3 states and 151 transitions. [2023-11-29 02:35:42,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 267 flow [2023-11-29 02:35:42,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:35:42,598 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 189 flow [2023-11-29 02:35:42,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-11-29 02:35:42,600 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-11-29 02:35:42,600 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 189 flow [2023-11-29 02:35:42,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:42,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:35:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:35:42,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:42,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash 836159281, now seen corresponding path program 1 times [2023-11-29 02:35:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986681053] [2023-11-29 02:35:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:42,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599016177] [2023-11-29 02:35:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:42,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:42,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:42,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:42,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:35:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:42,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:35:42,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:42,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986681053] [2023-11-29 02:35:42,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:42,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599016177] [2023-11-29 02:35:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599016177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:42,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:42,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:35:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986512680] [2023-11-29 02:35:42,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:42,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:35:42,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:35:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:35:42,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:42,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:42,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:42,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:42,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:43,096 INFO L124 PetriNetUnfolderBase]: 150/487 cut-off events. [2023-11-29 02:35:43,096 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 02:35:43,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 487 events. 150/487 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2286 event pairs, 126 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 772. Up to 307 conditions per place. [2023-11-29 02:35:43,100 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 37 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-11-29 02:35:43,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 271 flow [2023-11-29 02:35:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:35:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:35:43,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 02:35:43,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-29 02:35:43,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 02:35:43,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 02:35:43,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:43,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 02:35:43,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,108 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 189 flow. Second operand 4 states and 181 transitions. [2023-11-29 02:35:43,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 271 flow [2023-11-29 02:35:43,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:35:43,112 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 195 flow [2023-11-29 02:35:43,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-29 02:35:43,113 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-29 02:35:43,113 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 195 flow [2023-11-29 02:35:43,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:43,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:35:43,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:35:43,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:43,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:43,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:43,315 INFO L85 PathProgramCache]: Analyzing trace with hash 151134513, now seen corresponding path program 1 times [2023-11-29 02:35:43,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304222543] [2023-11-29 02:35:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:43,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:43,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660342784] [2023-11-29 02:35:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:43,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:43,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:43,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:35:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:43,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:35:43,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:43,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:43,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:43,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304222543] [2023-11-29 02:35:43,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:43,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660342784] [2023-11-29 02:35:43,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660342784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:43,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:43,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:35:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353673465] [2023-11-29 02:35:43,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:43,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:35:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:35:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:35:43,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:43,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:43,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:43,861 INFO L124 PetriNetUnfolderBase]: 150/485 cut-off events. [2023-11-29 02:35:43,861 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 02:35:43,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 485 events. 150/485 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2275 event pairs, 126 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 759. Up to 315 conditions per place. [2023-11-29 02:35:43,865 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 40 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-29 02:35:43,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 285 flow [2023-11-29 02:35:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:35:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:35:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2023-11-29 02:35:43,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2023-11-29 02:35:43,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 183 transitions. [2023-11-29 02:35:43,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 183 transitions. [2023-11-29 02:35:43,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:43,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 183 transitions. [2023-11-29 02:35:43,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,870 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,871 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 195 flow. Second operand 4 states and 183 transitions. [2023-11-29 02:35:43,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 285 flow [2023-11-29 02:35:43,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:35:43,874 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 201 flow [2023-11-29 02:35:43,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-29 02:35:43,875 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-11-29 02:35:43,875 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 201 flow [2023-11-29 02:35:43,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:43,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:43,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:35:43,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:35:44,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:44,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:44,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash -788602861, now seen corresponding path program 1 times [2023-11-29 02:35:44,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:44,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539719915] [2023-11-29 02:35:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:44,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:44,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373971651] [2023-11-29 02:35:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:44,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:35:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:44,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:35:44,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:44,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:35:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:44,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539719915] [2023-11-29 02:35:44,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:44,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373971651] [2023-11-29 02:35:44,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373971651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:35:44,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:35:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 02:35:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359083798] [2023-11-29 02:35:44,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:35:44,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:35:44,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:44,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:35:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:35:44,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 02:35:44,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:44,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:44,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 02:35:44,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:44,824 INFO L124 PetriNetUnfolderBase]: 150/499 cut-off events. [2023-11-29 02:35:44,824 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 02:35:44,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 499 events. 150/499 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2360 event pairs, 126 based on Foata normal form. 6/426 useless extension candidates. Maximal degree in co-relation 791. Up to 309 conditions per place. [2023-11-29 02:35:44,827 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 42 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-11-29 02:35:44,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 313 flow [2023-11-29 02:35:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:35:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 02:35:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 289 transitions. [2023-11-29 02:35:44,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745484400656814 [2023-11-29 02:35:44,830 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 289 transitions. [2023-11-29 02:35:44,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 289 transitions. [2023-11-29 02:35:44,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:44,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 289 transitions. [2023-11-29 02:35:44,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:44,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:44,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:44,834 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 201 flow. Second operand 7 states and 289 transitions. [2023-11-29 02:35:44,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 313 flow [2023-11-29 02:35:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:35:44,838 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 241 flow [2023-11-29 02:35:44,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-29 02:35:44,839 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-29 02:35:44,839 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 241 flow [2023-11-29 02:35:44,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:44,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:44,840 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2023-11-29 02:35:44,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:35:45,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:45,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:45,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 519157553, now seen corresponding path program 1 times [2023-11-29 02:35:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628710599] [2023-11-29 02:35:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:45,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881037298] [2023-11-29 02:35:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:45,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:45,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:45,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:45,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:35:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:45,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:35:45,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:45,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:35:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:45,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628710599] [2023-11-29 02:35:45,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881037298] [2023-11-29 02:35:45,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881037298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:35:45,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:35:45,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 02:35:45,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720481691] [2023-11-29 02:35:45,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:35:45,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:35:45,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:45,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:35:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:35:45,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 02:35:45,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 241 flow. Second operand has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:45,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:45,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 02:35:45,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:46,327 INFO L124 PetriNetUnfolderBase]: 152/511 cut-off events. [2023-11-29 02:35:46,327 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-29 02:35:46,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 511 events. 152/511 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2443 event pairs, 126 based on Foata normal form. 4/436 useless extension candidates. Maximal degree in co-relation 832. Up to 309 conditions per place. [2023-11-29 02:35:46,341 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 40 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2023-11-29 02:35:46,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 375 flow [2023-11-29 02:35:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:35:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 02:35:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 427 transitions. [2023-11-29 02:35:46,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44618599791013586 [2023-11-29 02:35:46,344 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 427 transitions. [2023-11-29 02:35:46,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 427 transitions. [2023-11-29 02:35:46,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:46,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 427 transitions. [2023-11-29 02:35:46,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:46,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:46,348 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:46,348 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 241 flow. Second operand 11 states and 427 transitions. [2023-11-29 02:35:46,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 375 flow [2023-11-29 02:35:46,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 363 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 02:35:46,352 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 280 flow [2023-11-29 02:35:46,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=280, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2023-11-29 02:35:46,353 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2023-11-29 02:35:46,353 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 280 flow [2023-11-29 02:35:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:46,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:46,354 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-29 02:35:46,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:35:46,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:35:46,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:46,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 694220307, now seen corresponding path program 2 times [2023-11-29 02:35:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940529717] [2023-11-29 02:35:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:46,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:46,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:46,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927040770] [2023-11-29 02:35:46,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:35:46,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:46,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:46,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:46,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:35:46,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:35:46,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:35:46,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:35:46,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:35:46,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:46,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940529717] [2023-11-29 02:35:46,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927040770] [2023-11-29 02:35:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927040770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:46,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:46,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:35:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79054672] [2023-11-29 02:35:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:46,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:35:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:35:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:35:46,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:46,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:46,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:46,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:46,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:47,133 INFO L124 PetriNetUnfolderBase]: 152/509 cut-off events. [2023-11-29 02:35:47,133 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-29 02:35:47,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 509 events. 152/509 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2427 event pairs, 126 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 886. Up to 302 conditions per place. [2023-11-29 02:35:47,137 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-29 02:35:47,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 374 flow [2023-11-29 02:35:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:35:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:35:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 02:35:47,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-29 02:35:47,139 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 02:35:47,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 02:35:47,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:47,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 02:35:47,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:47,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:47,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:47,141 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 280 flow. Second operand 4 states and 181 transitions. [2023-11-29 02:35:47,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 374 flow [2023-11-29 02:35:47,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 334 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-29 02:35:47,145 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 250 flow [2023-11-29 02:35:47,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-29 02:35:47,146 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-29 02:35:47,146 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 250 flow [2023-11-29 02:35:47,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:47,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:47,147 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 02:35:47,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:35:47,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:47,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:47,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:47,348 INFO L85 PathProgramCache]: Analyzing trace with hash 45993659, now seen corresponding path program 1 times [2023-11-29 02:35:47,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:47,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320922432] [2023-11-29 02:35:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:47,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:47,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170943555] [2023-11-29 02:35:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:47,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:47,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:47,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:47,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:35:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:47,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:35:47,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:47,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:35:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:47,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:47,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320922432] [2023-11-29 02:35:47,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:47,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170943555] [2023-11-29 02:35:47,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170943555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:35:47,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:35:47,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 02:35:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033858750] [2023-11-29 02:35:47,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:35:47,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:35:47,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:35:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:35:47,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 02:35:47,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:47,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:47,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 02:35:47,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:48,696 INFO L124 PetriNetUnfolderBase]: 150/543 cut-off events. [2023-11-29 02:35:48,696 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-29 02:35:48,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 543 events. 150/543 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2490 event pairs, 126 based on Foata normal form. 8/474 useless extension candidates. Maximal degree in co-relation 852. Up to 309 conditions per place. [2023-11-29 02:35:48,699 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 45 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-11-29 02:35:48,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 429 flow [2023-11-29 02:35:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:35:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 02:35:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 573 transitions. [2023-11-29 02:35:48,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43908045977011495 [2023-11-29 02:35:48,702 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 573 transitions. [2023-11-29 02:35:48,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 573 transitions. [2023-11-29 02:35:48,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:48,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 573 transitions. [2023-11-29 02:35:48,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.2) internal successors, (573), 15 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:48,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:48,708 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:48,709 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 250 flow. Second operand 15 states and 573 transitions. [2023-11-29 02:35:48,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 429 flow [2023-11-29 02:35:48,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 408 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 02:35:48,713 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 316 flow [2023-11-29 02:35:48,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=316, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2023-11-29 02:35:48,713 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2023-11-29 02:35:48,714 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 316 flow [2023-11-29 02:35:48,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:48,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:48,715 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-29 02:35:48,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:35:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:48,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:48,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -734420293, now seen corresponding path program 2 times [2023-11-29 02:35:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097988887] [2023-11-29 02:35:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:49,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:49,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320852114] [2023-11-29 02:35:49,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:35:49,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:49,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:49,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:35:49,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:35:49,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:35:49,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:35:49,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 02:35:49,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:49,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:49,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097988887] [2023-11-29 02:35:49,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:49,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320852114] [2023-11-29 02:35:49,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320852114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:49,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:49,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:35:49,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809102178] [2023-11-29 02:35:49,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:49,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:35:49,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:49,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:35:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:35:49,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:49,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:49,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:49,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:49,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:49,646 INFO L124 PetriNetUnfolderBase]: 150/542 cut-off events. [2023-11-29 02:35:49,646 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-29 02:35:49,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 542 events. 150/542 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2482 event pairs, 126 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 874. Up to 321 conditions per place. [2023-11-29 02:35:49,650 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-11-29 02:35:49,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 579 flow [2023-11-29 02:35:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:35:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:35:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2023-11-29 02:35:49,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2023-11-29 02:35:49,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 186 transitions. [2023-11-29 02:35:49,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 186 transitions. [2023-11-29 02:35:49,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:49,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 186 transitions. [2023-11-29 02:35:49,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:49,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:49,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:49,654 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 316 flow. Second operand 4 states and 186 transitions. [2023-11-29 02:35:49,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 579 flow [2023-11-29 02:35:49,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 555 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 02:35:49,658 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 328 flow [2023-11-29 02:35:49,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2023-11-29 02:35:49,659 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2023-11-29 02:35:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 328 flow [2023-11-29 02:35:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:49,660 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:35:49,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:35:49,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:49,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:49,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1168407891, now seen corresponding path program 1 times [2023-11-29 02:35:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:49,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201186163] [2023-11-29 02:35:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:49,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:49,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036421403] [2023-11-29 02:35:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:49,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:49,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:49,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:49,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:35:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:50,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:35:50,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:50,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:35:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201186163] [2023-11-29 02:35:50,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:50,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036421403] [2023-11-29 02:35:50,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036421403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:35:50,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:35:50,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 02:35:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766778384] [2023-11-29 02:35:50,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:35:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 02:35:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 02:35:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-29 02:35:50,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 02:35:50,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 328 flow. Second operand has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:50,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:50,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 02:35:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:52,950 INFO L124 PetriNetUnfolderBase]: 150/638 cut-off events. [2023-11-29 02:35:52,950 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-29 02:35:52,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 638 events. 150/638 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2524 event pairs, 126 based on Foata normal form. 16/577 useless extension candidates. Maximal degree in co-relation 1119. Up to 309 conditions per place. [2023-11-29 02:35:52,952 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 54 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2023-11-29 02:35:52,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 748 flow [2023-11-29 02:35:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:35:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 02:35:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1145 transitions. [2023-11-29 02:35:52,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42454579162031886 [2023-11-29 02:35:52,958 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1145 transitions. [2023-11-29 02:35:52,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1145 transitions. [2023-11-29 02:35:52,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:52,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1145 transitions. [2023-11-29 02:35:52,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 36.935483870967744) internal successors, (1145), 31 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:52,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:52,966 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:52,966 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 328 flow. Second operand 31 states and 1145 transitions. [2023-11-29 02:35:52,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 748 flow [2023-11-29 02:35:52,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 118 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:35:52,971 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 589 flow [2023-11-29 02:35:52,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=589, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2023-11-29 02:35:52,972 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2023-11-29 02:35:52,972 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 589 flow [2023-11-29 02:35:52,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:52,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:52,973 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:35:52,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:35:53,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:35:53,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:53,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -842868051, now seen corresponding path program 2 times [2023-11-29 02:35:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:53,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843210110] [2023-11-29 02:35:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:53,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:53,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796585130] [2023-11-29 02:35:53,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:35:53,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:53,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:53,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:53,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:35:53,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:35:53,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:35:53,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:35:53,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-11-29 02:35:53,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:53,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843210110] [2023-11-29 02:35:53,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796585130] [2023-11-29 02:35:53,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796585130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:53,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:53,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:35:53,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728978339] [2023-11-29 02:35:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:53,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:35:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:35:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:35:53,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:35:53,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:53,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:53,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:35:53,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:35:54,257 INFO L124 PetriNetUnfolderBase]: 171/642 cut-off events. [2023-11-29 02:35:54,257 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-11-29 02:35:54,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 642 events. 171/642 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2688 event pairs, 41 based on Foata normal form. 22/568 useless extension candidates. Maximal degree in co-relation 1208. Up to 208 conditions per place. [2023-11-29 02:35:54,261 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 112 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2023-11-29 02:35:54,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 152 transitions, 911 flow [2023-11-29 02:35:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:35:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:35:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-11-29 02:35:54,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6522988505747126 [2023-11-29 02:35:54,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-11-29 02:35:54,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-11-29 02:35:54,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:35:54,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-11-29 02:35:54,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:54,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:54,266 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:54,266 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 589 flow. Second operand 4 states and 227 transitions. [2023-11-29 02:35:54,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 152 transitions, 911 flow [2023-11-29 02:35:54,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 152 transitions, 885 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-29 02:35:54,276 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 569 flow [2023-11-29 02:35:54,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2023-11-29 02:35:54,277 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-11-29 02:35:54,277 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 569 flow [2023-11-29 02:35:54,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:54,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:35:54,278 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:35:54,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:35:54,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:35:54,478 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:35:54,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -359105192, now seen corresponding path program 1 times [2023-11-29 02:35:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:54,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596217371] [2023-11-29 02:35:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:54,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117686035] [2023-11-29 02:35:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:54,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:54,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:54,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:54,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:35:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:35:55,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 02:35:55,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:55,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:35:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:35:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596217371] [2023-11-29 02:35:56,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117686035] [2023-11-29 02:35:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117686035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:35:56,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:35:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-29 02:35:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342556343] [2023-11-29 02:35:56,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:35:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 02:35:56,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:56,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 02:35:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 02:35:56,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 02:35:56,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 569 flow. Second operand has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:35:56,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:35:56,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 02:35:56,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:36:01,037 INFO L124 PetriNetUnfolderBase]: 150/817 cut-off events. [2023-11-29 02:36:01,037 INFO L125 PetriNetUnfolderBase]: For 3485/3485 co-relation queries the response was YES. [2023-11-29 02:36:01,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 817 events. 150/817 cut-off events. For 3485/3485 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2629 event pairs, 126 based on Foata normal form. 30/793 useless extension candidates. Maximal degree in co-relation 1679. Up to 309 conditions per place. [2023-11-29 02:36:01,043 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 69 selfloop transitions, 61 changer transitions 0/162 dead transitions. [2023-11-29 02:36:01,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 162 transitions, 1516 flow [2023-11-29 02:36:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 02:36:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 02:36:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2217 transitions. [2023-11-29 02:36:01,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177501413227812 [2023-11-29 02:36:01,050 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 2217 transitions. [2023-11-29 02:36:01,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 2217 transitions. [2023-11-29 02:36:01,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:36:01,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 2217 transitions. [2023-11-29 02:36:01,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 36.34426229508197) internal successors, (2217), 61 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:01,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:01,068 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:01,068 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 569 flow. Second operand 61 states and 2217 transitions. [2023-11-29 02:36:01,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 162 transitions, 1516 flow [2023-11-29 02:36:01,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 162 transitions, 1508 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:36:01,082 INFO L231 Difference]: Finished difference. Result has 203 places, 137 transitions, 1141 flow [2023-11-29 02:36:01,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1141, PETRI_PLACES=203, PETRI_TRANSITIONS=137} [2023-11-29 02:36:01,083 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 129 predicate places. [2023-11-29 02:36:01,083 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 137 transitions, 1141 flow [2023-11-29 02:36:01,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:01,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:36:01,085 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:36:01,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 02:36:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:36:01,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:36:01,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:01,288 INFO L85 PathProgramCache]: Analyzing trace with hash 465519720, now seen corresponding path program 2 times [2023-11-29 02:36:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:01,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589246790] [2023-11-29 02:36:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:01,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:36:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97044492] [2023-11-29 02:36:01,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:36:01,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:01,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:01,722 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:36:02,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:36:02,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:36:02,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:36:02,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2023-11-29 02:36:02,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589246790] [2023-11-29 02:36:02,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:36:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97044492] [2023-11-29 02:36:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97044492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:02,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:36:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811242328] [2023-11-29 02:36:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:36:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:36:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:36:02,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:36:02,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 137 transitions, 1141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:02,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:36:02,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:36:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:36:03,098 INFO L124 PetriNetUnfolderBase]: 144/735 cut-off events. [2023-11-29 02:36:03,098 INFO L125 PetriNetUnfolderBase]: For 3349/3349 co-relation queries the response was YES. [2023-11-29 02:36:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 735 events. 144/735 cut-off events. For 3349/3349 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2217 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1712. Up to 355 conditions per place. [2023-11-29 02:36:03,120 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 3 changer transitions 0/183 dead transitions. [2023-11-29 02:36:03,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 183 transitions, 1525 flow [2023-11-29 02:36:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:36:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:36:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-29 02:36:03,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2023-11-29 02:36:03,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-29 02:36:03,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-29 02:36:03,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:36:03,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-29 02:36:03,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:03,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:03,124 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:03,125 INFO L175 Difference]: Start difference. First operand has 203 places, 137 transitions, 1141 flow. Second operand 4 states and 228 transitions. [2023-11-29 02:36:03,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 183 transitions, 1525 flow [2023-11-29 02:36:03,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 1467 flow, removed 1 selfloop flow, removed 28 redundant places. [2023-11-29 02:36:03,147 INFO L231 Difference]: Finished difference. Result has 178 places, 136 transitions, 1091 flow [2023-11-29 02:36:03,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1091, PETRI_PLACES=178, PETRI_TRANSITIONS=136} [2023-11-29 02:36:03,148 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 104 predicate places. [2023-11-29 02:36:03,148 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 136 transitions, 1091 flow [2023-11-29 02:36:03,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:03,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:36:03,149 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 02:36:03,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:36:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:36:03,349 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:36:03,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash -881692283, now seen corresponding path program 1 times [2023-11-29 02:36:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268635030] [2023-11-29 02:36:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:03,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:36:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437909496] [2023-11-29 02:36:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:03,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:03,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:03,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:36:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:08,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:36:08,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 02:36:08,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:08,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:08,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268635030] [2023-11-29 02:36:08,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:36:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437909496] [2023-11-29 02:36:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437909496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:08,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957881737] [2023-11-29 02:36:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:08,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:36:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:36:08,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:36:08,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 02:36:08,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 136 transitions, 1091 flow. Second operand has 9 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:08,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:36:08,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 02:36:08,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:36:08,967 INFO L124 PetriNetUnfolderBase]: 150/779 cut-off events. [2023-11-29 02:36:08,967 INFO L125 PetriNetUnfolderBase]: For 3195/3195 co-relation queries the response was YES. [2023-11-29 02:36:08,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 779 events. 150/779 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2406 event pairs, 126 based on Foata normal form. 29/754 useless extension candidates. Maximal degree in co-relation 1710. Up to 299 conditions per place. [2023-11-29 02:36:08,973 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 102 selfloop transitions, 73 changer transitions 0/203 dead transitions. [2023-11-29 02:36:08,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 203 transitions, 2241 flow [2023-11-29 02:36:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:36:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 02:36:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 382 transitions. [2023-11-29 02:36:08,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991640543364681 [2023-11-29 02:36:08,974 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 382 transitions. [2023-11-29 02:36:08,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 382 transitions. [2023-11-29 02:36:08,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:36:08,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 382 transitions. [2023-11-29 02:36:08,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:08,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:08,977 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:08,977 INFO L175 Difference]: Start difference. First operand has 178 places, 136 transitions, 1091 flow. Second operand 11 states and 382 transitions. [2023-11-29 02:36:08,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 203 transitions, 2241 flow [2023-11-29 02:36:09,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 203 transitions, 2235 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:36:09,007 INFO L231 Difference]: Finished difference. Result has 190 places, 202 transitions, 2299 flow [2023-11-29 02:36:09,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=190, PETRI_TRANSITIONS=202} [2023-11-29 02:36:09,008 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 116 predicate places. [2023-11-29 02:36:09,008 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 202 transitions, 2299 flow [2023-11-29 02:36:09,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:09,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:36:09,009 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:36:09,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:36:09,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:36:09,209 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:36:09,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 687872000, now seen corresponding path program 1 times [2023-11-29 02:36:09,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485603372] [2023-11-29 02:36:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:09,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:09,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:36:09,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618503465] [2023-11-29 02:36:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:09,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:09,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:09,703 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:09,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:36:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:11,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:36:11,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-29 02:36:11,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:36:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-29 02:36:11,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:11,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485603372] [2023-11-29 02:36:11,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:36:11,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618503465] [2023-11-29 02:36:11,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618503465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:36:11,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:36:11,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 02:36:11,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783022912] [2023-11-29 02:36:11,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:36:11,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:36:11,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:36:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:36:11,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:36:11,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 202 transitions, 2299 flow. Second operand has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:11,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:36:11,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:36:11,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:36:12,273 INFO L124 PetriNetUnfolderBase]: 151/964 cut-off events. [2023-11-29 02:36:12,273 INFO L125 PetriNetUnfolderBase]: For 6735/6735 co-relation queries the response was YES. [2023-11-29 02:36:12,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 964 events. 151/964 cut-off events. For 6735/6735 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2156 event pairs, 126 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2867. Up to 300 conditions per place. [2023-11-29 02:36:12,278 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 218 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2023-11-29 02:36:12,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 266 transitions, 3811 flow [2023-11-29 02:36:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:36:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 02:36:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2023-11-29 02:36:12,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909688013136289 [2023-11-29 02:36:12,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 299 transitions. [2023-11-29 02:36:12,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 299 transitions. [2023-11-29 02:36:12,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:36:12,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 299 transitions. [2023-11-29 02:36:12,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:12,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:12,281 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:12,281 INFO L175 Difference]: Start difference. First operand has 190 places, 202 transitions, 2299 flow. Second operand 7 states and 299 transitions. [2023-11-29 02:36:12,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 266 transitions, 3811 flow [2023-11-29 02:36:12,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 266 transitions, 3793 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 02:36:12,315 INFO L231 Difference]: Finished difference. Result has 196 places, 205 transitions, 2399 flow [2023-11-29 02:36:12,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2399, PETRI_PLACES=196, PETRI_TRANSITIONS=205} [2023-11-29 02:36:12,316 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 122 predicate places. [2023-11-29 02:36:12,316 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 205 transitions, 2399 flow [2023-11-29 02:36:12,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:12,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:36:12,316 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 02:36:12,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 02:36:12,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:36:12,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:36:12,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1562656365, now seen corresponding path program 1 times [2023-11-29 02:36:12,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:12,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400804528] [2023-11-29 02:36:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:13,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:36:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979980909] [2023-11-29 02:36:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:13,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:13,009 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:13,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:36:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:15,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 02:36:15,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 02:36:15,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:36:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 02:36:16,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400804528] [2023-11-29 02:36:16,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:36:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979980909] [2023-11-29 02:36:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979980909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:36:16,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:36:16,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 02:36:16,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364885921] [2023-11-29 02:36:16,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:36:16,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:36:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:36:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:36:16,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 02:36:16,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 205 transitions, 2399 flow. Second operand has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:16,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:36:16,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 02:36:16,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:36:17,822 INFO L124 PetriNetUnfolderBase]: 151/933 cut-off events. [2023-11-29 02:36:17,822 INFO L125 PetriNetUnfolderBase]: For 6901/6901 co-relation queries the response was YES. [2023-11-29 02:36:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 933 events. 151/933 cut-off events. For 6901/6901 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2126 event pairs, 126 based on Foata normal form. 31/910 useless extension candidates. Maximal degree in co-relation 2903. Up to 299 conditions per place. [2023-11-29 02:36:17,828 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 111 selfloop transitions, 136 changer transitions 0/275 dead transitions. [2023-11-29 02:36:17,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 275 transitions, 3987 flow [2023-11-29 02:36:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 02:36:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 02:36:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 638 transitions. [2023-11-29 02:36:17,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2023-11-29 02:36:17,829 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 638 transitions. [2023-11-29 02:36:17,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 638 transitions. [2023-11-29 02:36:17,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:36:17,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 638 transitions. [2023-11-29 02:36:17,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:17,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:17,833 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:17,833 INFO L175 Difference]: Start difference. First operand has 196 places, 205 transitions, 2399 flow. Second operand 19 states and 638 transitions. [2023-11-29 02:36:17,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 275 transitions, 3987 flow [2023-11-29 02:36:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 275 transitions, 3979 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 02:36:17,873 INFO L231 Difference]: Finished difference. Result has 213 places, 271 transitions, 3879 flow [2023-11-29 02:36:17,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3879, PETRI_PLACES=213, PETRI_TRANSITIONS=271} [2023-11-29 02:36:17,874 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 139 predicate places. [2023-11-29 02:36:17,874 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 271 transitions, 3879 flow [2023-11-29 02:36:17,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:17,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:36:17,875 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 3, 2, 2, 2, 1, 1] [2023-11-29 02:36:17,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:36:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:36:18,075 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:36:18,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1956966879, now seen corresponding path program 2 times [2023-11-29 02:36:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574782412] [2023-11-29 02:36:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:18,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:36:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865333170] [2023-11-29 02:36:18,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:36:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:18,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:18,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:36:47,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:36:47,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:36:47,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 5791 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:36:47,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9773 backedges. 11 proven. 5352 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2023-11-29 02:36:47,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:36:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9773 backedges. 5 proven. 5358 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2023-11-29 02:36:57,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574782412] [2023-11-29 02:36:57,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:36:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865333170] [2023-11-29 02:36:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865333170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:36:57,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:36:57,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-11-29 02:36:57,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892394877] [2023-11-29 02:36:57,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:36:57,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 02:36:57,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 02:36:57,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:36:58,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 02:36:58,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 271 transitions, 3879 flow. Second operand has 24 states, 24 states have (on average 31.833333333333332) internal successors, (764), 24 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:36:58,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:36:58,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 02:36:58,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:37:05,919 INFO L124 PetriNetUnfolderBase]: 152/1059 cut-off events. [2023-11-29 02:37:05,919 INFO L125 PetriNetUnfolderBase]: For 12278/12278 co-relation queries the response was YES. [2023-11-29 02:37:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 1059 events. 152/1059 cut-off events. For 12278/12278 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2343 event pairs, 126 based on Foata normal form. 56/1061 useless extension candidates. Maximal degree in co-relation 4130. Up to 299 conditions per place. [2023-11-29 02:37:05,926 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 38 selfloop transitions, 279 changer transitions 0/345 dead transitions. [2023-11-29 02:37:05,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 345 transitions, 5869 flow [2023-11-29 02:37:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 02:37:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 02:37:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1129 transitions. [2023-11-29 02:37:05,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37077175697865355 [2023-11-29 02:37:05,927 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1129 transitions. [2023-11-29 02:37:05,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1129 transitions. [2023-11-29 02:37:05,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:37:05,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1129 transitions. [2023-11-29 02:37:05,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 32.25714285714286) internal successors, (1129), 35 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:05,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 87.0) internal successors, (3132), 36 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:05,933 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 87.0) internal successors, (3132), 36 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:05,933 INFO L175 Difference]: Start difference. First operand has 213 places, 271 transitions, 3879 flow. Second operand 35 states and 1129 transitions. [2023-11-29 02:37:05,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 345 transitions, 5869 flow [2023-11-29 02:37:05,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 345 transitions, 5659 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-11-29 02:37:05,995 INFO L231 Difference]: Finished difference. Result has 232 places, 341 transitions, 5599 flow [2023-11-29 02:37:05,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5599, PETRI_PLACES=232, PETRI_TRANSITIONS=341} [2023-11-29 02:37:05,995 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 158 predicate places. [2023-11-29 02:37:05,995 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 341 transitions, 5599 flow [2023-11-29 02:37:05,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 31.833333333333332) internal successors, (764), 24 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:05,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:37:05,996 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:37:06,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:37:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:37:06,196 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:37:06,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash -365819564, now seen corresponding path program 2 times [2023-11-29 02:37:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455241854] [2023-11-29 02:37:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:07,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:37:07,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288749908] [2023-11-29 02:37:07,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:37:07,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:37:07,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:37:07,658 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:37:07,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:37:11,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:37:11,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:37:11,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 8405 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:37:11,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:37:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20312 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6617 trivial. 0 not checked. [2023-11-29 02:37:12,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:37:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 20312 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6617 trivial. 0 not checked. [2023-11-29 02:37:12,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:37:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455241854] [2023-11-29 02:37:12,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:37:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288749908] [2023-11-29 02:37:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288749908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:37:12,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:37:12,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 02:37:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841600910] [2023-11-29 02:37:12,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:37:12,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:37:12,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:37:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:37:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:37:12,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 02:37:12,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 341 transitions, 5599 flow. Second operand has 16 states, 16 states have (on average 37.375) internal successors, (598), 16 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:12,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:37:12,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 02:37:12,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:37:14,372 INFO L124 PetriNetUnfolderBase]: 155/1525 cut-off events. [2023-11-29 02:37:14,372 INFO L125 PetriNetUnfolderBase]: For 23482/23482 co-relation queries the response was YES. [2023-11-29 02:37:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8444 conditions, 1525 events. 155/1525 cut-off events. For 23482/23482 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2100 event pairs, 126 based on Foata normal form. 4/1475 useless extension candidates. Maximal degree in co-relation 7618. Up to 336 conditions per place. [2023-11-29 02:37:14,380 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 461 selfloop transitions, 15 changer transitions 0/531 dead transitions. [2023-11-29 02:37:14,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 531 transitions, 10441 flow [2023-11-29 02:37:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:37:14,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 02:37:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 599 transitions. [2023-11-29 02:37:14,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590038314176245 [2023-11-29 02:37:14,382 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 599 transitions. [2023-11-29 02:37:14,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 599 transitions. [2023-11-29 02:37:14,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:37:14,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 599 transitions. [2023-11-29 02:37:14,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 39.93333333333333) internal successors, (599), 15 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:14,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:14,386 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:14,386 INFO L175 Difference]: Start difference. First operand has 232 places, 341 transitions, 5599 flow. Second operand 15 states and 599 transitions. [2023-11-29 02:37:14,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 531 transitions, 10441 flow [2023-11-29 02:37:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 531 transitions, 9431 flow, removed 90 selfloop flow, removed 26 redundant places. [2023-11-29 02:37:14,458 INFO L231 Difference]: Finished difference. Result has 225 places, 348 transitions, 5188 flow [2023-11-29 02:37:14,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5188, PETRI_PLACES=225, PETRI_TRANSITIONS=348} [2023-11-29 02:37:14,459 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 151 predicate places. [2023-11-29 02:37:14,459 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 348 transitions, 5188 flow [2023-11-29 02:37:14,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 37.375) internal successors, (598), 16 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:37:14,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:37:14,460 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:37:14,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:37:14,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:37:14,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 02:37:14,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash -751917572, now seen corresponding path program 3 times [2023-11-29 02:37:14,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:14,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992345848] [2023-11-29 02:37:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:14,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:17,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:37:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182760949] [2023-11-29 02:37:17,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:37:17,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:37:17,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:37:17,977 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:37:17,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b30eb6-90f0-462a-82f4-6ff0dc0c4f37/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process