./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 8be7027f 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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:28:42,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:28:42,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:28:42,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:28:42,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:28:42,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:28:42,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:28:42,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:28:42,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:28:42,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:28:42,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:28:42,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:28:42,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:28:42,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:28:42,436 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:28:42,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:28:42,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:28:42,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:28:42,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:28:42,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:28:42,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:28:42,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:28:42,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:28:42,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:28:42,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:28:42,441 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:28:42,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:28:42,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:28:42,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:28:42,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:28:42,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:28:42,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:28:42,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:28:42,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:28:42,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:28:42,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:28:42,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:28:42,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:28:42,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:28:42,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:28:42,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:28:42,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:28:42,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:28:42,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:28:42,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2024-11-12 20:28:42,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:28:42,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:28:42,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:28:42,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:28:42,742 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:28:42,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-12 20:28:44,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:28:44,487 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:28:44,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-12 20:28:44,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dd6f8d4a/33e163cadfc24ed09392371b8f9c90a8/FLAGdf9de0d62 [2024-11-12 20:28:44,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dd6f8d4a/33e163cadfc24ed09392371b8f9c90a8 [2024-11-12 20:28:44,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:28:44,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:28:44,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:28:44,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:28:44,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:28:44,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:44" (1/1) ... [2024-11-12 20:28:44,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6634e26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:44, skipping insertion in model container [2024-11-12 20:28:44,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:44" (1/1) ... [2024-11-12 20:28:44,589 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:28:44,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:28:44,973 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:28:45,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:28:45,132 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:28:45,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45 WrapperNode [2024-11-12 20:28:45,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:28:45,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:28:45,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:28:45,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:28:45,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,186 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2024-11-12 20:28:45,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:28:45,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:28:45,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:28:45,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:28:45,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,222 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]. [2024-11-12 20:28:45,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:28:45,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:28:45,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:28:45,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:28:45,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (1/1) ... [2024-11-12 20:28:45,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:28:45,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:28:45,285 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) [2024-11-12 20:28:45,287 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 [2024-11-12 20:28:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-12 20:28:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-12 20:28:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 20:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 20:28:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:28:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:28:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:28:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:28:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:28:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:28:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:28:45,331 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:28:45,456 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:28:45,459 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:28:45,670 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:28:45,671 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:28:45,779 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:28:45,779 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:28:45,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:45 BoogieIcfgContainer [2024-11-12 20:28:45,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:28:45,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:28:45,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:28:45,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:28:45,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:28:44" (1/3) ... [2024-11-12 20:28:45,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e51012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:45, skipping insertion in model container [2024-11-12 20:28:45,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:45" (2/3) ... [2024-11-12 20:28:45,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e51012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:45, skipping insertion in model container [2024-11-12 20:28:45,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:45" (3/3) ... [2024-11-12 20:28:45,788 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-11-12 20:28:45,803 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:28:45,804 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-12 20:28:45,804 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:28:45,867 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:45,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-11-12 20:28:45,934 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-12 20:28:45,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:28:45,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 2/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-12 20:28:45,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-11-12 20:28:45,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 43 transitions, 93 flow [2024-11-12 20:28:45,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:45,960 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;@70a0c017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:45,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-12 20:28:45,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:45,968 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2024-11-12 20:28:45,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:28:45,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:45,969 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:45,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-12 20:28:45,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -428247446, now seen corresponding path program 1 times [2024-11-12 20:28:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809571444] [2024-11-12 20:28:45,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:46,113 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:28:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:46,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:28:46,160 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:28:46,161 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-12 20:28:46,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-11-12 20:28:46,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-12 20:28:46,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-12 20:28:46,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-12 20:28:46,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-12 20:28:46,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-12 20:28:46,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-12 20:28:46,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-12 20:28:46,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-12 20:28:46,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-12 20:28:46,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-12 20:28:46,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-12 20:28:46,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-12 20:28:46,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-12 20:28:46,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-12 20:28:46,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-12 20:28:46,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-12 20:28:46,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:28:46,167 INFO L421 BasicCegarLoop]: Path program histogram: [1] [2024-11-12 20:28:46,170 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:28:46,170 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 20:28:46,220 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:46,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions, 182 flow [2024-11-12 20:28:46,249 INFO L124 PetriNetUnfolderBase]: 3/77 cut-off events. [2024-11-12 20:28:46,249 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:28:46,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 84. Up to 3 conditions per place. [2024-11-12 20:28:46,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 81 transitions, 182 flow [2024-11-12 20:28:46,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 72 transitions, 157 flow [2024-11-12 20:28:46,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:46,256 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;@70a0c017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:46,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-12 20:28:46,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:46,269 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2024-11-12 20:28:46,269 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:28:46,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:46,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:46,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:28:46,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1540249832, now seen corresponding path program 1 times [2024-11-12 20:28:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992497313] [2024-11-12 20:28:46,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:46,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992497313] [2024-11-12 20:28:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992497313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:46,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:46,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:46,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82859139] [2024-11-12 20:28:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:46,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:28:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:46,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:28:46,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:28:46,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-12 20:28:46,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-12 20:28:46,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:46,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-12 20:28:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:48,327 INFO L124 PetriNetUnfolderBase]: 9181/16008 cut-off events. [2024-11-12 20:28:48,327 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-11-12 20:28:48,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28972 conditions, 16008 events. 9181/16008 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 118643 event pairs, 2182 based on Foata normal form. 1986/16482 useless extension candidates. Maximal degree in co-relation 28961. Up to 10173 conditions per place. [2024-11-12 20:28:48,484 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 84 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-11-12 20:28:48,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 439 flow [2024-11-12 20:28:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:28:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:28:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2024-11-12 20:28:48,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2024-11-12 20:28:48,500 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 157 flow. Second operand 5 states and 262 transitions. [2024-11-12 20:28:48,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 439 flow [2024-11-12 20:28:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:28:48,512 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 196 flow [2024-11-12 20:28:48,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-12 20:28:48,518 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-12 20:28:48,519 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 196 flow [2024-11-12 20:28:48,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-12 20:28:48,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:48,520 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:28:48,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:28:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1580596393, now seen corresponding path program 1 times [2024-11-12 20:28:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279116734] [2024-11-12 20:28:48,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:48,552 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:28:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:48,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:28:48,581 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:28:48,581 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-11-12 20:28:48,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2024-11-12 20:28:48,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2024-11-12 20:28:48,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2024-11-12 20:28:48,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2024-11-12 20:28:48,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2024-11-12 20:28:48,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2024-11-12 20:28:48,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2024-11-12 20:28:48,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2024-11-12 20:28:48,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2024-11-12 20:28:48,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2024-11-12 20:28:48,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2024-11-12 20:28:48,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2024-11-12 20:28:48,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2024-11-12 20:28:48,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2024-11-12 20:28:48,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2024-11-12 20:28:48,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2024-11-12 20:28:48,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2024-11-12 20:28:48,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2024-11-12 20:28:48,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2024-11-12 20:28:48,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2024-11-12 20:28:48,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2024-11-12 20:28:48,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2024-11-12 20:28:48,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2024-11-12 20:28:48,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2024-11-12 20:28:48,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2024-11-12 20:28:48,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:28:48,589 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 20:28:48,590 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:28:48,590 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 20:28:48,647 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 118 transitions, 272 flow [2024-11-12 20:28:48,670 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2024-11-12 20:28:48,670 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 20:28:48,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2024-11-12 20:28:48,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 118 transitions, 272 flow [2024-11-12 20:28:48,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 101 transitions, 223 flow [2024-11-12 20:28:48,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:48,676 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;@70a0c017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:48,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-12 20:28:48,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:48,683 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2024-11-12 20:28:48,683 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:28:48,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:48,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:48,683 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-12 20:28:48,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1118531171, now seen corresponding path program 1 times [2024-11-12 20:28:48,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:48,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064349884] [2024-11-12 20:28:48,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064349884] [2024-11-12 20:28:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064349884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:48,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:48,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:48,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171236563] [2024-11-12 20:28:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:48,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:28:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:28:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:28:48,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 118 [2024-11-12 20:28:48,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2024-11-12 20:28:48,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:48,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 118 [2024-11-12 20:28:48,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:29:09,418 INFO L124 PetriNetUnfolderBase]: 193529/301740 cut-off events. [2024-11-12 20:29:09,418 INFO L125 PetriNetUnfolderBase]: For 7130/7130 co-relation queries the response was YES. [2024-11-12 20:29:10,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553833 conditions, 301740 events. 193529/301740 cut-off events. For 7130/7130 co-relation queries the response was YES. Maximal size of possible extension queue 7249. Compared 2773027 event pairs, 47152 based on Foata normal form. 30137/302672 useless extension candidates. Maximal degree in co-relation 553821. Up to 218309 conditions per place. [2024-11-12 20:29:11,939 INFO L140 encePairwiseOnDemand]: 109/118 looper letters, 136 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2024-11-12 20:29:11,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 710 flow [2024-11-12 20:29:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:29:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:29:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2024-11-12 20:29:11,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6711864406779661 [2024-11-12 20:29:11,945 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 223 flow. Second operand 5 states and 396 transitions. [2024-11-12 20:29:11,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 710 flow [2024-11-12 20:29:11,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 185 transitions, 701 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-12 20:29:11,970 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 277 flow [2024-11-12 20:29:11,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-11-12 20:29:11,972 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2024-11-12 20:29:11,973 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 277 flow [2024-11-12 20:29:11,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2024-11-12 20:29:11,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:29:11,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:29:11,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:29:11,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-11-12 20:29:11,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:29:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1166615489, now seen corresponding path program 1 times [2024-11-12 20:29:11,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:29:11,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257756309] [2024-11-12 20:29:11,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:29:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:29:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:29:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:29:12,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:29:12,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257756309] [2024-11-12 20:29:12,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257756309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:29:12,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:29:12,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:29:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630593640] [2024-11-12 20:29:12,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:29:12,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:29:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:29:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:29:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:29:12,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 118 [2024-11-12 20:29:12,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-11-12 20:29:12,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:29:12,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 118 [2024-11-12 20:29:12,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:29:34,935 INFO L124 PetriNetUnfolderBase]: 224569/345872 cut-off events. [2024-11-12 20:29:34,935 INFO L125 PetriNetUnfolderBase]: For 47562/48090 co-relation queries the response was YES. [2024-11-12 20:29:35,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674657 conditions, 345872 events. 224569/345872 cut-off events. For 47562/48090 co-relation queries the response was YES. Maximal size of possible extension queue 8394. Compared 3172277 event pairs, 51532 based on Foata normal form. 3372/314447 useless extension candidates. Maximal degree in co-relation 674641. Up to 227737 conditions per place. [2024-11-12 20:29:37,507 INFO L140 encePairwiseOnDemand]: 110/118 looper letters, 175 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2024-11-12 20:29:37,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 224 transitions, 934 flow [2024-11-12 20:29:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:29:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:29:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2024-11-12 20:29:37,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-11-12 20:29:37,511 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 277 flow. Second operand 6 states and 462 transitions. [2024-11-12 20:29:37,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 224 transitions, 934 flow