./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:35:17,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:35:17,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:35:17,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:35:17,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:35:17,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:35:17,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:35:17,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:35:17,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:35:17,206 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:35:17,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:35:17,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:35:17,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:35:17,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:35:17,209 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:35:17,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:35:17,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:35:17,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:35:17,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:35:17,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:35:17,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:35:17,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:35:17,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:35:17,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:35:17,212 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:35:17,213 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:35:17,213 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:35:17,213 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:35:17,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:35:17,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:35:17,215 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:35:17,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:35:17,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:35:17,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:35:17,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:35:17,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:35:17,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:35:17,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:35:17,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:35:17,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:35:17,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:35:17,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:35:17,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:35:17,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:35:17,219 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2024-11-17 07:35:17,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:35:17,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:35:17,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:35:17,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:35:17,543 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:35:17,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-17 07:35:19,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:35:19,308 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:35:19,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-17 07:35:19,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc41c9599/da247985171b430baf09c392500d828b/FLAG210e43acc [2024-11-17 07:35:19,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc41c9599/da247985171b430baf09c392500d828b [2024-11-17 07:35:19,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:35:19,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:35:19,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:35:19,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:35:19,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:35:19,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:19,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84c448d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19, skipping insertion in model container [2024-11-17 07:35:19,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:19,397 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:35:19,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:35:19,832 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:35:19,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:35:19,922 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:35:19,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19 WrapperNode [2024-11-17 07:35:19,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:35:19,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:35:19,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:35:19,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:35:19,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:19,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:19,977 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-11-17 07:35:19,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:35:19,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:35:19,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:35:19,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:35:19,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:19,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:19,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,016 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-17 07:35:20,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,022 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:35:20,039 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:35:20,039 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:35:20,039 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:35:20,043 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (1/1) ... [2024-11-17 07:35:20,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:35:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:35:20,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:35:20,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:35:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-17 07:35:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-17 07:35:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 07:35:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 07:35:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:35:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:35:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:35:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:35:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:35:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:35:20,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:35:20,139 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:35:20,283 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:35:20,285 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:35:20,540 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:35:20,540 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:35:20,657 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:35:20,658 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:35:20,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:35:20 BoogieIcfgContainer [2024-11-17 07:35:20,658 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:35:20,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:35:20,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:35:20,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:35:20,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:35:19" (1/3) ... [2024-11-17 07:35:20,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6a978c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:35:20, skipping insertion in model container [2024-11-17 07:35:20,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:35:19" (2/3) ... [2024-11-17 07:35:20,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6a978c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:35:20, skipping insertion in model container [2024-11-17 07:35:20,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:35:20" (3/3) ... [2024-11-17 07:35:20,667 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-11-17 07:35:20,685 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:35:20,685 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:35:20,686 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:35:20,755 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:35:20,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 50 transitions, 108 flow [2024-11-17 07:35:20,840 INFO L124 PetriNetUnfolderBase]: 5/54 cut-off events. [2024-11-17 07:35:20,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:35:20,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 5/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2024-11-17 07:35:20,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 50 transitions, 108 flow [2024-11-17 07:35:20,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 49 transitions, 105 flow [2024-11-17 07:35:20,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:35:20,877 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;@2e201d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:35:20,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 07:35:20,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:35:20,894 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-17 07:35:20,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:35:20,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:35:20,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:35:20,897 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:35:20,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:35:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 380927863, now seen corresponding path program 1 times [2024-11-17 07:35:20,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:35:20,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969216310] [2024-11-17 07:35:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:35:20,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:35:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:35:21,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:35:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:35:21,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:35:21,109 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:35:21,110 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-17 07:35:21,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-11-17 07:35:21,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-17 07:35:21,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-17 07:35:21,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-17 07:35:21,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-17 07:35:21,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-17 07:35:21,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-17 07:35:21,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-17 07:35:21,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-17 07:35:21,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-17 07:35:21,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-17 07:35:21,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-17 07:35:21,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-17 07:35:21,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-17 07:35:21,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-17 07:35:21,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-17 07:35:21,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-17 07:35:21,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:35:21,116 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-17 07:35:21,120 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:35:21,120 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:35:21,177 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:35:21,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 200 flow [2024-11-17 07:35:21,212 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2024-11-17 07:35:21,212 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:35:21,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 89 events. 7/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2024-11-17 07:35:21,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 90 transitions, 200 flow [2024-11-17 07:35:21,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 169 flow [2024-11-17 07:35:21,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:35:21,218 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;@2e201d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:35:21,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-17 07:35:21,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:35:21,228 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-17 07:35:21,228 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:35:21,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:35:21,229 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:35:21,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:35:21,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:35:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1394404141, now seen corresponding path program 1 times [2024-11-17 07:35:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:35:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211074827] [2024-11-17 07:35:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:35:21,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:35:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:35:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:35:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:35:21,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211074827] [2024-11-17 07:35:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211074827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:35:21,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:35:21,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:35:21,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108176982] [2024-11-17 07:35:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:35:21,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:35:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:35:21,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:35:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:35:21,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 90 [2024-11-17 07:35:21,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-17 07:35:21,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:35:21,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 90 [2024-11-17 07:35:21,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:35:23,634 INFO L124 PetriNetUnfolderBase]: 9181/16061 cut-off events. [2024-11-17 07:35:23,635 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2024-11-17 07:35:23,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29025 conditions, 16061 events. 9181/16061 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 123905 event pairs, 2182 based on Foata normal form. 4948/19487 useless extension candidates. Maximal degree in co-relation 29014. Up to 10173 conditions per place. [2024-11-17 07:35:23,796 INFO L140 encePairwiseOnDemand]: 80/90 looper letters, 84 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-11-17 07:35:23,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 443 flow [2024-11-17 07:35:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:35:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:35:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2024-11-17 07:35:23,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-17 07:35:23,816 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 169 flow. Second operand 5 states and 285 transitions. [2024-11-17 07:35:23,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 443 flow [2024-11-17 07:35:23,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:35:23,833 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 200 flow [2024-11-17 07:35:23,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-11-17 07:35:23,841 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-17 07:35:23,841 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 200 flow [2024-11-17 07:35:23,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-17 07:35:23,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:35:23,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:35:23,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:35:23,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:35:23,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:35:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash -7406418, now seen corresponding path program 1 times [2024-11-17 07:35:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:35:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777666458] [2024-11-17 07:35:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:35:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:35:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:35:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:35:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:35:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777666458] [2024-11-17 07:35:23,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777666458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:35:23,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:35:23,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:35:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695075527] [2024-11-17 07:35:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:35:23,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:35:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:35:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:35:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:35:24,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 90 [2024-11-17 07:35:24,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-17 07:35:24,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:35:24,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 90 [2024-11-17 07:35:24,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:35:25,857 INFO L124 PetriNetUnfolderBase]: 10421/17721 cut-off events. [2024-11-17 07:35:25,858 INFO L125 PetriNetUnfolderBase]: For 1794/1818 co-relation queries the response was YES. [2024-11-17 07:35:25,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34017 conditions, 17721 events. 10421/17721 cut-off events. For 1794/1818 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 134801 event pairs, 2326 based on Foata normal form. 216/16223 useless extension candidates. Maximal degree in co-relation 34002. Up to 10309 conditions per place. [2024-11-17 07:35:25,997 INFO L140 encePairwiseOnDemand]: 83/90 looper letters, 107 selfloop transitions, 8 changer transitions 0/143 dead transitions. [2024-11-17 07:35:25,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 143 transitions, 579 flow [2024-11-17 07:35:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:35:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:35:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 314 transitions. [2024-11-17 07:35:26,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5814814814814815 [2024-11-17 07:35:26,001 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 200 flow. Second operand 6 states and 314 transitions. [2024-11-17 07:35:26,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 143 transitions, 579 flow [2024-11-17 07:35:26,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:35:26,017 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 234 flow [2024-11-17 07:35:26,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-11-17 07:35:26,019 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 9 predicate places. [2024-11-17 07:35:26,019 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 234 flow [2024-11-17 07:35:26,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-17 07:35:26,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:35:26,020 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:35:26,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:35:26,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:35:26,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:35:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash 153409636, now seen corresponding path program 1 times [2024-11-17 07:35:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:35:26,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049138776] [2024-11-17 07:35:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:35:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:35:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:35:26,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:35:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:35:26,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:35:26,066 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:35:26,067 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-11-17 07:35:26,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2024-11-17 07:35:26,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2024-11-17 07:35:26,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2024-11-17 07:35:26,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2024-11-17 07:35:26,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2024-11-17 07:35:26,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2024-11-17 07:35:26,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2024-11-17 07:35:26,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:35:26,073 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 07:35:26,074 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:35:26,074 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:35:26,131 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:35:26,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 130 transitions, 296 flow [2024-11-17 07:35:26,152 INFO L124 PetriNetUnfolderBase]: 9/124 cut-off events. [2024-11-17 07:35:26,152 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 07:35:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 124 events. 9/124 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 362 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2024-11-17 07:35:26,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 130 transitions, 296 flow [2024-11-17 07:35:26,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 235 flow [2024-11-17 07:35:26,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:35:26,159 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;@2e201d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:35:26,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-17 07:35:26,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:35:26,167 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2024-11-17 07:35:26,167 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:35:26,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:35:26,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:35:26,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-17 07:35:26,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:35:26,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1077546150, now seen corresponding path program 1 times [2024-11-17 07:35:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:35:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405169799] [2024-11-17 07:35:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:35:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:35:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:35:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:35:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:35:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405169799] [2024-11-17 07:35:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405169799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:35:26,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:35:26,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:35:26,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779296936] [2024-11-17 07:35:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:35:26,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:35:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:35:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:35:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:35:26,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 130 [2024-11-17 07:35:26,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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) [2024-11-17 07:35:26,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:35:26,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 130 [2024-11-17 07:35:26,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:35:49,206 INFO L124 PetriNetUnfolderBase]: 193529/302445 cut-off events. [2024-11-17 07:35:49,207 INFO L125 PetriNetUnfolderBase]: For 7254/7254 co-relation queries the response was YES. [2024-11-17 07:35:50,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554538 conditions, 302445 events. 193529/302445 cut-off events. For 7254/7254 co-relation queries the response was YES. Maximal size of possible extension queue 7893. Compared 2840325 event pairs, 47152 based on Foata normal form. 75024/348143 useless extension candidates. Maximal degree in co-relation 554526. Up to 218309 conditions per place. [2024-11-17 07:35:51,917 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 136 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2024-11-17 07:35:51,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 187 transitions, 714 flow [2024-11-17 07:35:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:35:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:35:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2024-11-17 07:35:51,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523076923076923 [2024-11-17 07:35:51,921 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 235 flow. Second operand 5 states and 424 transitions. [2024-11-17 07:35:51,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 187 transitions, 714 flow [2024-11-17 07:35:51,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 187 transitions, 705 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-17 07:35:51,934 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 281 flow [2024-11-17 07:35:51,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2024-11-17 07:35:51,936 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2024-11-17 07:35:51,936 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 281 flow [2024-11-17 07:35:51,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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) [2024-11-17 07:35:51,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:35:51,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:35:51,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:35:51,937 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-17 07:35:51,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:35:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash 434745511, now seen corresponding path program 1 times [2024-11-17 07:35:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:35:51,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996706427] [2024-11-17 07:35:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:35:51,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:35:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:35:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:35:52,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:35:52,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996706427] [2024-11-17 07:35:52,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996706427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:35:52,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:35:52,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:35:52,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815522780] [2024-11-17 07:35:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:35:52,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:35:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:35:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:35:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:35:52,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 130 [2024-11-17 07:35:52,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 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) [2024-11-17 07:35:52,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:35:52,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 130 [2024-11-17 07:35:52,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand