./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu --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 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:09,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:09,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:56:09,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:09,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:09,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:09,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:09,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:09,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:09,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:09,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:09,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:09,333 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:09,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:09,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:09,335 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:09,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:09,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:09,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:09,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:09,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:09,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:09,338 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:56:09,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:09,339 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:09,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:09,340 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:09,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:09,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:09,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:09,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:09,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:09,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:09,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:09,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:09,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:09,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:09,345 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:09,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:09,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:09,346 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:09,346 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_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2023-11-19 07:56:09,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:09,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:09,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:09,723 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:09,724 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:09,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue_ok.i [2023-11-19 07:56:12,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:13,242 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:13,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/sv-benchmarks/c/pthread/queue_ok.i [2023-11-19 07:56:13,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/data/fc48dcf82/c059a21fac544d16a48a13802282a061/FLAG228d0b63a [2023-11-19 07:56:13,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/data/fc48dcf82/c059a21fac544d16a48a13802282a061 [2023-11-19 07:56:13,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:13,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:13,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:13,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:13,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:13,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:13" (1/1) ... [2023-11-19 07:56:13,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5cd15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:13, skipping insertion in model container [2023-11-19 07:56:13,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:13" (1/1) ... [2023-11-19 07:56:13,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:13,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:13,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:14,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:14,134 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:14,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14 WrapperNode [2023-11-19 07:56:14,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:14,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:14,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:14,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:14,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,236 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-11-19 07:56:14,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:14,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:14,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:14,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:14,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:14,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:14,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:14,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:14,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (1/1) ... [2023-11-19 07:56:14,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:14,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:14,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:56:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:56:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:56:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:56:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:14,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:56:14,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:14,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:14,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:14,410 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:56:14,638 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:14,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:15,050 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:15,064 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:15,065 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:56:15,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:15 BoogieIcfgContainer [2023-11-19 07:56:15,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:15,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:15,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:15,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:15,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:13" (1/3) ... [2023-11-19 07:56:15,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f5a8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:15, skipping insertion in model container [2023-11-19 07:56:15,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:14" (2/3) ... [2023-11-19 07:56:15,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f5a8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:15, skipping insertion in model container [2023-11-19 07:56:15,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:15" (3/3) ... [2023-11-19 07:56:15,084 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2023-11-19 07:56:15,093 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:15,106 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:15,106 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:56:15,107 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:15,259 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:56:15,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 530 flow [2023-11-19 07:56:15,490 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2023-11-19 07:56:15,490 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:56:15,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-19 07:56:15,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 530 flow [2023-11-19 07:56:15,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 246 transitions, 501 flow [2023-11-19 07:56:15,519 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:15,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-19 07:56:15,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-19 07:56:15,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 246 transitions, 501 flow [2023-11-19 07:56:15,638 INFO L124 PetriNetUnfolderBase]: 15/246 cut-off events. [2023-11-19 07:56:15,638 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:15,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 246 events. 15/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 393 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-19 07:56:15,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 15300 [2023-11-19 07:56:24,013 INFO L134 LiptonReduction]: Checked pairs total: 32311 [2023-11-19 07:56:24,013 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-11-19 07:56:24,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:24,037 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;@b24dcb3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:24,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-19 07:56:24,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:24,043 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-19 07:56:24,043 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:24,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:24,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:24,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:24,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash 665727335, now seen corresponding path program 1 times [2023-11-19 07:56:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:24,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127204458] [2023-11-19 07:56:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:24,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:25,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:25,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127204458] [2023-11-19 07:56:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127204458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:25,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:25,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502719385] [2023-11-19 07:56:25,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:25,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:25,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 499 [2023-11-19 07:56:25,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:25,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 499 [2023-11-19 07:56:25,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:26,187 INFO L124 PetriNetUnfolderBase]: 1539/2565 cut-off events. [2023-11-19 07:56:26,188 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-19 07:56:26,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5135 conditions, 2565 events. 1539/2565 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13276 event pairs, 1057 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 4915. Up to 2376 conditions per place. [2023-11-19 07:56:26,211 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 78 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2023-11-19 07:56:26,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 386 flow [2023-11-19 07:56:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1453 transitions. [2023-11-19 07:56:26,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48530394121576487 [2023-11-19 07:56:26,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1453 transitions. [2023-11-19 07:56:26,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1453 transitions. [2023-11-19 07:56:26,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:26,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1453 transitions. [2023-11-19 07:56:26,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.16666666666666) internal successors, (1453), 6 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,278 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 125 flow. Second operand 6 states and 1453 transitions. [2023-11-19 07:56:26,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 386 flow [2023-11-19 07:56:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:26,288 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 194 flow [2023-11-19 07:56:26,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-11-19 07:56:26,297 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-19 07:56:26,297 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 194 flow [2023-11-19 07:56:26,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:26,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:26,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:26,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:26,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash 665727366, now seen corresponding path program 1 times [2023-11-19 07:56:26,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:26,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723916386] [2023-11-19 07:56:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723916386] [2023-11-19 07:56:26,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723916386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:26,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:26,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:26,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681491839] [2023-11-19 07:56:26,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:26,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:26,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 499 [2023-11-19 07:56:26,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 229.4) internal successors, (1147), 5 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:26,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 499 [2023-11-19 07:56:26,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:27,278 INFO L124 PetriNetUnfolderBase]: 1538/2566 cut-off events. [2023-11-19 07:56:27,278 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-11-19 07:56:27,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5478 conditions, 2566 events. 1538/2566 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13069 event pairs, 1078 based on Foata normal form. 0/1936 useless extension candidates. Maximal degree in co-relation 3987. Up to 2493 conditions per place. [2023-11-19 07:56:27,300 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 56 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-11-19 07:56:27,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 331 flow [2023-11-19 07:56:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1432 transitions. [2023-11-19 07:56:27,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47828991315965264 [2023-11-19 07:56:27,307 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1432 transitions. [2023-11-19 07:56:27,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1432 transitions. [2023-11-19 07:56:27,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:27,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1432 transitions. [2023-11-19 07:56:27,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.66666666666666) internal successors, (1432), 6 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,325 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,325 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 194 flow. Second operand 6 states and 1432 transitions. [2023-11-19 07:56:27,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 331 flow [2023-11-19 07:56:27,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:27,331 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 216 flow [2023-11-19 07:56:27,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2023-11-19 07:56:27,332 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-11-19 07:56:27,333 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 216 flow [2023-11-19 07:56:27,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.4) internal successors, (1147), 5 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:27,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:27,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:27,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:27,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -837658764, now seen corresponding path program 1 times [2023-11-19 07:56:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:27,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468154920] [2023-11-19 07:56:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468154920] [2023-11-19 07:56:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468154920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487693504] [2023-11-19 07:56:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:28,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-19 07:56:28,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:28,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-19 07:56:28,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:28,713 INFO L124 PetriNetUnfolderBase]: 2024/3407 cut-off events. [2023-11-19 07:56:28,714 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-19 07:56:28,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 3407 events. 2024/3407 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18930 event pairs, 395 based on Foata normal form. 29/2707 useless extension candidates. Maximal degree in co-relation 6994. Up to 2565 conditions per place. [2023-11-19 07:56:28,741 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 123 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2023-11-19 07:56:28,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 147 transitions, 673 flow [2023-11-19 07:56:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-11-19 07:56:28,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49632598530394123 [2023-11-19 07:56:28,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-11-19 07:56:28,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-11-19 07:56:28,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:28,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-11-19 07:56:28,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,770 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,770 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 216 flow. Second operand 6 states and 1486 transitions. [2023-11-19 07:56:28,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 147 transitions, 673 flow [2023-11-19 07:56:28,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 658 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:28,781 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 295 flow [2023-11-19 07:56:28,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-11-19 07:56:28,783 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-11-19 07:56:28,783 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 295 flow [2023-11-19 07:56:28,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:28,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:28,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:28,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -836966844, now seen corresponding path program 2 times [2023-11-19 07:56:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500066881] [2023-11-19 07:56:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:29,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:29,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500066881] [2023-11-19 07:56:29,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500066881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:29,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:29,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:29,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254540067] [2023-11-19 07:56:29,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:29,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:29,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:29,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-19 07:56:29,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:29,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-19 07:56:29,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:30,240 INFO L124 PetriNetUnfolderBase]: 2118/3561 cut-off events. [2023-11-19 07:56:30,241 INFO L125 PetriNetUnfolderBase]: For 1120/1120 co-relation queries the response was YES. [2023-11-19 07:56:30,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8309 conditions, 3561 events. 2118/3561 cut-off events. For 1120/1120 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19940 event pairs, 421 based on Foata normal form. 29/2842 useless extension candidates. Maximal degree in co-relation 7809. Up to 2568 conditions per place. [2023-11-19 07:56:30,275 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 125 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2023-11-19 07:56:30,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 152 transitions, 759 flow [2023-11-19 07:56:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1491 transitions. [2023-11-19 07:56:30,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49799599198396793 [2023-11-19 07:56:30,282 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1491 transitions. [2023-11-19 07:56:30,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1491 transitions. [2023-11-19 07:56:30,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:30,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1491 transitions. [2023-11-19 07:56:30,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,299 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,299 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 295 flow. Second operand 6 states and 1491 transitions. [2023-11-19 07:56:30,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 152 transitions, 759 flow [2023-11-19 07:56:30,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 152 transitions, 747 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:30,317 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 375 flow [2023-11-19 07:56:30,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2023-11-19 07:56:30,320 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-19 07:56:30,320 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 375 flow [2023-11-19 07:56:30,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:30,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:30,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:30,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:30,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash 548683948, now seen corresponding path program 1 times [2023-11-19 07:56:30,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789534099] [2023-11-19 07:56:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:30,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:30,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789534099] [2023-11-19 07:56:30,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789534099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:30,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627727343] [2023-11-19 07:56:30,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:30,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 499 [2023-11-19 07:56:30,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 499 [2023-11-19 07:56:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:31,379 INFO L124 PetriNetUnfolderBase]: 3480/5805 cut-off events. [2023-11-19 07:56:31,379 INFO L125 PetriNetUnfolderBase]: For 3687/3807 co-relation queries the response was YES. [2023-11-19 07:56:31,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 5805 events. 3480/5805 cut-off events. For 3687/3807 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 35568 event pairs, 1574 based on Foata normal form. 120/4585 useless extension candidates. Maximal degree in co-relation 13156. Up to 3401 conditions per place. [2023-11-19 07:56:31,439 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 149 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2023-11-19 07:56:31,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 163 transitions, 1012 flow [2023-11-19 07:56:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1065 transitions. [2023-11-19 07:56:31,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335671342685371 [2023-11-19 07:56:31,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1065 transitions. [2023-11-19 07:56:31,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1065 transitions. [2023-11-19 07:56:31,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:31,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1065 transitions. [2023-11-19 07:56:31,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:31,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:31,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:31,456 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 375 flow. Second operand 4 states and 1065 transitions. [2023-11-19 07:56:31,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 163 transitions, 1012 flow [2023-11-19 07:56:31,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 163 transitions, 988 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:31,469 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 399 flow [2023-11-19 07:56:31,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=399, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2023-11-19 07:56:31,470 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-11-19 07:56:31,471 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 399 flow [2023-11-19 07:56:31,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:31,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:31,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:31,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:31,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:31,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1474196742, now seen corresponding path program 1 times [2023-11-19 07:56:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:31,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367434843] [2023-11-19 07:56:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:31,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367434843] [2023-11-19 07:56:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367434843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:31,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:31,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:31,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932754510] [2023-11-19 07:56:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:31,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:31,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:32,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 499 [2023-11-19 07:56:32,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:32,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:32,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 499 [2023-11-19 07:56:32,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:33,137 INFO L124 PetriNetUnfolderBase]: 3523/5957 cut-off events. [2023-11-19 07:56:33,138 INFO L125 PetriNetUnfolderBase]: For 3877/3887 co-relation queries the response was YES. [2023-11-19 07:56:33,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14890 conditions, 5957 events. 3523/5957 cut-off events. For 3877/3887 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 36585 event pairs, 2312 based on Foata normal form. 0/4876 useless extension candidates. Maximal degree in co-relation 14085. Up to 5710 conditions per place. [2023-11-19 07:56:33,189 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 76 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2023-11-19 07:56:33,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 589 flow [2023-11-19 07:56:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1437 transitions. [2023-11-19 07:56:33,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47995991983967934 [2023-11-19 07:56:33,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1437 transitions. [2023-11-19 07:56:33,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1437 transitions. [2023-11-19 07:56:33,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:33,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1437 transitions. [2023-11-19 07:56:33,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:33,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:33,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:33,272 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 399 flow. Second operand 6 states and 1437 transitions. [2023-11-19 07:56:33,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 589 flow [2023-11-19 07:56:33,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:33,289 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 437 flow [2023-11-19 07:56:33,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=437, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2023-11-19 07:56:33,290 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2023-11-19 07:56:33,291 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 437 flow [2023-11-19 07:56:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:33,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:33,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:33,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:33,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:33,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -931432884, now seen corresponding path program 1 times [2023-11-19 07:56:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875688861] [2023-11-19 07:56:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875688861] [2023-11-19 07:56:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875688861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760600060] [2023-11-19 07:56:33,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:33,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:34,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-19 07:56:34,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 437 flow. Second operand has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:34,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:34,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-19 07:56:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:35,223 INFO L124 PetriNetUnfolderBase]: 3807/6344 cut-off events. [2023-11-19 07:56:35,224 INFO L125 PetriNetUnfolderBase]: For 2523/2565 co-relation queries the response was YES. [2023-11-19 07:56:35,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16096 conditions, 6344 events. 3807/6344 cut-off events. For 2523/2565 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 38877 event pairs, 644 based on Foata normal form. 94/5496 useless extension candidates. Maximal degree in co-relation 15263. Up to 4667 conditions per place. [2023-11-19 07:56:35,297 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 142 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2023-11-19 07:56:35,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 169 transitions, 1004 flow [2023-11-19 07:56:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1490 transitions. [2023-11-19 07:56:35,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49766199064796257 [2023-11-19 07:56:35,304 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1490 transitions. [2023-11-19 07:56:35,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1490 transitions. [2023-11-19 07:56:35,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:35,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1490 transitions. [2023-11-19 07:56:35,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,319 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,319 INFO L175 Difference]: Start difference. First operand has 91 places, 87 transitions, 437 flow. Second operand 6 states and 1490 transitions. [2023-11-19 07:56:35,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 169 transitions, 1004 flow [2023-11-19 07:56:35,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 169 transitions, 988 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:35,364 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 489 flow [2023-11-19 07:56:35,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2023-11-19 07:56:35,368 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2023-11-19 07:56:35,369 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 489 flow [2023-11-19 07:56:35,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:35,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:56:35,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:35,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash -995547143, now seen corresponding path program 1 times [2023-11-19 07:56:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:35,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94908556] [2023-11-19 07:56:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:35,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:35,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94908556] [2023-11-19 07:56:35,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94908556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:35,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:35,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:35,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255091747] [2023-11-19 07:56:35,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:35,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:35,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:35,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 499 [2023-11-19 07:56:35,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:35,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 499 [2023-11-19 07:56:35,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:35,716 INFO L124 PetriNetUnfolderBase]: 697/1386 cut-off events. [2023-11-19 07:56:35,716 INFO L125 PetriNetUnfolderBase]: For 652/662 co-relation queries the response was YES. [2023-11-19 07:56:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 1386 events. 697/1386 cut-off events. For 652/662 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7781 event pairs, 435 based on Foata normal form. 68/1304 useless extension candidates. Maximal degree in co-relation 3192. Up to 785 conditions per place. [2023-11-19 07:56:35,728 INFO L140 encePairwiseOnDemand]: 495/499 looper letters, 73 selfloop transitions, 2 changer transitions 6/90 dead transitions. [2023-11-19 07:56:35,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 611 flow [2023-11-19 07:56:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-11-19 07:56:35,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210420841683366 [2023-11-19 07:56:35,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-11-19 07:56:35,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-11-19 07:56:35,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:35,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-11-19 07:56:35,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,742 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 489 flow. Second operand 3 states and 780 transitions. [2023-11-19 07:56:35,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 611 flow [2023-11-19 07:56:35,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 583 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:35,749 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 397 flow [2023-11-19 07:56:35,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2023-11-19 07:56:35,753 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2023-11-19 07:56:35,753 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 397 flow [2023-11-19 07:56:35,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:35,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:35,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:35,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:56:35,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:35,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1793280667, now seen corresponding path program 1 times [2023-11-19 07:56:35,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:35,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267708662] [2023-11-19 07:56:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:35,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:36,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:36,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267708662] [2023-11-19 07:56:36,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267708662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:36,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541024787] [2023-11-19 07:56:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:36,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:36,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:36,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:36,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-19 07:56:36,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:36,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:36,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-19 07:56:36,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:36,861 INFO L124 PetriNetUnfolderBase]: 703/1385 cut-off events. [2023-11-19 07:56:36,861 INFO L125 PetriNetUnfolderBase]: For 513/515 co-relation queries the response was YES. [2023-11-19 07:56:36,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 1385 events. 703/1385 cut-off events. For 513/515 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7723 event pairs, 423 based on Foata normal form. 14/1251 useless extension candidates. Maximal degree in co-relation 2512. Up to 797 conditions per place. [2023-11-19 07:56:36,876 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 94 selfloop transitions, 15 changer transitions 0/115 dead transitions. [2023-11-19 07:56:36,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 115 transitions, 716 flow [2023-11-19 07:56:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1446 transitions. [2023-11-19 07:56:36,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48296593186372744 [2023-11-19 07:56:36,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1446 transitions. [2023-11-19 07:56:36,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1446 transitions. [2023-11-19 07:56:36,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:36,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1446 transitions. [2023-11-19 07:56:36,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:36,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:36,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:36,917 INFO L175 Difference]: Start difference. First operand has 92 places, 79 transitions, 397 flow. Second operand 6 states and 1446 transitions. [2023-11-19 07:56:36,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 115 transitions, 716 flow [2023-11-19 07:56:36,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:36,924 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 445 flow [2023-11-19 07:56:36,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=445, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2023-11-19 07:56:36,926 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2023-11-19 07:56:36,926 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 445 flow [2023-11-19 07:56:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:36,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:36,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:36,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:56:36,930 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:36,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1549266011, now seen corresponding path program 2 times [2023-11-19 07:56:36,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:36,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126604094] [2023-11-19 07:56:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:37,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:37,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126604094] [2023-11-19 07:56:37,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126604094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:37,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:37,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:37,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274222559] [2023-11-19 07:56:37,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:37,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:37,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:37,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-19 07:56:37,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:37,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:37,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-19 07:56:37,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:37,956 INFO L124 PetriNetUnfolderBase]: 735/1445 cut-off events. [2023-11-19 07:56:37,956 INFO L125 PetriNetUnfolderBase]: For 775/777 co-relation queries the response was YES. [2023-11-19 07:56:37,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3742 conditions, 1445 events. 735/1445 cut-off events. For 775/777 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8071 event pairs, 231 based on Foata normal form. 14/1312 useless extension candidates. Maximal degree in co-relation 3338. Up to 800 conditions per place. [2023-11-19 07:56:37,970 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 97 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2023-11-19 07:56:37,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 117 transitions, 776 flow [2023-11-19 07:56:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1446 transitions. [2023-11-19 07:56:37,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48296593186372744 [2023-11-19 07:56:37,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1446 transitions. [2023-11-19 07:56:37,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1446 transitions. [2023-11-19 07:56:37,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:37,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1446 transitions. [2023-11-19 07:56:37,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:37,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:37,992 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:37,993 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 445 flow. Second operand 6 states and 1446 transitions. [2023-11-19 07:56:37,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 117 transitions, 776 flow [2023-11-19 07:56:37,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 117 transitions, 744 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:38,000 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 464 flow [2023-11-19 07:56:38,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2023-11-19 07:56:38,002 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 39 predicate places. [2023-11-19 07:56:38,002 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 464 flow [2023-11-19 07:56:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:38,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:56:38,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:38,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 635992630, now seen corresponding path program 1 times [2023-11-19 07:56:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771757551] [2023-11-19 07:56:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:38,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771757551] [2023-11-19 07:56:38,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771757551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:38,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:38,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054676510] [2023-11-19 07:56:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:38,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:38,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:38,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 499 [2023-11-19 07:56:38,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:38,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:38,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 499 [2023-11-19 07:56:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:38,336 INFO L124 PetriNetUnfolderBase]: 567/1131 cut-off events. [2023-11-19 07:56:38,336 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2023-11-19 07:56:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 1131 events. 567/1131 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5705 event pairs, 430 based on Foata normal form. 8/1022 useless extension candidates. Maximal degree in co-relation 2603. Up to 812 conditions per place. [2023-11-19 07:56:38,348 INFO L140 encePairwiseOnDemand]: 494/499 looper letters, 78 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-19 07:56:38,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 648 flow [2023-11-19 07:56:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-11-19 07:56:38,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257181028724115 [2023-11-19 07:56:38,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-11-19 07:56:38,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-11-19 07:56:38,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:38,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-11-19 07:56:38,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:38,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:38,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:38,361 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 464 flow. Second operand 3 states and 787 transitions. [2023-11-19 07:56:38,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 648 flow [2023-11-19 07:56:38,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 612 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-19 07:56:38,369 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 435 flow [2023-11-19 07:56:38,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=435, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2023-11-19 07:56:38,370 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2023-11-19 07:56:38,371 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 435 flow [2023-11-19 07:56:38,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:38,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:38,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:56:38,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:38,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219408, now seen corresponding path program 1 times [2023-11-19 07:56:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613524151] [2023-11-19 07:56:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613524151] [2023-11-19 07:56:38,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613524151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990901773] [2023-11-19 07:56:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:38,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:38,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:38,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:56:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:39,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:56:39,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:39,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:56:39,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-19 07:56:39,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-19 07:56:39,533 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-11-19 07:56:39,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2023-11-19 07:56:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:39,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:40,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:56:40,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 46 [2023-11-19 07:56:40,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:56:40,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 60 [2023-11-19 07:56:40,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-19 07:56:40,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-19 07:56:40,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:56:40,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2023-11-19 07:56:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:40,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990901773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:40,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:40,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-19 07:56:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047482641] [2023-11-19 07:56:40,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:40,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:56:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:56:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=437, Unknown=5, NotChecked=0, Total=552 [2023-11-19 07:56:41,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 499 [2023-11-19 07:56:41,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 435 flow. Second operand has 24 states, 24 states have (on average 190.625) internal successors, (4575), 24 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:41,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:41,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 499 [2023-11-19 07:56:41,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:43,157 INFO L124 PetriNetUnfolderBase]: 1063/2077 cut-off events. [2023-11-19 07:56:43,157 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2023-11-19 07:56:43,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 2077 events. 1063/2077 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 12320 event pairs, 438 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 4046. Up to 665 conditions per place. [2023-11-19 07:56:43,181 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 121 selfloop transitions, 44 changer transitions 0/171 dead transitions. [2023-11-19 07:56:43,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 171 transitions, 1071 flow [2023-11-19 07:56:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:56:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:56:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2214 transitions. [2023-11-19 07:56:43,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40335215886318093 [2023-11-19 07:56:43,192 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2214 transitions. [2023-11-19 07:56:43,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2214 transitions. [2023-11-19 07:56:43,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:43,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2214 transitions. [2023-11-19 07:56:43,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 201.27272727272728) internal successors, (2214), 11 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:43,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 499.0) internal successors, (5988), 12 states have internal predecessors, (5988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:43,216 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 499.0) internal successors, (5988), 12 states have internal predecessors, (5988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:43,216 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 435 flow. Second operand 11 states and 2214 transitions. [2023-11-19 07:56:43,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 171 transitions, 1071 flow [2023-11-19 07:56:43,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 1067 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:43,227 INFO L231 Difference]: Finished difference. Result has 106 places, 99 transitions, 646 flow [2023-11-19 07:56:43,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=646, PETRI_PLACES=106, PETRI_TRANSITIONS=99} [2023-11-19 07:56:43,228 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2023-11-19 07:56:43,228 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 99 transitions, 646 flow [2023-11-19 07:56:43,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.625) internal successors, (4575), 24 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:43,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:43,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:43,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:56:43,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:43,443 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 07:56:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219439, now seen corresponding path program 1 times [2023-11-19 07:56:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25068282] [2023-11-19 07:56:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:44,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25068282] [2023-11-19 07:56:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25068282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584004526] [2023-11-19 07:56:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:44,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:44,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:44,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:44,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dadc94-ce09-4b7b-9046-9d6ceaa2e45c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:56:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:44,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-19 07:56:44,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:44,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 21 [2023-11-19 07:56:44,466 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:56:44,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-19 07:56:44,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:44,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:44,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-11-19 07:56:44,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 58 [2023-11-19 07:56:44,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 102 [2023-11-19 07:56:45,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 198 [2023-11-19 07:56:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:45,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 380 [2023-11-19 07:56:45,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 439 treesize of output 402 [2023-11-19 07:56:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:46,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:46,409 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_325 (Array Int Int)) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49| Int) (v_ArrVal_327 Int)) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_325) |c_~#queue~0.base|))) (or (< (select .cse0 (+ 84 |c_~#queue~0.offset|)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) |c_~#queue~0.offset|) v_ArrVal_327) (+ 88 |c_~#queue~0.offset|)) 2147483647)))) is different from false [2023-11-19 07:56:46,437 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| Int)) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ 84 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (forall ((v_ArrVal_325 (Array Int Int)) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49| Int) (v_ArrVal_327 Int)) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse1 .cse2 (+ |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| 1))) |c_~#stored_elements~0.base| v_ArrVal_325) |c_~#queue~0.base|))) (or (< (select .cse0 (+ 84 |c_~#queue~0.offset|)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) |c_~#queue~0.offset|) v_ArrVal_327) (+ 88 |c_~#queue~0.offset|)) 2147483647)))) (< (select .cse1 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58|)))) is different from false [2023-11-19 07:56:46,910 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_325 (Array Int Int)) (|v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49| Int) (v_ArrVal_327 Int)) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ 84 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse1 (+ 88 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork0_enqueue_#t~post38#1| 1)) .cse2 (+ |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| 1))) |c_~#stored_elements~0.base| v_ArrVal_325) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) |c_~#queue~0.offset|) v_ArrVal_327) (+ 88 |c_~#queue~0.offset|)) 2147483647) (< (select .cse0 (+ 84 |c_~#queue~0.offset|)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) (< (select .cse1 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58|))))) is different from false [2023-11-19 07:56:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584004526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:52,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:52,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 31 [2023-11-19 07:56:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829444525] [2023-11-19 07:56:52,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-19 07:56:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-19 07:56:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=643, Unknown=32, NotChecked=174, Total=1056 [2023-11-19 07:56:53,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 499 [2023-11-19 07:56:53,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 646 flow. Second operand has 33 states, 33 states have (on average 189.36363636363637) internal successors, (6249), 33 states have internal predecessors, (6249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:53,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:53,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 499 [2023-11-19 07:56:53,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand