./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme --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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:28,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:28,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:43:28,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:28,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:28,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:28,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:28,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:28,322 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:28,323 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:28,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:28,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:28,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:28,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:28,327 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:28,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:28,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:28,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:28,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:28,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:28,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:28,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:28,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:28,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:28,333 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:43:28,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:28,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:28,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:28,336 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:28,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:28,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:28,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:28,338 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:28,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:28,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:28,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:28,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:28,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:28,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:28,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:28,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:28,343 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:28,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:28,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:28,344 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_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2023-11-26 10:43:28,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:28,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:28,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:28,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:28,747 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:28,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-11-26 10:43:31,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:32,199 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:32,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-11-26 10:43:32,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/data/192db1ee6/26484a7052ac4f50b15175f02f8efa7a/FLAG7d71d3b42 [2023-11-26 10:43:32,232 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/data/192db1ee6/26484a7052ac4f50b15175f02f8efa7a [2023-11-26 10:43:32,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:32,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:32,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:32,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:32,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:32,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:32,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11efa889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32, skipping insertion in model container [2023-11-26 10:43:32,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:32,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:32,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:32,828 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:32,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:32,953 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:32,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32 WrapperNode [2023-11-26 10:43:32,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:32,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:32,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:32,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:32,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:32,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,019 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 186 [2023-11-26 10:43:33,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:33,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:33,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:33,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:33,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,060 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2023-11-26 10:43:33,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:33,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:33,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:33,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:33,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (1/1) ... [2023-11-26 10:43:33,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:33,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:33,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:43:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:43:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:43:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:43:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:43:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:43:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:43:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:43:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:43:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:43:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:43:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:43:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:43:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:43:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:43:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:33,207 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:43:33,424 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:33,429 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:33,829 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:34,019 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:34,019 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-26 10:43:34,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:34 BoogieIcfgContainer [2023-11-26 10:43:34,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:34,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:34,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:34,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:34,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:32" (1/3) ... [2023-11-26 10:43:34,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a31c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:34, skipping insertion in model container [2023-11-26 10:43:34,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:32" (2/3) ... [2023-11-26 10:43:34,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a31c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:34, skipping insertion in model container [2023-11-26 10:43:34,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:34" (3/3) ... [2023-11-26 10:43:34,031 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-11-26 10:43:34,041 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:43:34,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:34,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 10:43:34,055 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:43:34,107 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 10:43:34,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 98 transitions, 203 flow [2023-11-26 10:43:34,214 INFO L124 PetriNetUnfolderBase]: 26/139 cut-off events. [2023-11-26 10:43:34,214 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:43:34,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 139 events. 26/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 560 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-11-26 10:43:34,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 98 transitions, 203 flow [2023-11-26 10:43:34,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 201 flow [2023-11-26 10:43:34,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:34,247 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;@1a7a3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:34,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 10:43:34,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:34,254 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 10:43:34,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:34,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:34,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:34,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:34,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash 488994255, now seen corresponding path program 1 times [2023-11-26 10:43:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631903143] [2023-11-26 10:43:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631903143] [2023-11-26 10:43:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631903143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:34,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26868491] [2023-11-26 10:43:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:34,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:34,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2023-11-26 10:43:34,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:34,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2023-11-26 10:43:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:35,277 INFO L124 PetriNetUnfolderBase]: 301/935 cut-off events. [2023-11-26 10:43:35,279 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:43:35,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 935 events. 301/935 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5824 event pairs, 0 based on Foata normal form. 201/1068 useless extension candidates. Maximal degree in co-relation 1546. Up to 592 conditions per place. [2023-11-26 10:43:35,294 INFO L140 encePairwiseOnDemand]: 76/98 looper letters, 67 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-11-26 10:43:35,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 367 flow [2023-11-26 10:43:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2023-11-26 10:43:35,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6760204081632653 [2023-11-26 10:43:35,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 265 transitions. [2023-11-26 10:43:35,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 265 transitions. [2023-11-26 10:43:35,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:35,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 265 transitions. [2023-11-26 10:43:35,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,340 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,342 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 201 flow. Second operand 4 states and 265 transitions. [2023-11-26 10:43:35,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 367 flow [2023-11-26 10:43:35,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 367 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:35,357 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 175 flow [2023-11-26 10:43:35,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-26 10:43:35,366 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-26 10:43:35,366 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 175 flow [2023-11-26 10:43:35,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:35,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:35,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:35,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:35,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:35,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash -900692168, now seen corresponding path program 1 times [2023-11-26 10:43:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:35,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57186156] [2023-11-26 10:43:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:35,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:35,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:35,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:35,490 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:35,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 10:43:35,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-26 10:43:35,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-26 10:43:35,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-26 10:43:35,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-26 10:43:35,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-26 10:43:35,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-26 10:43:35,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-26 10:43:35,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-26 10:43:35,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-26 10:43:35,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-26 10:43:35,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-26 10:43:35,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-26 10:43:35,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-26 10:43:35,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-26 10:43:35,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-26 10:43:35,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-26 10:43:35,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:43:35,506 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 10:43:35,510 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:43:35,511 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:43:35,563 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:43:35,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 143 transitions, 302 flow [2023-11-26 10:43:35,640 INFO L124 PetriNetUnfolderBase]: 45/244 cut-off events. [2023-11-26 10:43:35,641 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:43:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 244 events. 45/244 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1143 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 147. Up to 9 conditions per place. [2023-11-26 10:43:35,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 143 transitions, 302 flow [2023-11-26 10:43:35,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 143 transitions, 302 flow [2023-11-26 10:43:35,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:35,659 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;@1a7a3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:35,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 10:43:35,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:35,668 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 10:43:35,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:35,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:35,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:35,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:35,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash 625501193, now seen corresponding path program 1 times [2023-11-26 10:43:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:35,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244387177] [2023-11-26 10:43:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:35,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:35,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244387177] [2023-11-26 10:43:35,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244387177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:35,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:35,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:35,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754903001] [2023-11-26 10:43:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:35,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:35,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 143 [2023-11-26 10:43:35,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 143 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 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) [2023-11-26 10:43:35,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:35,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 143 [2023-11-26 10:43:35,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:39,754 INFO L124 PetriNetUnfolderBase]: 11986/25327 cut-off events. [2023-11-26 10:43:39,754 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-26 10:43:39,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43621 conditions, 25327 events. 11986/25327 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 246874 event pairs, 8459 based on Foata normal form. 5066/28284 useless extension candidates. Maximal degree in co-relation 21203. Up to 18158 conditions per place. [2023-11-26 10:43:40,076 INFO L140 encePairwiseOnDemand]: 113/143 looper letters, 89 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2023-11-26 10:43:40,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 152 transitions, 504 flow [2023-11-26 10:43:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-11-26 10:43:40,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555944055944056 [2023-11-26 10:43:40,080 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-11-26 10:43:40,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-11-26 10:43:40,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:40,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-11-26 10:43:40,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,086 INFO L175 Difference]: Start difference. First operand has 120 places, 143 transitions, 302 flow. Second operand 4 states and 375 transitions. [2023-11-26 10:43:40,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 152 transitions, 504 flow [2023-11-26 10:43:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 152 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:40,094 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 278 flow [2023-11-26 10:43:40,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2023-11-26 10:43:40,095 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 5 predicate places. [2023-11-26 10:43:40,096 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 278 flow [2023-11-26 10:43:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 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) [2023-11-26 10:43:40,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:40,097 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:43:40,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:40,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1041649422, now seen corresponding path program 1 times [2023-11-26 10:43:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542455158] [2023-11-26 10:43:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:40,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542455158] [2023-11-26 10:43:40,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542455158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206932306] [2023-11-26 10:43:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:40,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:40,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206932306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:40,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:40,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-26 10:43:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733103073] [2023-11-26 10:43:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:40,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:40,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:40,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:40,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:40,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 143 [2023-11-26 10:43:40,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:40,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:40,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 143 [2023-11-26 10:43:40,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:43,697 INFO L124 PetriNetUnfolderBase]: 11658/23202 cut-off events. [2023-11-26 10:43:43,697 INFO L125 PetriNetUnfolderBase]: For 636/636 co-relation queries the response was YES. [2023-11-26 10:43:43,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42364 conditions, 23202 events. 11658/23202 cut-off events. For 636/636 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 216035 event pairs, 1230 based on Foata normal form. 256/21992 useless extension candidates. Maximal degree in co-relation 20912. Up to 13553 conditions per place. [2023-11-26 10:43:43,913 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 115 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2023-11-26 10:43:43,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 636 flow [2023-11-26 10:43:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2023-11-26 10:43:43,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223776223776224 [2023-11-26 10:43:43,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 356 transitions. [2023-11-26 10:43:43,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 356 transitions. [2023-11-26 10:43:43,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:43,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 356 transitions. [2023-11-26 10:43:43,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,924 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 278 flow. Second operand 4 states and 356 transitions. [2023-11-26 10:43:43,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 636 flow [2023-11-26 10:43:43,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 180 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:43,933 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 284 flow [2023-11-26 10:43:43,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2023-11-26 10:43:43,934 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2023-11-26 10:43:43,935 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 284 flow [2023-11-26 10:43:43,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:43,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:43,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:43:43,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:43:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4468c1b-c5fb-43a4-931e-61041d060408/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:44,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:44,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2068606958, now seen corresponding path program 1 times [2023-11-26 10:43:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:44,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469935592] [2023-11-26 10:43:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:43:44,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469935592] [2023-11-26 10:43:44,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469935592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:44,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:44,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:44,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937912874] [2023-11-26 10:43:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:44,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 143 [2023-11-26 10:43:44,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:44,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 143 [2023-11-26 10:43:44,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:46,922 INFO L124 PetriNetUnfolderBase]: 10345/21326 cut-off events. [2023-11-26 10:43:46,923 INFO L125 PetriNetUnfolderBase]: For 2015/2015 co-relation queries the response was YES. [2023-11-26 10:43:46,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39193 conditions, 21326 events. 10345/21326 cut-off events. For 2015/2015 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 201294 event pairs, 480 based on Foata normal form. 256/20556 useless extension candidates. Maximal degree in co-relation 30883. Up to 14046 conditions per place. [2023-11-26 10:43:47,057 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 114 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2023-11-26 10:43:47,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 180 transitions, 642 flow [2023-11-26 10:43:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2023-11-26 10:43:47,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276223776223776 [2023-11-26 10:43:47,061 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2023-11-26 10:43:47,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2023-11-26 10:43:47,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:47,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2023-11-26 10:43:47,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,068 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 284 flow. Second operand 4 states and 359 transitions. [2023-11-26 10:43:47,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 180 transitions, 642 flow [2023-11-26 10:43:47,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 180 transitions, 630 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:43:47,079 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 288 flow [2023-11-26 10:43:47,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2023-11-26 10:43:47,081 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2023-11-26 10:43:47,081 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 288 flow [2023-11-26 10:43:47,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:47,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 10:43:47,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:43:47,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:47,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash -638550001, now seen corresponding path program 1 times [2023-11-26 10:43:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:47,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291937693] [2023-11-26 10:43:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:47,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:47,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:47,127 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:47,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-26 10:43:47,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-26 10:43:47,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-26 10:43:47,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-26 10:43:47,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-26 10:43:47,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-26 10:43:47,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-26 10:43:47,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-26 10:43:47,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-26 10:43:47,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-26 10:43:47,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-26 10:43:47,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-26 10:43:47,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-26 10:43:47,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-26 10:43:47,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-26 10:43:47,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-26 10:43:47,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-26 10:43:47,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-26 10:43:47,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-26 10:43:47,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-26 10:43:47,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-26 10:43:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:43:47,133 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 10:43:47,134 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:43:47,134 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 10:43:47,201 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 10:43:47,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 188 transitions, 403 flow [2023-11-26 10:43:47,278 INFO L124 PetriNetUnfolderBase]: 67/368 cut-off events. [2023-11-26 10:43:47,278 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 10:43:47,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 368 events. 67/368 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1833 event pairs, 1 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 259. Up to 12 conditions per place. [2023-11-26 10:43:47,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 188 transitions, 403 flow [2023-11-26 10:43:47,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 188 transitions, 403 flow [2023-11-26 10:43:47,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:47,298 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;@1a7a3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:47,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-26 10:43:47,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:47,301 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 10:43:47,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:47,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:47,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:47,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 10:43:47,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,302 INFO L85 PathProgramCache]: Analyzing trace with hash 804951856, now seen corresponding path program 1 times [2023-11-26 10:43:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688718452] [2023-11-26 10:43:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:47,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:47,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688718452] [2023-11-26 10:43:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688718452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:47,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:47,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961026621] [2023-11-26 10:43:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:47,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:47,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:47,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 188 [2023-11-26 10:43:47,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 188 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:47,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 188 [2023-11-26 10:43:47,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand