./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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-lit/sssc12.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 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:16:22,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:16:22,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:16:22,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:16:22,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:16:22,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:16:22,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:16:22,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:16:22,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:16:22,187 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:16:22,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:16:22,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:16:22,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:16:22,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:16:22,189 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:16:22,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:16:22,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:16:22,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:16:22,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:16:22,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:16:22,190 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 [2025-03-04 15:16:22,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:16:22,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:16:22,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:16:22,438 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:16:22,438 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:16:22,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/sssc12.i [2025-03-04 15:16:23,659 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0718d148e/0f517c29696a4dd3a90ebf535e2e57f6/FLAGfa6f44312 [2025-03-04 15:16:23,922 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:16:23,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12.i [2025-03-04 15:16:23,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0718d148e/0f517c29696a4dd3a90ebf535e2e57f6/FLAGfa6f44312 [2025-03-04 15:16:24,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0718d148e/0f517c29696a4dd3a90ebf535e2e57f6 [2025-03-04 15:16:24,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:16:24,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:16:24,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:16:24,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:16:24,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:16:24,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758f4670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24, skipping insertion in model container [2025-03-04 15:16:24,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:16:24,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:16:24,623 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:16:24,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:16:24,713 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:16:24,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24 WrapperNode [2025-03-04 15:16:24,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:16:24,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:16:24,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:16:24,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:16:24,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,761 INFO L138 Inliner]: procedures = 272, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2025-03-04 15:16:24,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:16:24,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:16:24,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:16:24,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:16:24,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,791 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 1, 5]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2025-03-04 15:16:24,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,797 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:16:24,801 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:16:24,801 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:16:24,801 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:16:24,803 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (1/1) ... [2025-03-04 15:16:24,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:16:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:16:24,830 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) [2025-03-04 15:16:24,836 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 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2025-03-04 15:16:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:16:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:16:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:16:24,853 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:16:24,965 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:16:24,966 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:16:25,102 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:16:25,102 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:16:25,212 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:16:25,212 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:16:25,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:16:25 BoogieIcfgContainer [2025-03-04 15:16:25,212 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:16:25,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:16:25,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:16:25,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:16:25,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:16:24" (1/3) ... [2025-03-04 15:16:25,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d952f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:16:25, skipping insertion in model container [2025-03-04 15:16:25,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:16:24" (2/3) ... [2025-03-04 15:16:25,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d952f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:16:25, skipping insertion in model container [2025-03-04 15:16:25,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:16:25" (3/3) ... [2025-03-04 15:16:25,224 INFO L128 eAbstractionObserver]: Analyzing ICFG sssc12.i [2025-03-04 15:16:25,237 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:16:25,239 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sssc12.i that has 2 procedures, 25 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-04 15:16:25,239 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:16:25,283 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:16:25,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 27 transitions, 58 flow [2025-03-04 15:16:25,332 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2025-03-04 15:16:25,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:16:25,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 2/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-03-04 15:16:25,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 27 transitions, 58 flow [2025-03-04 15:16:25,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 27 transitions, 58 flow [2025-03-04 15:16:25,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:16:25,360 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;@37c7e6ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:16:25,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-04 15:16:25,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:16:25,365 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-04 15:16:25,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:16:25,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:25,365 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:16:25,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:16:25,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1973979707, now seen corresponding path program 1 times [2025-03-04 15:16:25,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226332117] [2025-03-04 15:16:25,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:25,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:25,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:16:25,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:16:25,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:25,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:16:25,469 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:16:25,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:16:25,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:16:25,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:25,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:16:25,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:16:25,514 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:16:25,515 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-04 15:16:25,516 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-03-04 15:16:25,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-03-04 15:16:25,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-03-04 15:16:25,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-03-04 15:16:25,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-03-04 15:16:25,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-03-04 15:16:25,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-03-04 15:16:25,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-03-04 15:16:25,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-03-04 15:16:25,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-03-04 15:16:25,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-03-04 15:16:25,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-03-04 15:16:25,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:16:25,521 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 15:16:25,525 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:16:25,525 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 15:16:25,550 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:16:25,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 49 transitions, 108 flow [2025-03-04 15:16:25,569 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2025-03-04 15:16:25,570 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:16:25,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 4/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2025-03-04 15:16:25,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 49 transitions, 108 flow [2025-03-04 15:16:25,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 49 transitions, 108 flow [2025-03-04 15:16:25,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:16:25,575 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;@37c7e6ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:16:25,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-03-04 15:16:25,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:16:25,581 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-04 15:16:25,581 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:16:25,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:25,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:16:25,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-04 15:16:25,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1223040478, now seen corresponding path program 1 times [2025-03-04 15:16:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741508310] [2025-03-04 15:16:25,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:25,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:16:25,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:16:25,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:25,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:16:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:16:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:16:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741508310] [2025-03-04 15:16:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741508310] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:16:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:16:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:16:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517936486] [2025-03-04 15:16:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:16:25,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:16:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:16:25,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:16:25,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:16:25,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2025-03-04 15:16:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2025-03-04 15:16:25,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:16:25,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2025-03-04 15:16:25,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:16:26,076 INFO L124 PetriNetUnfolderBase]: 893/1766 cut-off events. [2025-03-04 15:16:26,076 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-03-04 15:16:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 1766 events. 893/1766 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11155 event pairs, 328 based on Foata normal form. 140/1601 useless extension candidates. Maximal degree in co-relation 1112. Up to 848 conditions per place. [2025-03-04 15:16:26,096 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 45 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2025-03-04 15:16:26,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 245 flow [2025-03-04 15:16:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:16:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:16:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2025-03-04 15:16:26,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.782312925170068 [2025-03-04 15:16:26,108 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 108 flow. Second operand 3 states and 115 transitions. [2025-03-04 15:16:26,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 245 flow [2025-03-04 15:16:26,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:16:26,119 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 139 flow [2025-03-04 15:16:26,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2025-03-04 15:16:26,124 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2025-03-04 15:16:26,124 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 139 flow [2025-03-04 15:16:26,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2025-03-04 15:16:26,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:26,125 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-04 15:16:26,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:16:26,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-04 15:16:26,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash 415838045, now seen corresponding path program 1 times [2025-03-04 15:16:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:26,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100671482] [2025-03-04 15:16:26,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:26,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:26,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:16:26,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:16:26,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:26,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:16:26,156 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:16:26,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:16:26,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:16:26,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:26,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:16:26,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:16:26,172 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2025-03-04 15:16:26,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2025-03-04 15:16:26,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2025-03-04 15:16:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:16:26,174 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 15:16:26,175 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:16:26,175 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 15:16:26,200 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:16:26,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 160 flow [2025-03-04 15:16:26,210 INFO L124 PetriNetUnfolderBase]: 6/79 cut-off events. [2025-03-04 15:16:26,211 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 15:16:26,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 79 events. 6/79 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2025-03-04 15:16:26,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 71 transitions, 160 flow [2025-03-04 15:16:26,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 160 flow [2025-03-04 15:16:26,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:16:26,215 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;@37c7e6ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:16:26,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-04 15:16:26,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:16:26,218 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-04 15:16:26,218 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:16:26,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:26,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:16:26,218 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-04 15:16:26,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash -515615714, now seen corresponding path program 1 times [2025-03-04 15:16:26,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:26,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343119466] [2025-03-04 15:16:26,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:26,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:26,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:16:26,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:16:26,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:26,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:16:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:16:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:16:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343119466] [2025-03-04 15:16:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343119466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:16:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:16:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:16:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358619306] [2025-03-04 15:16:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:16:26,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:16:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:16:26,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:16:26,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:16:26,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71 [2025-03-04 15:16:26,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2025-03-04 15:16:26,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:16:26,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71 [2025-03-04 15:16:26,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:16:28,228 INFO L124 PetriNetUnfolderBase]: 19357/29470 cut-off events. [2025-03-04 15:16:28,229 INFO L125 PetriNetUnfolderBase]: For 1051/1051 co-relation queries the response was YES. [2025-03-04 15:16:28,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55912 conditions, 29470 events. 19357/29470 cut-off events. For 1051/1051 co-relation queries the response was YES. Maximal size of possible extension queue 1574. Compared 221847 event pairs, 6099 based on Foata normal form. 1714/25761 useless extension candidates. Maximal degree in co-relation 7607. Up to 19700 conditions per place. [2025-03-04 15:16:28,396 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 66 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2025-03-04 15:16:28,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 98 transitions, 366 flow [2025-03-04 15:16:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:16:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:16:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2025-03-04 15:16:28,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7887323943661971 [2025-03-04 15:16:28,400 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 160 flow. Second operand 3 states and 168 transitions. [2025-03-04 15:16:28,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 98 transitions, 366 flow [2025-03-04 15:16:28,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 362 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-04 15:16:28,405 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 204 flow [2025-03-04 15:16:28,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2025-03-04 15:16:28,406 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2025-03-04 15:16:28,407 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 204 flow [2025-03-04 15:16:28,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2025-03-04 15:16:28,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:28,407 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-04 15:16:28,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:16:28,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-04 15:16:28,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash 44146330, now seen corresponding path program 1 times [2025-03-04 15:16:28,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117542893] [2025-03-04 15:16:28,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:28,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:28,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:16:28,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:16:28,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:28,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:16:28,438 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:16:28,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:16:28,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:16:28,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:28,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:16:28,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:16:28,451 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:16:28,451 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-04 15:16:28,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-03-04 15:16:28,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-03-04 15:16:28,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-03-04 15:16:28,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-03-04 15:16:28,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-03-04 15:16:28,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-03-04 15:16:28,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-03-04 15:16:28,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-03-04 15:16:28,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-03-04 15:16:28,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-03-04 15:16:28,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-03-04 15:16:28,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-03-04 15:16:28,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:16:28,454 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 15:16:28,455 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:16:28,455 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-04 15:16:28,485 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:16:28,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 93 transitions, 214 flow [2025-03-04 15:16:28,494 INFO L124 PetriNetUnfolderBase]: 8/104 cut-off events. [2025-03-04 15:16:28,495 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-04 15:16:28,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 104 events. 8/104 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 91. Up to 5 conditions per place. [2025-03-04 15:16:28,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 93 transitions, 214 flow [2025-03-04 15:16:28,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 93 transitions, 214 flow [2025-03-04 15:16:28,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:16:28,499 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;@37c7e6ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:16:28,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-03-04 15:16:28,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:16:28,501 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-03-04 15:16:28,501 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:16:28,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:28,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:16:28,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-04 15:16:28,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1106463952, now seen corresponding path program 1 times [2025-03-04 15:16:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:28,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019394949] [2025-03-04 15:16:28,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:28,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:16:28,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:16:28,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:28,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:16:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:16:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:16:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019394949] [2025-03-04 15:16:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019394949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:16:28,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:16:28,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:16:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318227944] [2025-03-04 15:16:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:16:28,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:16:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:16:28,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:16:28,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:16:28,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2025-03-04 15:16:28,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2025-03-04 15:16:28,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:16:28,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2025-03-04 15:16:28,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:16:52,003 INFO L124 PetriNetUnfolderBase]: 357008/476783 cut-off events. [2025-03-04 15:16:52,003 INFO L125 PetriNetUnfolderBase]: For 22654/22654 co-relation queries the response was YES. [2025-03-04 15:16:52,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930325 conditions, 476783 events. 357008/476783 cut-off events. For 22654/22654 co-relation queries the response was YES. Maximal size of possible extension queue 19655. Compared 3729684 event pairs, 101149 based on Foata normal form. 18480/405688 useless extension candidates. Maximal degree in co-relation 55898. Up to 378734 conditions per place. [2025-03-04 15:16:55,032 INFO L140 encePairwiseOnDemand]: 71/93 looper letters, 87 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2025-03-04 15:16:55,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 491 flow [2025-03-04 15:16:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:16:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:16:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2025-03-04 15:16:55,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7921146953405018 [2025-03-04 15:16:55,037 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 214 flow. Second operand 3 states and 221 transitions. [2025-03-04 15:16:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 491 flow [2025-03-04 15:16:55,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 129 transitions, 479 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-04 15:16:55,051 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 269 flow [2025-03-04 15:16:55,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2025-03-04 15:16:55,051 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 2 predicate places. [2025-03-04 15:16:55,052 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 269 flow [2025-03-04 15:16:55,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2025-03-04 15:16:55,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:16:55,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:16:55,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:16:55,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-04 15:16:55,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:16:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1982686762, now seen corresponding path program 1 times [2025-03-04 15:16:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:16:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193443454] [2025-03-04 15:16:55,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:16:55,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:16:55,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:16:55,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:16:55,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:16:55,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:16:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:16:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:16:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193443454] [2025-03-04 15:16:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193443454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:16:55,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:16:55,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:16:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212367239] [2025-03-04 15:16:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:16:55,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:16:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:16:55,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:16:55,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:16:55,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 93 [2025-03-04 15:16:55,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2025-03-04 15:16:55,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:16:55,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 93 [2025-03-04 15:16:55,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand