./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:43:05,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:43:05,982 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:43:05,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:43:05,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:43:06,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:43:06,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:43:06,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:43:06,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:43:06,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:43:06,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:43:06,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:43:06,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:43:06,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:43:06,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:43:06,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:43:06,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:43:06,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:43:06,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:43:06,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:43:06,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:43:06,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:43:06,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:43:06,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:43:06,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:43:06,061 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:43:06,061 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:43:06,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:43:06,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:43:06,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:43:06,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:43:06,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:43:06,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:43:06,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:43:06,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:43:06,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:43:06,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:43:06,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:43:06,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:43:06,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:43:06,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:43:06,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:43:06,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:43:06,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:43:06,070 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_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2024-11-08 18:43:06,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:43:06,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:43:06,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:43:06,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:43:06,483 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:43:06,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c Unable to find full path for "g++" [2024-11-08 18:43:08,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:43:09,135 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:43:09,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-11-08 18:43:09,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/data/f3f174a6a/a1b7107ce09d40a4b962fb32262c770b/FLAGdb100f5dd [2024-11-08 18:43:09,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/data/f3f174a6a/a1b7107ce09d40a4b962fb32262c770b [2024-11-08 18:43:09,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:43:09,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:43:09,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:43:09,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:43:09,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:43:09,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:43:09" (1/1) ... [2024-11-08 18:43:09,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa447c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:09, skipping insertion in model container [2024-11-08 18:43:09,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:43:09" (1/1) ... [2024-11-08 18:43:09,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:43:09,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:43:09,895 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:43:09,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:43:10,007 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:43:10,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10 WrapperNode [2024-11-08 18:43:10,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:43:10,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:43:10,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:43:10,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:43:10,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,131 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 334 [2024-11-08 18:43:10,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:43:10,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:43:10,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:43:10,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:43:10,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,224 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 18:43:10,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:43:10,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:43:10,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:43:10,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:43:10,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (1/1) ... [2024-11-08 18:43:10,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:43:10,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:10,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:43:10,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:43:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:43:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:43:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:43:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:43:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:43:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:43:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:43:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:43:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:43:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:43:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:43:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 18:43:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 18:43:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:43:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:43:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:43:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:43:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:43:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:43:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:43:10,400 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:43:10,582 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:43:10,585 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:43:11,372 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:43:11,373 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:43:12,179 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:43:12,180 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:43:12,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:43:12 BoogieIcfgContainer [2024-11-08 18:43:12,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:43:12,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:43:12,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:43:12,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:43:12,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:43:09" (1/3) ... [2024-11-08 18:43:12,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440050cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:43:12, skipping insertion in model container [2024-11-08 18:43:12,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:43:10" (2/3) ... [2024-11-08 18:43:12,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440050cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:43:12, skipping insertion in model container [2024-11-08 18:43:12,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:43:12" (3/3) ... [2024-11-08 18:43:12,193 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-11-08 18:43:12,218 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:43:12,218 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-08 18:43:12,218 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:43:12,426 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:43:12,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 224 flow [2024-11-08 18:43:12,565 INFO L124 PetriNetUnfolderBase]: 12/94 cut-off events. [2024-11-08 18:43:12,566 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:43:12,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 94 events. 12/94 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2024-11-08 18:43:12,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 224 flow [2024-11-08 18:43:12,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 205 flow [2024-11-08 18:43:12,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:43:12,604 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63fb26cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:43:12,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-08 18:43:12,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:43:12,613 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 18:43:12,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:43:12,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:43:12,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:43:12,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:43:12,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash 32977509, now seen corresponding path program 1 times [2024-11-08 18:43:12,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:12,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538030383] [2024-11-08 18:43:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:12,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:13,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538030383] [2024-11-08 18:43:13,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538030383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:43:13,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:43:13,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:43:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967423387] [2024-11-08 18:43:13,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:43:13,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:43:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:43:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:43:13,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2024-11-08 18:43:13,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:13,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:43:13,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2024-11-08 18:43:13,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:43:21,766 INFO L124 PetriNetUnfolderBase]: 22684/32508 cut-off events. [2024-11-08 18:43:21,767 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-08 18:43:21,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63395 conditions, 32508 events. 22684/32508 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 4552. Compared 277295 event pairs, 21798 based on Foata normal form. 2/13273 useless extension candidates. Maximal degree in co-relation 58657. Up to 29415 conditions per place. [2024-11-08 18:43:22,356 INFO L140 encePairwiseOnDemand]: 79/98 looper letters, 47 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-11-08 18:43:22,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 309 flow [2024-11-08 18:43:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:43:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:43:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-08 18:43:22,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2024-11-08 18:43:22,379 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 205 flow. Second operand 4 states and 226 transitions. [2024-11-08 18:43:22,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 309 flow [2024-11-08 18:43:22,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 296 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 18:43:22,523 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 236 flow [2024-11-08 18:43:22,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-08 18:43:22,533 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, -9 predicate places. [2024-11-08 18:43:22,534 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 236 flow [2024-11-08 18:43:22,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:22,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:43:22,535 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 18:43:22,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:43:22,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:43:22,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:22,538 INFO L85 PathProgramCache]: Analyzing trace with hash -158863386, now seen corresponding path program 1 times [2024-11-08 18:43:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26624411] [2024-11-08 18:43:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:22,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26624411] [2024-11-08 18:43:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26624411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079658464] [2024-11-08 18:43:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:22,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:22,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:43:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:23,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:43:23,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:23,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:43:23,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079658464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:43:23,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:43:23,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:43:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140062099] [2024-11-08 18:43:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:43:23,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:43:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:23,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:43:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:43:23,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2024-11-08 18:43:23,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:23,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:43:23,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2024-11-08 18:43:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:43:30,190 INFO L124 PetriNetUnfolderBase]: 22684/32506 cut-off events. [2024-11-08 18:43:30,191 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-08 18:43:30,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62773 conditions, 32506 events. 22684/32506 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4552. Compared 277306 event pairs, 21798 based on Foata normal form. 2/13271 useless extension candidates. Maximal degree in co-relation 62717. Up to 29405 conditions per place. [2024-11-08 18:43:30,678 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 40 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-08 18:43:30,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 332 flow [2024-11-08 18:43:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:43:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:43:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 294 transitions. [2024-11-08 18:43:30,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-08 18:43:30,687 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 236 flow. Second operand 6 states and 294 transitions. [2024-11-08 18:43:30,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 332 flow [2024-11-08 18:43:30,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:43:30,693 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 252 flow [2024-11-08 18:43:30,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-11-08 18:43:30,696 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2024-11-08 18:43:30,696 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 252 flow [2024-11-08 18:43:30,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:30,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:43:30,698 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 18:43:30,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:43:30,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:30,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:43:30,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -629796627, now seen corresponding path program 1 times [2024-11-08 18:43:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486164791] [2024-11-08 18:43:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:31,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:31,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486164791] [2024-11-08 18:43:31,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486164791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:31,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288519982] [2024-11-08 18:43:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:31,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:31,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:43:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:31,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:43:31,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:31,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:31,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288519982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:31,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:31,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 18:43:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666011935] [2024-11-08 18:43:31,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:31,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:43:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:43:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:43:31,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2024-11-08 18:43:31,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 41.083333333333336) internal successors, (493), 12 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:31,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:43:31,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2024-11-08 18:43:31,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:43:38,032 INFO L124 PetriNetUnfolderBase]: 22696/32548 cut-off events. [2024-11-08 18:43:38,032 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-08 18:43:38,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62885 conditions, 32548 events. 22696/32548 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 4552. Compared 277738 event pairs, 21798 based on Foata normal form. 6/13313 useless extension candidates. Maximal degree in co-relation 62719. Up to 29416 conditions per place. [2024-11-08 18:43:38,322 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 45 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-08 18:43:38,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 106 transitions, 506 flow [2024-11-08 18:43:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:43:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:43:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 476 transitions. [2024-11-08 18:43:38,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-08 18:43:38,326 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 252 flow. Second operand 10 states and 476 transitions. [2024-11-08 18:43:38,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 106 transitions, 506 flow [2024-11-08 18:43:38,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 106 transitions, 448 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-08 18:43:38,336 INFO L231 Difference]: Finished difference. Result has 94 places, 106 transitions, 392 flow [2024-11-08 18:43:38,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=392, PETRI_PLACES=94, PETRI_TRANSITIONS=106} [2024-11-08 18:43:38,338 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2024-11-08 18:43:38,339 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 106 transitions, 392 flow [2024-11-08 18:43:38,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.083333333333336) internal successors, (493), 12 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:38,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:43:38,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:38,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:43:38,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f848f5fb-2cb1-49ff-ac33-6280ef2b8491/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:38,542 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:43:38,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1620325743, now seen corresponding path program 1 times [2024-11-08 18:43:38,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:38,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077454157] [2024-11-08 18:43:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:38,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:38,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:38,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077454157] [2024-11-08 18:43:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077454157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:43:38,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:43:38,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:43:38,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843166924] [2024-11-08 18:43:38,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:43:38,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:43:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:38,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:43:38,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:43:38,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2024-11-08 18:43:38,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 106 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:38,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:43:38,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2024-11-08 18:43:38,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:43:44,762 INFO L124 PetriNetUnfolderBase]: 24426/35324 cut-off events. [2024-11-08 18:43:44,763 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-08 18:43:44,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68237 conditions, 35324 events. 24426/35324 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 4601. Compared 305385 event pairs, 23434 based on Foata normal form. 606/15635 useless extension candidates. Maximal degree in co-relation 68126. Up to 29449 conditions per place. [2024-11-08 18:43:45,328 INFO L140 encePairwiseOnDemand]: 83/98 looper letters, 113 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-11-08 18:43:45,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 152 transitions, 801 flow [2024-11-08 18:43:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:43:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:43:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2024-11-08 18:43:45,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-08 18:43:45,331 INFO L175 Difference]: Start difference. First operand has 94 places, 106 transitions, 392 flow. Second operand 5 states and 295 transitions. [2024-11-08 18:43:45,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 152 transitions, 801 flow [2024-11-08 18:43:45,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 152 transitions, 767 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 18:43:45,337 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 411 flow [2024-11-08 18:43:45,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-08 18:43:45,338 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-08 18:43:45,340 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 411 flow [2024-11-08 18:43:45,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:45,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:43:45,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:45,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:43:45,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:43:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1253885734, now seen corresponding path program 1 times [2024-11-08 18:43:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:45,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997433651] [2024-11-08 18:43:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:45,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:45,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997433651] [2024-11-08 18:43:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997433651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:43:45,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:43:45,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:43:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898692274] [2024-11-08 18:43:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:43:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:43:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:43:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:43:45,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 98 [2024-11-08 18:43:45,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:45,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:43:45,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 98 [2024-11-08 18:43:45,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:43:50,359 INFO L124 PetriNetUnfolderBase]: 21270/30836 cut-off events. [2024-11-08 18:43:50,359 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-11-08 18:43:50,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68555 conditions, 30836 events. 21270/30836 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 3975. Compared 265473 event pairs, 20396 based on Foata normal form. 0/13359 useless extension candidates. Maximal degree in co-relation 68449. Up to 27778 conditions per place. [2024-11-08 18:43:50,610 INFO L140 encePairwiseOnDemand]: 96/98 looper letters, 66 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2024-11-08 18:43:50,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 543 flow [2024-11-08 18:43:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:43:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:43:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-08 18:43:50,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-08 18:43:50,612 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 411 flow. Second operand 3 states and 176 transitions. [2024-11-08 18:43:50,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 543 flow [2024-11-08 18:43:50,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 539 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 18:43:50,618 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 407 flow [2024-11-08 18:43:50,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-11-08 18:43:50,620 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-08 18:43:50,620 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 407 flow [2024-11-08 18:43:50,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:50,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:43:50,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:50,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:43:50,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:43:50,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1253885733, now seen corresponding path program 1 times [2024-11-08 18:43:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289417960] [2024-11-08 18:43:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:50,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289417960] [2024-11-08 18:43:50,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289417960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:43:50,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:43:50,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:43:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115666771] [2024-11-08 18:43:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:43:50,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:43:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:43:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:43:50,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 98 [2024-11-08 18:43:50,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 407 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:50,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:43:50,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 98 [2024-11-08 18:43:50,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand