./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_11-equ_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_11-equ_nr.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 071be118cd0932d66afa6bce30fcab76880adc6e53d2ca540223cce2e13054f4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:53:41,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:53:41,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:53:41,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:53:41,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:53:41,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:53:41,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:53:41,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:53:41,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:53:41,227 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:53:41,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:53:41,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:53:41,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:53:41,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:53:41,230 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:53:41,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:53:41,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:53:41,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:53:41,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:53:41,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:53:41,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:53:41,234 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:53:41,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:53:41,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:53:41,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:53:41,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:53:41,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:53:41,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:53:41,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:53:41,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:53:41,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:53:41,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:53:41,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:53:41,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:53:41,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:53:41,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:53:41,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:53:41,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:53:41,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 071be118cd0932d66afa6bce30fcab76880adc6e53d2ca540223cce2e13054f4 [2024-11-20 21:53:41,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:53:41,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:53:41,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:53:41,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:53:41,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:53:41,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_11-equ_nr.i [2024-11-20 21:53:42,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:53:42,827 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:53:42,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_11-equ_nr.i [2024-11-20 21:53:42,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2f0faaa/e9db176b54954006ba890bad6ddf339a/FLAGdba1cda06 [2024-11-20 21:53:43,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2f0faaa/e9db176b54954006ba890bad6ddf339a [2024-11-20 21:53:43,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:53:43,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:53:43,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:53:43,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:53:43,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:53:43,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af4595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43, skipping insertion in model container [2024-11-20 21:53:43,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:53:43,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:53:43,535 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:53:43,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:53:43,656 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:53:43,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43 WrapperNode [2024-11-20 21:53:43,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:53:43,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:53:43,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:53:43,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:53:43,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,706 INFO L138 Inliner]: procedures = 265, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-20 21:53:43,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:53:43,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:53:43,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:53:43,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:53:43,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,732 INFO L175 MemorySlicer]: Split 18 memory accesses to 1 slices as follows [18]. 100 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [16]. The 2 writes are split as follows [2]. [2024-11-20 21:53:43,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:53:43,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:53:43,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:53:43,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:53:43,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:53:43,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:43,775 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) [2024-11-20 21:53:43,777 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 [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 21:53:43,811 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:53:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:53:43,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:53:43,812 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:53:43,903 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:53:43,905 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:53:44,017 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:53:44,018 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:53:44,122 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:53:44,122 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 21:53:44,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:44 BoogieIcfgContainer [2024-11-20 21:53:44,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:53:44,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:53:44,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:53:44,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:53:44,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:53:43" (1/3) ... [2024-11-20 21:53:44,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b98177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:53:44, skipping insertion in model container [2024-11-20 21:53:44,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43" (2/3) ... [2024-11-20 21:53:44,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b98177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:53:44, skipping insertion in model container [2024-11-20 21:53:44,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:44" (3/3) ... [2024-11-20 21:53:44,129 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_11-equ_nr.i [2024-11-20 21:53:44,140 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:53:44,140 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-20 21:53:44,140 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:53:44,165 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 21:53:44,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 27 transitions, 58 flow [2024-11-20 21:53:44,216 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2024-11-20 21:53:44,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:44,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 27 events. 1/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-20 21:53:44,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 27 transitions, 58 flow [2024-11-20 21:53:44,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 11 places, 10 transitions, 20 flow [2024-11-20 21:53:44,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:53:44,236 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;@2b58f84b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:53:44,237 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 21:53:44,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:53:44,241 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-20 21:53:44,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:44,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:44,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 21:53:44,242 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-20 21:53:44,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 6553607, now seen corresponding path program 1 times [2024-11-20 21:53:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:44,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150557419] [2024-11-20 21:53:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150557419] [2024-11-20 21:53:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150557419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:44,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:44,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375214991] [2024-11-20 21:53:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:44,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:53:44,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:53:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:53:44,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-20 21:53:44,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 10 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-20 21:53:44,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:44,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-20 21:53:44,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:44,510 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-20 21:53:44,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:44,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 9 events. 0/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2024-11-20 21:53:44,511 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 4 selfloop transitions, 1 changer transitions 0/9 dead transitions. [2024-11-20 21:53:44,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 9 transitions, 28 flow [2024-11-20 21:53:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:53:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:53:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2024-11-20 21:53:44,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2962962962962963 [2024-11-20 21:53:44,521 INFO L175 Difference]: Start difference. First operand has 11 places, 10 transitions, 20 flow. Second operand 3 states and 24 transitions. [2024-11-20 21:53:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 9 transitions, 28 flow [2024-11-20 21:53:44,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 28 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:53:44,524 INFO L231 Difference]: Finished difference. Result has 12 places, 9 transitions, 20 flow [2024-11-20 21:53:44,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=12, PETRI_TRANSITIONS=9} [2024-11-20 21:53:44,529 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 1 predicate places. [2024-11-20 21:53:44,530 INFO L471 AbstractCegarLoop]: Abstraction has has 12 places, 9 transitions, 20 flow [2024-11-20 21:53:44,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-20 21:53:44,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:44,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 21:53:44,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:53:44,531 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-20 21:53:44,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 6553634, now seen corresponding path program 1 times [2024-11-20 21:53:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581609366] [2024-11-20 21:53:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:44,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:44,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581609366] [2024-11-20 21:53:44,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581609366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:44,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:44,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:44,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637732045] [2024-11-20 21:53:44,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:44,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:44,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:44,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-20 21:53:44,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 9 transitions, 20 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-20 21:53:44,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:44,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-20 21:53:44,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:44,644 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-20 21:53:44,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:44,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2024-11-20 21:53:44,645 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 3 selfloop transitions, 2 changer transitions 0/8 dead transitions. [2024-11-20 21:53:44,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 8 transitions, 28 flow [2024-11-20 21:53:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:53:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:53:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2024-11-20 21:53:44,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-11-20 21:53:44,647 INFO L175 Difference]: Start difference. First operand has 12 places, 9 transitions, 20 flow. Second operand 4 states and 30 transitions. [2024-11-20 21:53:44,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 8 transitions, 28 flow [2024-11-20 21:53:44,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 27 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:53:44,648 INFO L231 Difference]: Finished difference. Result has 13 places, 8 transitions, 21 flow [2024-11-20 21:53:44,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=21, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2024-11-20 21:53:44,649 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2024-11-20 21:53:44,649 INFO L471 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 21 flow [2024-11-20 21:53:44,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-20 21:53:44,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:44,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:53:44,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 21:53:44,650 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-20 21:53:44,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:44,651 INFO L85 PathProgramCache]: Analyzing trace with hash 203162846, now seen corresponding path program 1 times [2024-11-20 21:53:44,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:44,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411303055] [2024-11-20 21:53:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411303055] [2024-11-20 21:53:44,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411303055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:44,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:44,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:53:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339728440] [2024-11-20 21:53:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:44,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:53:44,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:53:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:53:44,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-20 21:53:44,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 8 transitions, 21 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-20 21:53:44,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:44,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-20 21:53:44,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:44,739 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-20 21:53:44,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:44,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-20 21:53:44,739 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 1 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2024-11-20 21:53:44,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 27 flow [2024-11-20 21:53:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:53:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:53:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2024-11-20 21:53:44,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25925925925925924 [2024-11-20 21:53:44,741 INFO L175 Difference]: Start difference. First operand has 13 places, 8 transitions, 21 flow. Second operand 5 states and 35 transitions. [2024-11-20 21:53:44,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 27 flow [2024-11-20 21:53:44,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 24 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:53:44,741 INFO L231 Difference]: Finished difference. Result has 14 places, 5 transitions, 15 flow [2024-11-20 21:53:44,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=15, PETRI_PLACES=14, PETRI_TRANSITIONS=5} [2024-11-20 21:53:44,742 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 3 predicate places. [2024-11-20 21:53:44,742 INFO L471 AbstractCegarLoop]: Abstraction has has 14 places, 5 transitions, 15 flow [2024-11-20 21:53:44,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-20 21:53:44,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:44,742 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:53:44,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:53:44,743 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-20 21:53:44,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 203162011, now seen corresponding path program 1 times [2024-11-20 21:53:44,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:44,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476559532] [2024-11-20 21:53:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:44,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:44,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476559532] [2024-11-20 21:53:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476559532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:44,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448675785] [2024-11-20 21:53:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:44,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:53:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:53:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:53:44,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-20 21:53:44,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 5 transitions, 15 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-20 21:53:44,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:44,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-20 21:53:44,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:44,795 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-20 21:53:44,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:44,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 4 events. 0/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2024-11-20 21:53:44,795 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2024-11-20 21:53:44,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 4 transitions, 19 flow [2024-11-20 21:53:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:53:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:53:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2024-11-20 21:53:44,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2716049382716049 [2024-11-20 21:53:44,796 INFO L175 Difference]: Start difference. First operand has 14 places, 5 transitions, 15 flow. Second operand 3 states and 22 transitions. [2024-11-20 21:53:44,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 4 transitions, 19 flow [2024-11-20 21:53:44,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 16 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:53:44,797 INFO L231 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2024-11-20 21:53:44,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2024-11-20 21:53:44,797 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, -2 predicate places. [2024-11-20 21:53:44,797 INFO L471 AbstractCegarLoop]: Abstraction has has 9 places, 0 transitions, 0 flow [2024-11-20 21:53:44,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-20 21:53:44,800 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2024-11-20 21:53:44,800 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2024-11-20 21:53:44,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2024-11-20 21:53:44,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2024-11-20 21:53:44,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-20 21:53:44,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 21:53:44,801 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-20 21:53:44,805 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 21:53:44,805 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 21:53:44,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:53:44 BasicIcfg [2024-11-20 21:53:44,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 21:53:44,810 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 21:53:44,810 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 21:53:44,810 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 21:53:44,810 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:44" (3/4) ... [2024-11-20 21:53:44,814 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 21:53:44,817 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-20 21:53:44,821 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-11-20 21:53:44,822 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-20 21:53:44,822 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 21:53:44,822 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 21:53:44,891 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 21:53:44,891 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 21:53:44,891 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 21:53:44,892 INFO L158 Benchmark]: Toolchain (without parser) took 1713.21ms. Allocated memory is still 148.9MB. Free memory was 78.5MB in the beginning and 83.4MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:53:44,892 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:53:44,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.52ms. Allocated memory is still 148.9MB. Free memory was 78.2MB in the beginning and 115.0MB in the end (delta: -36.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2024-11-20 21:53:44,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.52ms. Allocated memory is still 148.9MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:53:44,894 INFO L158 Benchmark]: Boogie Preprocessor took 41.30ms. Allocated memory is still 148.9MB. Free memory was 112.9MB in the beginning and 110.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:53:44,894 INFO L158 Benchmark]: RCFGBuilder took 374.26ms. Allocated memory is still 148.9MB. Free memory was 110.8MB in the beginning and 80.7MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-20 21:53:44,894 INFO L158 Benchmark]: TraceAbstraction took 685.82ms. Allocated memory is still 148.9MB. Free memory was 80.0MB in the beginning and 87.6MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:53:44,894 INFO L158 Benchmark]: Witness Printer took 81.52ms. Allocated memory is still 148.9MB. Free memory was 87.6MB in the beginning and 83.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 21:53:44,897 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.52ms. Allocated memory is still 148.9MB. Free memory was 78.2MB in the beginning and 115.0MB in the end (delta: -36.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.52ms. Allocated memory is still 148.9MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.30ms. Allocated memory is still 148.9MB. Free memory was 112.9MB in the beginning and 110.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.26ms. Allocated memory is still 148.9MB. Free memory was 110.8MB in the beginning and 80.7MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 685.82ms. Allocated memory is still 148.9MB. Free memory was 80.0MB in the beginning and 87.6MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 81.52ms. Allocated memory is still 148.9MB. Free memory was 87.6MB in the beginning and 83.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1016]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1013]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1016]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1013]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 3 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 21:53:44,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE