./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-theta/unwind3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd --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 ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:30:34,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:30:34,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:30:34,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:30:34,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:30:34,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:30:34,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:30:34,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:30:34,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:30:34,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:30:34,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:30:34,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:30:34,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:30:34,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:30:34,383 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:30:34,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:30:34,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:30:34,383 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:30:34,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:30:34,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:30:34,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:30:34,384 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:30:34,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:30:34,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:30:34,384 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:30:34,385 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:30:34,385 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:30:34,385 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:30:34,385 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:30:34,388 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:30:34,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:30:34,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:30:34,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:30:34,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:30:34,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:30:34,390 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_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd 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 -> ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe [2024-11-13 13:30:34,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:30:34,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:30:34,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:30:34,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:30:34,653 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:30:34,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-theta/unwind3-1.i Unable to find full path for "g++" [2024-11-13 13:30:36,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:30:37,043 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:30:37,043 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/sv-benchmarks/c/pthread-theta/unwind3-1.i [2024-11-13 13:30:37,064 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/data/9c6cd0353/86f68687266e4b9d91a3875b213ea9b4/FLAG8a75ee95c [2024-11-13 13:30:37,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/data/9c6cd0353/86f68687266e4b9d91a3875b213ea9b4 [2024-11-13 13:30:37,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:30:37,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:30:37,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:30:37,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:30:37,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:30:37,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:37,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b09737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37, skipping insertion in model container [2024-11-13 13:30:37,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:37,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:30:37,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:30:37,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:30:37,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:30:37,909 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:30:37,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37 WrapperNode [2024-11-13 13:30:37,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:30:37,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:30:37,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:30:37,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:30:37,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:37,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:37,979 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2024-11-13 13:30:37,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:30:37,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:30:37,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:30:37,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:30:37,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:37,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,019 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:30:38,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:30:38,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:30:38,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:30:38,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:30:38,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (1/1) ... [2024-11-13 13:30:38,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:30:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:38,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:30:38,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:30:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:30:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-13 13:30:38,114 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-13 13:30:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-13 13:30:38,114 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-13 13:30:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:30:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:30:38,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:30:38,118 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:30:38,315 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:30:38,318 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:30:38,543 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:30:38,543 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:30:38,661 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:30:38,662 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:30:38,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:38 BoogieIcfgContainer [2024-11-13 13:30:38,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:30:38,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:30:38,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:30:38,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:30:38,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:37" (1/3) ... [2024-11-13 13:30:38,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f9fbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:38, skipping insertion in model container [2024-11-13 13:30:38,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:37" (2/3) ... [2024-11-13 13:30:38,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f9fbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:38, skipping insertion in model container [2024-11-13 13:30:38,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:38" (3/3) ... [2024-11-13 13:30:38,673 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2024-11-13 13:30:38,691 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:30:38,692 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-1.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-13 13:30:38,693 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:30:38,767 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:30:38,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2024-11-13 13:30:38,880 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-13 13:30:38,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:30:38,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-13 13:30:38,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2024-11-13 13:30:38,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2024-11-13 13:30:38,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:30:38,948 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;@6574f9d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:30:38,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-13 13:30:38,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:30:38,962 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-13 13:30:38,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:30:38,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:38,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:38,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:38,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash -835753696, now seen corresponding path program 1 times [2024-11-13 13:30:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:38,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043494439] [2024-11-13 13:30:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043494439] [2024-11-13 13:30:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043494439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:39,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:39,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:39,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608865324] [2024-11-13 13:30:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:39,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:30:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:30:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:39,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-13 13:30:39,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-13 13:30:39,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:39,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-13 13:30:39,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:39,618 INFO L124 PetriNetUnfolderBase]: 106/260 cut-off events. [2024-11-13 13:30:39,619 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:30:39,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 260 events. 106/260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1134 event pairs, 13 based on Foata normal form. 29/254 useless extension candidates. Maximal degree in co-relation 419. Up to 160 conditions per place. [2024-11-13 13:30:39,628 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 28 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-13 13:30:39,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 156 flow [2024-11-13 13:30:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:30:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:30:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-13 13:30:39,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-11-13 13:30:39,654 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 5 states and 94 transitions. [2024-11-13 13:30:39,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 156 flow [2024-11-13 13:30:39,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:30:39,667 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 72 flow [2024-11-13 13:30:39,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-11-13 13:30:39,675 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-11-13 13:30:39,679 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 72 flow [2024-11-13 13:30:39,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-13 13:30:39,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:39,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:39,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:30:39,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:39,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash -835753893, now seen corresponding path program 1 times [2024-11-13 13:30:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124197319] [2024-11-13 13:30:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:39,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:39,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124197319] [2024-11-13 13:30:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124197319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:30:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144292645] [2024-11-13 13:30:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:39,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:30:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:30:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:30:39,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2024-11-13 13:30:39,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-13 13:30:39,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:39,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2024-11-13 13:30:39,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:39,883 INFO L124 PetriNetUnfolderBase]: 52/151 cut-off events. [2024-11-13 13:30:39,883 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-13 13:30:39,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 151 events. 52/151 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 619 event pairs, 30 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 228. Up to 102 conditions per place. [2024-11-13 13:30:39,886 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 17 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-13 13:30:39,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 118 flow [2024-11-13 13:30:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:30:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:30:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-13 13:30:39,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2024-11-13 13:30:39,892 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 72 flow. Second operand 3 states and 67 transitions. [2024-11-13 13:30:39,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 118 flow [2024-11-13 13:30:39,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:30:39,896 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 76 flow [2024-11-13 13:30:39,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-11-13 13:30:39,898 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-13 13:30:39,899 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 76 flow [2024-11-13 13:30:39,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-13 13:30:39,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:39,900 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:39,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:30:39,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:39,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash -138560544, now seen corresponding path program 1 times [2024-11-13 13:30:39,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580517514] [2024-11-13 13:30:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:39,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580517514] [2024-11-13 13:30:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580517514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:39,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:39,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689481179] [2024-11-13 13:30:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:39,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:30:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:30:39,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:40,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-13 13:30:40,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-13 13:30:40,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:40,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-13 13:30:40,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:40,265 INFO L124 PetriNetUnfolderBase]: 72/195 cut-off events. [2024-11-13 13:30:40,266 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-13 13:30:40,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 195 events. 72/195 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 785 event pairs, 8 based on Foata normal form. 15/196 useless extension candidates. Maximal degree in co-relation 324. Up to 70 conditions per place. [2024-11-13 13:30:40,268 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 7/49 dead transitions. [2024-11-13 13:30:40,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 210 flow [2024-11-13 13:30:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:30:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:30:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-13 13:30:40,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2024-11-13 13:30:40,271 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 5 states and 103 transitions. [2024-11-13 13:30:40,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 210 flow [2024-11-13 13:30:40,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:30:40,273 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 69 flow [2024-11-13 13:30:40,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2024-11-13 13:30:40,275 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-13 13:30:40,276 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 69 flow [2024-11-13 13:30:40,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-13 13:30:40,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:40,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:40,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:30:40,276 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:40,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash -137570521, now seen corresponding path program 1 times [2024-11-13 13:30:40,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:40,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735848364] [2024-11-13 13:30:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:40,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:40,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:40,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735848364] [2024-11-13 13:30:40,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735848364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:40,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:40,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407110248] [2024-11-13 13:30:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:40,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:40,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:40,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-11-13 13:30:40,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-13 13:30:40,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:40,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-11-13 13:30:40,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:40,560 INFO L124 PetriNetUnfolderBase]: 32/95 cut-off events. [2024-11-13 13:30:40,561 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-13 13:30:40,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 95 events. 32/95 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 297 event pairs, 16 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 187. Up to 58 conditions per place. [2024-11-13 13:30:40,563 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-13 13:30:40,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 108 flow [2024-11-13 13:30:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:30:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-11-13 13:30:40,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-13 13:30:40,566 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 69 flow. Second operand 4 states and 70 transitions. [2024-11-13 13:30:40,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 108 flow [2024-11-13 13:30:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:30:40,569 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 64 flow [2024-11-13 13:30:40,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-13 13:30:40,570 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-11-13 13:30:40,570 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 64 flow [2024-11-13 13:30:40,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-13 13:30:40,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:40,571 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:40,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:30:40,571 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:40,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -18590274, now seen corresponding path program 1 times [2024-11-13 13:30:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709685003] [2024-11-13 13:30:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:40,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709685003] [2024-11-13 13:30:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709685003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72267792] [2024-11-13 13:30:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:40,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:40,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:40,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:30:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:40,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:30:40,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:40,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:30:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72267792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:40,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:30:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:30:40,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860574247] [2024-11-13 13:30:40,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:40,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:30:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:30:40,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:30:40,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-11-13 13:30:40,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-11-13 13:30:40,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:40,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-11-13 13:30:40,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:41,055 INFO L124 PetriNetUnfolderBase]: 30/88 cut-off events. [2024-11-13 13:30:41,056 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:30:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 88 events. 30/88 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 268 event pairs, 8 based on Foata normal form. 3/84 useless extension candidates. Maximal degree in co-relation 168. Up to 48 conditions per place. [2024-11-13 13:30:41,058 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 14 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-13 13:30:41,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 107 flow [2024-11-13 13:30:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:30:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:30:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-13 13:30:41,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-13 13:30:41,062 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 5 states and 84 transitions. [2024-11-13 13:30:41,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 107 flow [2024-11-13 13:30:41,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:30:41,064 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 66 flow [2024-11-13 13:30:41,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-13 13:30:41,066 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-11-13 13:30:41,068 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 66 flow [2024-11-13 13:30:41,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-11-13 13:30:41,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:41,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:41,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:30:41,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:41,272 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:41,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash 229168775, now seen corresponding path program 1 times [2024-11-13 13:30:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654311058] [2024-11-13 13:30:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:30:41,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:41,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654311058] [2024-11-13 13:30:41,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654311058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:41,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:41,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:41,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071788141] [2024-11-13 13:30:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:41,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:41,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:41,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:41,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-13 13:30:41,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-13 13:30:41,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:41,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-13 13:30:41,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:41,522 INFO L124 PetriNetUnfolderBase]: 58/134 cut-off events. [2024-11-13 13:30:41,522 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-13 13:30:41,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 134 events. 58/134 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 451 event pairs, 38 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 280. Up to 89 conditions per place. [2024-11-13 13:30:41,525 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-11-13 13:30:41,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 130 flow [2024-11-13 13:30:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:30:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-13 13:30:41,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2024-11-13 13:30:41,531 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 66 flow. Second operand 4 states and 89 transitions. [2024-11-13 13:30:41,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 130 flow [2024-11-13 13:30:41,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 120 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 13:30:41,533 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 78 flow [2024-11-13 13:30:41,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2024-11-13 13:30:41,534 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2024-11-13 13:30:41,534 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 78 flow [2024-11-13 13:30:41,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-13 13:30:41,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:41,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:41,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:30:41,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:41,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1830759705, now seen corresponding path program 1 times [2024-11-13 13:30:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:41,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822726165] [2024-11-13 13:30:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:41,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:30:41,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:41,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822726165] [2024-11-13 13:30:41,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822726165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:41,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103329136] [2024-11-13 13:30:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:41,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:41,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:41,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:41,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:30:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:41,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:30:41,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:30:41,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:30:41,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103329136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:41,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:30:41,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 13:30:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792111218] [2024-11-13 13:30:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:41,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:30:41,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:41,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:30:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:30:41,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-13 13:30:41,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:41,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:41,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-13 13:30:41,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:41,990 INFO L124 PetriNetUnfolderBase]: 51/121 cut-off events. [2024-11-13 13:30:41,991 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-13 13:30:41,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 121 events. 51/121 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 403 event pairs, 10 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 291. Up to 31 conditions per place. [2024-11-13 13:30:41,995 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 23 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-11-13 13:30:41,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 158 flow [2024-11-13 13:30:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:30:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:30:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-13 13:30:41,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6313131313131313 [2024-11-13 13:30:41,997 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 78 flow. Second operand 6 states and 125 transitions. [2024-11-13 13:30:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 158 flow [2024-11-13 13:30:42,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:30:42,001 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 82 flow [2024-11-13 13:30:42,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2024-11-13 13:30:42,002 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-13 13:30:42,002 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 82 flow [2024-11-13 13:30:42,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:42,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:42,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:42,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:42,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:42,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:42,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash -918975740, now seen corresponding path program 1 times [2024-11-13 13:30:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797484678] [2024-11-13 13:30:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:30:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797484678] [2024-11-13 13:30:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797484678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766620413] [2024-11-13 13:30:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:42,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:42,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:42,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:42,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:30:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:42,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:30:42,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:30:42,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:30:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766620413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:42,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 13:30:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750772810] [2024-11-13 13:30:42,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:42,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:30:42,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:30:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:30:42,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-13 13:30:42,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 82 flow. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2024-11-13 13:30:42,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:42,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-13 13:30:42,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:42,781 INFO L124 PetriNetUnfolderBase]: 93/217 cut-off events. [2024-11-13 13:30:42,782 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-13 13:30:42,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 217 events. 93/217 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 780 event pairs, 31 based on Foata normal form. 18/233 useless extension candidates. Maximal degree in co-relation 573. Up to 76 conditions per place. [2024-11-13 13:30:42,787 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 37 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-11-13 13:30:42,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 266 flow [2024-11-13 13:30:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:30:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:30:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-11-13 13:30:42,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-13 13:30:42,789 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 82 flow. Second operand 10 states and 209 transitions. [2024-11-13 13:30:42,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 266 flow [2024-11-13 13:30:42,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 240 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-13 13:30:42,794 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 126 flow [2024-11-13 13:30:42,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2024-11-13 13:30:42,796 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-13 13:30:42,796 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 126 flow [2024-11-13 13:30:42,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2024-11-13 13:30:42,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:42,796 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:42,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:30:42,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:42,997 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:42,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2098312036, now seen corresponding path program 2 times [2024-11-13 13:30:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:42,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393150004] [2024-11-13 13:30:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:42,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:30:43,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393150004] [2024-11-13 13:30:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393150004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486714659] [2024-11-13 13:30:43,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:30:43,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:43,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:43,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:30:43,301 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:30:43,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:43,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:30:43,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:30:43,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:30:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486714659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:43,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2024-11-13 13:30:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141388669] [2024-11-13 13:30:43,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:30:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:30:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:30:43,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-13 13:30:43,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 126 flow. Second operand has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 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) [2024-11-13 13:30:43,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:43,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-13 13:30:43,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:43,932 INFO L124 PetriNetUnfolderBase]: 89/213 cut-off events. [2024-11-13 13:30:43,932 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-11-13 13:30:43,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 213 events. 89/213 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 596 event pairs, 27 based on Foata normal form. 8/220 useless extension candidates. Maximal degree in co-relation 576. Up to 114 conditions per place. [2024-11-13 13:30:43,934 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 2 changer transitions 20/54 dead transitions. [2024-11-13 13:30:43,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 304 flow [2024-11-13 13:30:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:30:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:30:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-11-13 13:30:43,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-11-13 13:30:43,938 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 126 flow. Second operand 10 states and 163 transitions. [2024-11-13 13:30:43,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 304 flow [2024-11-13 13:30:43,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 287 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 13:30:43,945 INFO L231 Difference]: Finished difference. Result has 58 places, 29 transitions, 136 flow [2024-11-13 13:30:43,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=29} [2024-11-13 13:30:43,947 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-13 13:30:43,947 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 29 transitions, 136 flow [2024-11-13 13:30:43,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 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) [2024-11-13 13:30:43,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:30:43,947 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:43,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:44,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:44,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-13 13:30:44,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1542954039, now seen corresponding path program 1 times [2024-11-13 13:30:44,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:44,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282138986] [2024-11-13 13:30:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:44,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:30:44,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:44,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282138986] [2024-11-13 13:30:44,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282138986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:44,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643989062] [2024-11-13 13:30:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:44,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:44,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:44,337 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:44,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:30:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:44,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:30:44,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:30:44,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:30:44,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643989062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:44,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:44,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 17 [2024-11-13 13:30:44,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855608407] [2024-11-13 13:30:44,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:44,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:30:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:30:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:30:44,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-13 13:30:44,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 29 transitions, 136 flow. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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) [2024-11-13 13:30:44,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:30:44,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-13 13:30:44,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:30:45,175 INFO L124 PetriNetUnfolderBase]: 35/96 cut-off events. [2024-11-13 13:30:45,175 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-13 13:30:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 96 events. 35/96 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 278. Up to 22 conditions per place. [2024-11-13 13:30:45,176 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-11-13 13:30:45,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 216 flow [2024-11-13 13:30:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:30:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:30:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-11-13 13:30:45,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-11-13 13:30:45,178 INFO L175 Difference]: Start difference. First operand has 58 places, 29 transitions, 136 flow. Second operand 10 states and 138 transitions. [2024-11-13 13:30:45,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 216 flow [2024-11-13 13:30:45,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 191 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-13 13:30:45,179 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-11-13 13:30:45,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-11-13 13:30:45,180 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-13 13:30:45,180 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-11-13 13:30:45,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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) [2024-11-13 13:30:45,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2024-11-13 13:30:45,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-11-13 13:30:45,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 16 remaining) [2024-11-13 13:30:45,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2024-11-13 13:30:45,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-11-13 13:30:45,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-11-13 13:30:45,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-11-13 13:30:45,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-11-13 13:30:45,186 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-11-13 13:30:45,186 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-11-13 13:30:45,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:30:45,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:30:45,390 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:45,395 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 13:30:45,396 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:30:45,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:30:45 BasicIcfg [2024-11-13 13:30:45,402 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:30:45,403 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:30:45,403 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:30:45,403 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:30:45,404 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:38" (3/4) ... [2024-11-13 13:30:45,405 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:30:45,408 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-13 13:30:45,409 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-13 13:30:45,412 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-13 13:30:45,412 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 13:30:45,413 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 13:30:45,413 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:30:45,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:30:45,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:30:45,484 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:30:45,486 INFO L158 Benchmark]: Toolchain (without parser) took 8384.30ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 30.7MB in the end (delta: 61.0MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2024-11-13 13:30:45,487 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:30:45,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 807.88ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 71.5MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:30:45,488 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.33ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 70.0MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:30:45,488 INFO L158 Benchmark]: Boogie Preprocessor took 52.14ms. Allocated memory is still 117.4MB. Free memory was 70.0MB in the beginning and 68.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:30:45,489 INFO L158 Benchmark]: RCFGBuilder took 627.05ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 48.3MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:30:45,489 INFO L158 Benchmark]: TraceAbstraction took 6737.41ms. Allocated memory is still 117.4MB. Free memory was 47.8MB in the beginning and 34.7MB in the end (delta: 13.2MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2024-11-13 13:30:45,489 INFO L158 Benchmark]: Witness Printer took 81.91ms. Allocated memory is still 117.4MB. Free memory was 34.7MB in the beginning and 30.7MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:30:45,491 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 807.88ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 71.5MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.33ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 70.0MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.14ms. Allocated memory is still 117.4MB. Free memory was 70.0MB in the beginning and 68.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 627.05ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 48.3MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6737.41ms. Allocated memory is still 117.4MB. Free memory was 47.8MB in the beginning and 34.7MB in the end (delta: 13.2MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Witness Printer took 81.91ms. Allocated memory is still 117.4MB. Free memory was 34.7MB in the beginning and 30.7MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 622 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 603 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 567 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1113 IncrementalHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 36 mSDtfsCounter, 1113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=9, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 241 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 798 SizeOfPredicates, 19 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 169/209 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 13:30:45,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69de1356-4e61-4d3e-aa08-5551e7cd5261/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE