./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC --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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:39:20,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:39:21,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 00:39:21,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:39:21,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:39:21,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:39:21,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:39:21,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:39:21,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:39:21,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:39:21,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:39:21,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:39:21,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:39:21,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:39:21,090 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:39:21,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:39:21,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:39:21,091 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:39:21,092 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:39:21,093 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:39:21,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:39:21,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:39:21,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:39:21,094 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:39:21,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:39:21,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:39:21,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:39:21,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:39:21,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:39:21,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:39:21,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:39:21,097 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC 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 -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-24 00:39:21,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:39:21,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:39:21,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:39:21,501 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:39:21,502 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:39:21,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-24 00:39:24,680 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/data/369e3426f/72b9d406901f4b579f37a2a5526e64a1/FLAG4697450a5 [2024-11-24 00:39:25,155 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:39:25,156 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-24 00:39:25,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/data/369e3426f/72b9d406901f4b579f37a2a5526e64a1/FLAG4697450a5 [2024-11-24 00:39:25,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/data/369e3426f/72b9d406901f4b579f37a2a5526e64a1 [2024-11-24 00:39:25,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:39:25,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:39:25,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:39:25,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:39:25,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:39:25,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:39:25" (1/1) ... [2024-11-24 00:39:25,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf5ee0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:25, skipping insertion in model container [2024-11-24 00:39:25,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:39:25" (1/1) ... [2024-11-24 00:39:25,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:39:25,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:39:25,890 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:39:25,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:39:26,060 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:39:26,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26 WrapperNode [2024-11-24 00:39:26,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:39:26,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:39:26,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:39:26,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:39:26,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,135 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 346 [2024-11-24 00:39:26,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:39:26,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:39:26,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:39:26,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:39:26,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,182 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-24 00:39:26,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,196 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:39:26,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:39:26,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:39:26,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:39:26,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (1/1) ... [2024-11-24 00:39:26,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:39:26,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:26,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:39:26,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:39:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:39:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:39:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 00:39:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:39:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:39:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:39:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:39:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:39:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:39:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:39:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:39:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 00:39:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:39:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 00:39:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 00:39:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:39:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:39:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:39:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:39:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:39:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:39:26,301 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:39:26,521 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:39:26,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:39:27,401 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:39:27,401 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:39:28,327 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:39:28,330 INFO L312 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-24 00:39:28,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:39:28 BoogieIcfgContainer [2024-11-24 00:39:28,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:39:28,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:39:28,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:39:28,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:39:28,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:39:25" (1/3) ... [2024-11-24 00:39:28,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b48646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:39:28, skipping insertion in model container [2024-11-24 00:39:28,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:26" (2/3) ... [2024-11-24 00:39:28,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b48646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:39:28, skipping insertion in model container [2024-11-24 00:39:28,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:39:28" (3/3) ... [2024-11-24 00:39:28,345 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-24 00:39:28,367 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:39:28,370 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_71-funloop_racing.i that has 2 procedures, 126 locations, 1 initial locations, 20 loop locations, and 22 error locations. [2024-11-24 00:39:28,370 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:39:28,471 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-24 00:39:28,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2024-11-24 00:39:28,643 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2024-11-24 00:39:28,645 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 00:39:28,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 256 events. 60/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1279 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2024-11-24 00:39:28,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2024-11-24 00:39:28,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2024-11-24 00:39:28,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:39:28,701 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;@4b72c2c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:39:28,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-24 00:39:28,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:39:28,714 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 00:39:28,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:39:28,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:28,715 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:39:28,715 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:28,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash 947051, now seen corresponding path program 1 times [2024-11-24 00:39:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689512719] [2024-11-24 00:39:28,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689512719] [2024-11-24 00:39:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689512719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:29,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:29,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:39:29,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120285935] [2024-11-24 00:39:29,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:29,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:39:29,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:29,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:39:29,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:39:29,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-24 00:39:29,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:39:29,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:29,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-24 00:39:29,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:30,325 INFO L124 PetriNetUnfolderBase]: 920/2876 cut-off events. [2024-11-24 00:39:30,325 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 00:39:30,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 2876 events. 920/2876 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23446 event pairs, 760 based on Foata normal form. 512/2971 useless extension candidates. Maximal degree in co-relation 4474. Up to 1735 conditions per place. [2024-11-24 00:39:30,349 INFO L140 encePairwiseOnDemand]: 127/163 looper letters, 67 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-24 00:39:30,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 134 transitions, 415 flow [2024-11-24 00:39:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:39:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:39:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2024-11-24 00:39:30,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506134969325154 [2024-11-24 00:39:30,366 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 359 transitions. [2024-11-24 00:39:30,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 134 transitions, 415 flow [2024-11-24 00:39:30,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:39:30,377 INFO L231 Difference]: Finished difference. Result has 134 places, 134 transitions, 295 flow [2024-11-24 00:39:30,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=134, PETRI_TRANSITIONS=134} [2024-11-24 00:39:30,383 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2024-11-24 00:39:30,383 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 295 flow [2024-11-24 00:39:30,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:39:30,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:30,384 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 00:39:30,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:39:30,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:30,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1850177708, now seen corresponding path program 1 times [2024-11-24 00:39:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:30,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937890485] [2024-11-24 00:39:30,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:30,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:30,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937890485] [2024-11-24 00:39:30,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937890485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065297948] [2024-11-24 00:39:30,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:30,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:30,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:30,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:39:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:30,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:39:30,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:30,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:39:30,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065297948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:30,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:39:30,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:39:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240323424] [2024-11-24 00:39:30,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:30,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:39:30,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:30,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:39:30,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:39:30,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-24 00:39:30,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 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) [2024-11-24 00:39:30,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:30,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-24 00:39:30,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:31,532 INFO L124 PetriNetUnfolderBase]: 920/2875 cut-off events. [2024-11-24 00:39:31,533 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 00:39:31,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 2875 events. 920/2875 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23462 event pairs, 760 based on Foata normal form. 1/2459 useless extension candidates. Maximal degree in co-relation 4610. Up to 1730 conditions per place. [2024-11-24 00:39:31,556 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 63 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2024-11-24 00:39:31,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 133 transitions, 429 flow [2024-11-24 00:39:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:39:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:39:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 454 transitions. [2024-11-24 00:39:31,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46421267893660534 [2024-11-24 00:39:31,559 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 295 flow. Second operand 6 states and 454 transitions. [2024-11-24 00:39:31,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 133 transitions, 429 flow [2024-11-24 00:39:31,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:39:31,567 INFO L231 Difference]: Finished difference. Result has 137 places, 133 transitions, 301 flow [2024-11-24 00:39:31,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=133} [2024-11-24 00:39:31,569 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2024-11-24 00:39:31,569 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 133 transitions, 301 flow [2024-11-24 00:39:31,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 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) [2024-11-24 00:39:31,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:31,570 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 00:39:31,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:39:31,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 00:39:31,770 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:31,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1520933096, now seen corresponding path program 1 times [2024-11-24 00:39:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:31,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091619838] [2024-11-24 00:39:31,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:31,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:39:31,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:31,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091619838] [2024-11-24 00:39:31,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091619838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:31,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:31,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:39:31,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864555402] [2024-11-24 00:39:31,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:31,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:39:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:31,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:39:31,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:39:31,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-24 00:39:31,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 133 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-24 00:39:31,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:31,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-24 00:39:31,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:32,436 INFO L124 PetriNetUnfolderBase]: 920/2874 cut-off events. [2024-11-24 00:39:32,437 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-24 00:39:32,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 2874 events. 920/2874 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23444 event pairs, 760 based on Foata normal form. 1/2459 useless extension candidates. Maximal degree in co-relation 4606. Up to 1733 conditions per place. [2024-11-24 00:39:32,456 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 64 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-11-24 00:39:32,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 433 flow [2024-11-24 00:39:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:39:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:39:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-24 00:39:32,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296523517382413 [2024-11-24 00:39:32,458 INFO L175 Difference]: Start difference. First operand has 137 places, 133 transitions, 301 flow. Second operand 3 states and 259 transitions. [2024-11-24 00:39:32,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 433 flow [2024-11-24 00:39:32,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 411 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-24 00:39:32,465 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 283 flow [2024-11-24 00:39:32,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-11-24 00:39:32,466 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2024-11-24 00:39:32,466 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 283 flow [2024-11-24 00:39:32,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-24 00:39:32,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:32,467 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:39:32,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:39:32,467 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:32,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:32,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1329876736, now seen corresponding path program 1 times [2024-11-24 00:39:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:32,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231914176] [2024-11-24 00:39:32,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:32,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231914176] [2024-11-24 00:39:32,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231914176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890596705] [2024-11-24 00:39:32,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:32,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:32,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:32,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:39:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:32,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:39:32,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:32,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:32,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890596705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:32,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:32,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-24 00:39:32,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629827019] [2024-11-24 00:39:32,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:32,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:39:32,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:32,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:39:32,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:39:32,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-24 00:39:32,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2024-11-24 00:39:32,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:32,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-24 00:39:32,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:33,542 INFO L124 PetriNetUnfolderBase]: 920/2878 cut-off events. [2024-11-24 00:39:33,542 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-24 00:39:33,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 2878 events. 920/2878 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23433 event pairs, 760 based on Foata normal form. 2/2465 useless extension candidates. Maximal degree in co-relation 4599. Up to 1731 conditions per place. [2024-11-24 00:39:33,556 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2024-11-24 00:39:33,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 440 flow [2024-11-24 00:39:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:39:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:39:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2024-11-24 00:39:33,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4566170026292726 [2024-11-24 00:39:33,560 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 283 flow. Second operand 7 states and 521 transitions. [2024-11-24 00:39:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 440 flow [2024-11-24 00:39:33,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:39:33,566 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 309 flow [2024-11-24 00:39:33,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-11-24 00:39:33,567 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2024-11-24 00:39:33,570 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 309 flow [2024-11-24 00:39:33,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2024-11-24 00:39:33,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:33,571 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-24 00:39:33,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:39:33,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:33,772 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:33,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1901415328, now seen corresponding path program 2 times [2024-11-24 00:39:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491730281] [2024-11-24 00:39:33,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:39:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:33,799 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:39:33,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:39:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:39:33,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491730281] [2024-11-24 00:39:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491730281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:33,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:33,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:39:33,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667359933] [2024-11-24 00:39:33,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:33,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:39:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:33,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:39:33,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:39:33,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 163 [2024-11-24 00:39:33,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-11-24 00:39:33,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:33,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 163 [2024-11-24 00:39:33,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:34,438 INFO L124 PetriNetUnfolderBase]: 885/2495 cut-off events. [2024-11-24 00:39:34,438 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-24 00:39:34,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2495 events. 885/2495 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 19401 event pairs, 0 based on Foata normal form. 21/2222 useless extension candidates. Maximal degree in co-relation 4173. Up to 1627 conditions per place. [2024-11-24 00:39:34,454 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 112 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2024-11-24 00:39:34,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 176 transitions, 621 flow [2024-11-24 00:39:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:39:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:39:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-11-24 00:39:34,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5598159509202454 [2024-11-24 00:39:34,458 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 309 flow. Second operand 4 states and 365 transitions. [2024-11-24 00:39:34,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 176 transitions, 621 flow [2024-11-24 00:39:34,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 617 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:39:34,467 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 311 flow [2024-11-24 00:39:34,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-11-24 00:39:34,471 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2024-11-24 00:39:34,471 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 311 flow [2024-11-24 00:39:34,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-11-24 00:39:34,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:34,471 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:39:34,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:39:34,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:34,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1260692227, now seen corresponding path program 1 times [2024-11-24 00:39:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:34,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235246960] [2024-11-24 00:39:34,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:34,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:34,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235246960] [2024-11-24 00:39:34,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235246960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520657397] [2024-11-24 00:39:34,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:34,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:34,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:34,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:39:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:34,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:39:34,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:34,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520657397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:35,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-24 00:39:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816513346] [2024-11-24 00:39:35,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:35,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:39:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:35,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:39:35,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:39:35,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-24 00:39:35,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 311 flow. Second operand has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 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) [2024-11-24 00:39:35,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:35,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-24 00:39:35,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:36,096 INFO L124 PetriNetUnfolderBase]: 908/2814 cut-off events. [2024-11-24 00:39:36,096 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-24 00:39:36,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2814 events. 908/2814 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22599 event pairs, 760 based on Foata normal form. 4/2444 useless extension candidates. Maximal degree in co-relation 4523. Up to 1684 conditions per place. [2024-11-24 00:39:36,118 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2024-11-24 00:39:36,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 517 flow [2024-11-24 00:39:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:39:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 00:39:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1043 transitions. [2024-11-24 00:39:36,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4265848670756646 [2024-11-24 00:39:36,129 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 311 flow. Second operand 15 states and 1043 transitions. [2024-11-24 00:39:36,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 517 flow [2024-11-24 00:39:36,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 511 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:39:36,137 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 402 flow [2024-11-24 00:39:36,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=402, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2024-11-24 00:39:36,140 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2024-11-24 00:39:36,141 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 402 flow [2024-11-24 00:39:36,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 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) [2024-11-24 00:39:36,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:36,143 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:39:36,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:39:36,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:36,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:36,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash 342965315, now seen corresponding path program 2 times [2024-11-24 00:39:36,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310507164] [2024-11-24 00:39:36,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:39:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:36,416 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:39:36,416 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:39:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310507164] [2024-11-24 00:39:36,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310507164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720830097] [2024-11-24 00:39:36,997 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:39:36,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:36,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:37,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:37,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:39:37,148 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:39:37,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:39:37,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:39:37,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:37,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720830097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:37,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-24 00:39:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841152061] [2024-11-24 00:39:37,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:37,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 00:39:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:37,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 00:39:37,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:39:37,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-24 00:39:37,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 402 flow. Second operand has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 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) [2024-11-24 00:39:37,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:37,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-24 00:39:37,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:38,565 INFO L124 PetriNetUnfolderBase]: 908/2823 cut-off events. [2024-11-24 00:39:38,566 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-24 00:39:38,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 2823 events. 908/2823 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22593 event pairs, 760 based on Foata normal form. 3/2452 useless extension candidates. Maximal degree in co-relation 4504. Up to 1684 conditions per place. [2024-11-24 00:39:38,594 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-11-24 00:39:38,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 626 flow [2024-11-24 00:39:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:39:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-24 00:39:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1432 transitions. [2024-11-24 00:39:38,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41834647969617295 [2024-11-24 00:39:38,602 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 402 flow. Second operand 21 states and 1432 transitions. [2024-11-24 00:39:38,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 626 flow [2024-11-24 00:39:38,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 616 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-24 00:39:38,609 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 503 flow [2024-11-24 00:39:38,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=503, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2024-11-24 00:39:38,610 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2024-11-24 00:39:38,610 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 503 flow [2024-11-24 00:39:38,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 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) [2024-11-24 00:39:38,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:38,612 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:39:38,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:39:38,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:38,813 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 00:39:38,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:38,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1581638170, now seen corresponding path program 3 times [2024-11-24 00:39:38,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:38,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382414413] [2024-11-24 00:39:38,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:39:38,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:38,903 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 00:39:38,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-24 00:39:38,904 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:39:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:39:38,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:39:38,977 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:39:38,979 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-24 00:39:38,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-24 00:39:38,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-24 00:39:38,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-24 00:39:38,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-24 00:39:38,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:39:38,990 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-24 00:39:38,993 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-24 00:39:38,994 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-24 00:39:39,064 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-24 00:39:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 215 transitions, 446 flow [2024-11-24 00:39:39,124 INFO L124 PetriNetUnfolderBase]: 97/420 cut-off events. [2024-11-24 00:39:39,124 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-24 00:39:39,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 420 events. 97/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2389 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2024-11-24 00:39:39,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 215 transitions, 446 flow [2024-11-24 00:39:39,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 215 transitions, 446 flow [2024-11-24 00:39:39,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:39:39,140 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;@4b72c2c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:39:39,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-24 00:39:39,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:39:39,143 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 00:39:39,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:39:39,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:39,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:39:39,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-24 00:39:39,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1160546, now seen corresponding path program 1 times [2024-11-24 00:39:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810477442] [2024-11-24 00:39:39,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:39,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810477442] [2024-11-24 00:39:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810477442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:39,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:39:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996695086] [2024-11-24 00:39:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:39,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:39:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:39,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:39:39,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:39:39,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-24 00:39:39,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 215 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-11-24 00:39:39,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:39,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-24 00:39:39,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:46,700 INFO L124 PetriNetUnfolderBase]: 38431/83201 cut-off events. [2024-11-24 00:39:46,700 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-24 00:39:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139047 conditions, 83201 events. 38431/83201 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 960238 event pairs, 33202 based on Foata normal form. 16614/88102 useless extension candidates. Maximal degree in co-relation 103580. Up to 55732 conditions per place. [2024-11-24 00:39:47,138 INFO L140 encePairwiseOnDemand]: 169/215 looper letters, 91 selfloop transitions, 3 changer transitions 0/177 dead transitions. [2024-11-24 00:39:47,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 177 transitions, 558 flow [2024-11-24 00:39:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:39:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:39:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-24 00:39:47,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-11-24 00:39:47,142 INFO L175 Difference]: Start difference. First operand has 170 places, 215 transitions, 446 flow. Second operand 4 states and 469 transitions. [2024-11-24 00:39:47,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 177 transitions, 558 flow [2024-11-24 00:39:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 177 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:39:47,148 INFO L231 Difference]: Finished difference. Result has 175 places, 177 transitions, 390 flow [2024-11-24 00:39:47,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=175, PETRI_TRANSITIONS=177} [2024-11-24 00:39:47,150 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 5 predicate places. [2024-11-24 00:39:47,151 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 177 transitions, 390 flow [2024-11-24 00:39:47,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-11-24 00:39:47,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:47,152 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 00:39:47,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:39:47,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-24 00:39:47,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash 215298036, now seen corresponding path program 1 times [2024-11-24 00:39:47,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:47,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112053878] [2024-11-24 00:39:47,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:47,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112053878] [2024-11-24 00:39:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112053878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198460052] [2024-11-24 00:39:47,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:47,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:47,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:47,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:39:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:47,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:39:47,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:47,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:39:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198460052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:39:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:39:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523678238] [2024-11-24 00:39:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:47,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:39:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:47,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:39:47,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:39:47,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-24 00:39:47,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 177 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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) [2024-11-24 00:39:47,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:47,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-24 00:39:47,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:39:54,516 INFO L124 PetriNetUnfolderBase]: 38431/83200 cut-off events. [2024-11-24 00:39:54,516 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-24 00:39:54,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139057 conditions, 83200 events. 38431/83200 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 960019 event pairs, 33202 based on Foata normal form. 1/71488 useless extension candidates. Maximal degree in co-relation 139038. Up to 55727 conditions per place. [2024-11-24 00:39:55,087 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 87 selfloop transitions, 6 changer transitions 0/176 dead transitions. [2024-11-24 00:39:55,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 176 transitions, 572 flow [2024-11-24 00:39:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:39:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:39:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 592 transitions. [2024-11-24 00:39:55,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45891472868217054 [2024-11-24 00:39:55,090 INFO L175 Difference]: Start difference. First operand has 175 places, 177 transitions, 390 flow. Second operand 6 states and 592 transitions. [2024-11-24 00:39:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 176 transitions, 572 flow [2024-11-24 00:39:55,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 176 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:39:55,096 INFO L231 Difference]: Finished difference. Result has 178 places, 176 transitions, 396 flow [2024-11-24 00:39:55,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=178, PETRI_TRANSITIONS=176} [2024-11-24 00:39:55,099 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 8 predicate places. [2024-11-24 00:39:55,099 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 176 transitions, 396 flow [2024-11-24 00:39:55,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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) [2024-11-24 00:39:55,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:39:55,100 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 00:39:55,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:39:55,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:55,304 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-24 00:39:55,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1915694257, now seen corresponding path program 1 times [2024-11-24 00:39:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192898952] [2024-11-24 00:39:55,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:39:55,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:55,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192898952] [2024-11-24 00:39:55,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192898952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:55,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:55,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:39:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254263673] [2024-11-24 00:39:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:55,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:39:55,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:55,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:39:55,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:39:55,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-24 00:39:55,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 176 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-24 00:39:55,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:39:55,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-24 00:39:55,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:40:02,000 INFO L124 PetriNetUnfolderBase]: 38431/83199 cut-off events. [2024-11-24 00:40:02,001 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-24 00:40:02,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139059 conditions, 83199 events. 38431/83199 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 2458. Compared 959860 event pairs, 33202 based on Foata normal form. 1/71488 useless extension candidates. Maximal degree in co-relation 139034. Up to 55730 conditions per place. [2024-11-24 00:40:02,343 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 88 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2024-11-24 00:40:02,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 175 transitions, 576 flow [2024-11-24 00:40:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:40:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:40:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2024-11-24 00:40:02,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-11-24 00:40:02,345 INFO L175 Difference]: Start difference. First operand has 178 places, 176 transitions, 396 flow. Second operand 3 states and 340 transitions. [2024-11-24 00:40:02,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 175 transitions, 576 flow [2024-11-24 00:40:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 175 transitions, 554 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-24 00:40:02,350 INFO L231 Difference]: Finished difference. Result has 173 places, 175 transitions, 378 flow [2024-11-24 00:40:02,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=173, PETRI_TRANSITIONS=175} [2024-11-24 00:40:02,351 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2024-11-24 00:40:02,352 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 175 transitions, 378 flow [2024-11-24 00:40:02,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-24 00:40:02,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:40:02,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:40:02,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:40:02,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-24 00:40:02,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1556791817, now seen corresponding path program 1 times [2024-11-24 00:40:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:02,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992258941] [2024-11-24 00:40:02,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992258941] [2024-11-24 00:40:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992258941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74578205] [2024-11-24 00:40:02,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:02,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:02,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:02,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:40:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:02,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:40:02,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:02,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74578205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:02,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:02,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-24 00:40:02,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833789565] [2024-11-24 00:40:02,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:02,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:40:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:02,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:40:02,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:40:02,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-24 00:40:02,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 175 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 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) [2024-11-24 00:40:02,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:40:02,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-24 00:40:02,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:40:09,658 INFO L124 PetriNetUnfolderBase]: 38431/83203 cut-off events. [2024-11-24 00:40:09,658 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-24 00:40:09,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139062 conditions, 83203 events. 38431/83203 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 2458. Compared 959835 event pairs, 33202 based on Foata normal form. 2/71494 useless extension candidates. Maximal degree in co-relation 139027. Up to 55728 conditions per place. [2024-11-24 00:40:09,935 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 88 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-24 00:40:09,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 583 flow [2024-11-24 00:40:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:40:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:40:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2024-11-24 00:40:09,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4504983388704319 [2024-11-24 00:40:09,938 INFO L175 Difference]: Start difference. First operand has 173 places, 175 transitions, 378 flow. Second operand 7 states and 678 transitions. [2024-11-24 00:40:09,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 583 flow [2024-11-24 00:40:09,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 569 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:40:09,943 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 404 flow [2024-11-24 00:40:09,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-11-24 00:40:09,944 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 9 predicate places. [2024-11-24 00:40:09,944 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 404 flow [2024-11-24 00:40:09,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 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) [2024-11-24 00:40:09,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:40:09,945 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-24 00:40:09,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:40:10,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:10,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-24 00:40:10,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1598083273, now seen corresponding path program 2 times [2024-11-24 00:40:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035806360] [2024-11-24 00:40:10,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:40:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:10,160 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:40:10,161 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:40:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:40:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035806360] [2024-11-24 00:40:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035806360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:40:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:40:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:40:10,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576928003] [2024-11-24 00:40:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:40:10,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:40:10,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:10,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:40:10,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:40:10,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 215 [2024-11-24 00:40:10,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-24 00:40:10,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:40:10,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 215 [2024-11-24 00:40:10,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:40:17,582 INFO L124 PetriNetUnfolderBase]: 40160/83755 cut-off events. [2024-11-24 00:40:17,582 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-24 00:40:17,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142455 conditions, 83755 events. 40160/83755 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 2361. Compared 937578 event pairs, 17300 based on Foata normal form. 21/72438 useless extension candidates. Maximal degree in co-relation 142415. Up to 58503 conditions per place. [2024-11-24 00:40:17,974 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 140 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2024-11-24 00:40:17,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 223 transitions, 780 flow [2024-11-24 00:40:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:40:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:40:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-24 00:40:17,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-11-24 00:40:17,976 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 404 flow. Second operand 4 states and 469 transitions. [2024-11-24 00:40:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 223 transitions, 780 flow [2024-11-24 00:40:17,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 223 transitions, 776 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:40:17,982 INFO L231 Difference]: Finished difference. Result has 182 places, 180 transitions, 424 flow [2024-11-24 00:40:17,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=182, PETRI_TRANSITIONS=180} [2024-11-24 00:40:17,983 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 12 predicate places. [2024-11-24 00:40:17,983 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 180 transitions, 424 flow [2024-11-24 00:40:17,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-24 00:40:17,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:40:17,983 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:40:17,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:40:17,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-24 00:40:17,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1194579994, now seen corresponding path program 1 times [2024-11-24 00:40:17,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:17,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385893559] [2024-11-24 00:40:17,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:17,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385893559] [2024-11-24 00:40:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385893559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089355069] [2024-11-24 00:40:18,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:18,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:18,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:18,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:18,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9da919f-44e4-4f7f-a71e-ff74bc20481a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:40:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:18,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:40:18,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:18,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089355069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:18,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:18,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-24 00:40:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159697084] [2024-11-24 00:40:18,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:18,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:40:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:18,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:40:18,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:40:18,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-24 00:40:18,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 180 transitions, 424 flow. Second operand has 18 states, 18 states have (on average 84.27777777777777) internal successors, (1517), 18 states have internal predecessors, (1517), 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) [2024-11-24 00:40:18,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:40:18,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-24 00:40:18,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand