./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longest-1.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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:48:14,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:48:14,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:48:14,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:48:14,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:48:14,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:48:14,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:48:14,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:48:14,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:48:14,864 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:48:14,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:48:14,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:48:14,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:48:14,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:48:14,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:48:14,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:48:14,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:48:14,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:48:14,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:48:14,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:48:14,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:48:14,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:48:14,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:48:14,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:48:14,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:48:14,874 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:48:14,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:48:14,875 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:48:14,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:48:14,875 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:48:14,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:48:14,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:48:14,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:48:14,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:48:14,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:48:14,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:48:14,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:48:14,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:48:14,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:48:14,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:48:14,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:48:14,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:48:14,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:48:14,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:48:14,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-19 13:48:15,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:48:15,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:48:15,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:48:15,173 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:48:15,174 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:48:15,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-19 13:48:16,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:48:16,903 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:48:16,904 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-19 13:48:16,921 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9671ffa59/fcafd3ae655e46379a2211b96c557b8b/FLAG752f61f0a [2024-11-19 13:48:17,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9671ffa59/fcafd3ae655e46379a2211b96c557b8b [2024-11-19 13:48:17,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:48:17,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:48:17,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:48:17,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:48:17,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:48:17,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34285689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17, skipping insertion in model container [2024-11-19 13:48:17,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:48:17,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:48:17,749 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:48:17,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:48:17,876 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:48:17,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17 WrapperNode [2024-11-19 13:48:17,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:48:17,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:48:17,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:48:17,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:48:17,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,916 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-19 13:48:17,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:48:17,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:48:17,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:48:17,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:48:17,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,956 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 13:48:17,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:48:17,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:48:17,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:48:17,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:48:17,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (1/1) ... [2024-11-19 13:48:17,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:48:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:18,014 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) [2024-11-19 13:48:18,018 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 [2024-11-19 13:48:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:48:18,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:48:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:48:18,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:48:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 13:48:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:48:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:48:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 13:48:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:48:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:48:18,071 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:48:18,185 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:48:18,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:48:18,347 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:48:18,347 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:48:18,443 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:48:18,444 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:48:18,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:18 BoogieIcfgContainer [2024-11-19 13:48:18,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:48:18,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:48:18,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:48:18,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:48:18,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:48:17" (1/3) ... [2024-11-19 13:48:18,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3025ae08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:18, skipping insertion in model container [2024-11-19 13:48:18,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:17" (2/3) ... [2024-11-19 13:48:18,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3025ae08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:18, skipping insertion in model container [2024-11-19 13:48:18,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:18" (3/3) ... [2024-11-19 13:48:18,458 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-19 13:48:18,476 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:48:18,477 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:48:18,477 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:48:18,530 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:18,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2024-11-19 13:48:18,604 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-19 13:48:18,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:18,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-19 13:48:18,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2024-11-19 13:48:18,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2024-11-19 13:48:18,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:18,636 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;@632d6b16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:18,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 13:48:18,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:18,651 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 13:48:18,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:18,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:18,652 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:48:18,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:18,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:18,660 INFO L85 PathProgramCache]: Analyzing trace with hash 213710731, now seen corresponding path program 1 times [2024-11-19 13:48:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:18,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671777545] [2024-11-19 13:48:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:18,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671777545] [2024-11-19 13:48:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671777545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:18,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:48:18,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478461431] [2024-11-19 13:48:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:18,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:18,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:18,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-19 13:48:18,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:18,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:18,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:19,192 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2024-11-19 13:48:19,192 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:48:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3049 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2024-11-19 13:48:19,203 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-19 13:48:19,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2024-11-19 13:48:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-19 13:48:19,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2024-11-19 13:48:19,219 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2024-11-19 13:48:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2024-11-19 13:48:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:19,226 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2024-11-19 13:48:19,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-19 13:48:19,232 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-19 13:48:19,233 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2024-11-19 13:48:19,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-19 13:48:19,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:19,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:48:19,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:48:19,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:19,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 213710732, now seen corresponding path program 1 times [2024-11-19 13:48:19,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:19,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754422845] [2024-11-19 13:48:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:19,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:19,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:19,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754422845] [2024-11-19 13:48:19,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754422845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:19,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:19,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:48:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866936273] [2024-11-19 13:48:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:19,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:19,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:19,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-19 13:48:19,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:19,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:19,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:19,469 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2024-11-19 13:48:19,470 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-19 13:48:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3026 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2024-11-19 13:48:19,476 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-19 13:48:19,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2024-11-19 13:48:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-19 13:48:19,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-19 13:48:19,480 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2024-11-19 13:48:19,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2024-11-19 13:48:19,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:19,483 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2024-11-19 13:48:19,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-19 13:48:19,484 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-19 13:48:19,485 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2024-11-19 13:48:19,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-19 13:48:19,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:19,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:19,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:48:19,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:19,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash -782409202, now seen corresponding path program 1 times [2024-11-19 13:48:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611765154] [2024-11-19 13:48:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:19,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:19,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:19,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611765154] [2024-11-19 13:48:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611765154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:19,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793471307] [2024-11-19 13:48:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:19,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:19,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 13:48:19,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-19 13:48:19,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:19,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 13:48:19,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:19,841 INFO L124 PetriNetUnfolderBase]: 661/1318 cut-off events. [2024-11-19 13:48:19,841 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-19 13:48:19,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 1318 events. 661/1318 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8108 event pairs, 260 based on Foata normal form. 64/1231 useless extension candidates. Maximal degree in co-relation 2730. Up to 721 conditions per place. [2024-11-19 13:48:19,854 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-19 13:48:19,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2024-11-19 13:48:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 13:48:19,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-19 13:48:19,858 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2024-11-19 13:48:19,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2024-11-19 13:48:19,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:19,862 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2024-11-19 13:48:19,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-19 13:48:19,864 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-19 13:48:19,864 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2024-11-19 13:48:19,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-19 13:48:19,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:19,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:19,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:48:19,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:19,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash -790923469, now seen corresponding path program 1 times [2024-11-19 13:48:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555893053] [2024-11-19 13:48:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:19,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555893053] [2024-11-19 13:48:19,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555893053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:48:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805184347] [2024-11-19 13:48:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:19,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:19,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:19,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-19 13:48:19,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:19,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:19,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:20,095 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2024-11-19 13:48:20,095 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-11-19 13:48:20,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6779 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2024-11-19 13:48:20,103 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-19 13:48:20,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2024-11-19 13:48:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-19 13:48:20,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.78125 [2024-11-19 13:48:20,107 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2024-11-19 13:48:20,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2024-11-19 13:48:20,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:20,111 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2024-11-19 13:48:20,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-19 13:48:20,112 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-11-19 13:48:20,113 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2024-11-19 13:48:20,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-19 13:48:20,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:20,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:20,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:48:20,115 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:20,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -790923468, now seen corresponding path program 1 times [2024-11-19 13:48:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663553919] [2024-11-19 13:48:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:20,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:20,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663553919] [2024-11-19 13:48:20,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663553919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:20,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:20,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:48:20,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291884804] [2024-11-19 13:48:20,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:20,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:20,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:20,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-19 13:48:20,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:20,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:20,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:20,300 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2024-11-19 13:48:20,301 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-11-19 13:48:20,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6801 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2024-11-19 13:48:20,309 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-11-19 13:48:20,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2024-11-19 13:48:20,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-19 13:48:20,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-11-19 13:48:20,313 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2024-11-19 13:48:20,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2024-11-19 13:48:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:20,316 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2024-11-19 13:48:20,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-11-19 13:48:20,318 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2024-11-19 13:48:20,318 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2024-11-19 13:48:20,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-19 13:48:20,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:20,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:20,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:48:20,319 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:20,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash 131766550, now seen corresponding path program 1 times [2024-11-19 13:48:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073691988] [2024-11-19 13:48:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:20,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:20,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073691988] [2024-11-19 13:48:20,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073691988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:20,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:20,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:20,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980131441] [2024-11-19 13:48:20,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:20,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:20,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 13:48:20,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-19 13:48:20,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:20,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 13:48:20,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:20,605 INFO L124 PetriNetUnfolderBase]: 661/1357 cut-off events. [2024-11-19 13:48:20,605 INFO L125 PetriNetUnfolderBase]: For 1033/1149 co-relation queries the response was YES. [2024-11-19 13:48:20,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1357 events. 661/1357 cut-off events. For 1033/1149 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8942 event pairs, 378 based on Foata normal form. 87/1394 useless extension candidates. Maximal degree in co-relation 3363. Up to 853 conditions per place. [2024-11-19 13:48:20,618 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-19 13:48:20,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2024-11-19 13:48:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-19 13:48:20,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2024-11-19 13:48:20,620 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2024-11-19 13:48:20,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2024-11-19 13:48:20,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:20,624 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2024-11-19 13:48:20,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-11-19 13:48:20,625 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2024-11-19 13:48:20,625 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2024-11-19 13:48:20,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-19 13:48:20,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:20,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:20,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:48:20,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:20,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1215453567, now seen corresponding path program 1 times [2024-11-19 13:48:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:20,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242148984] [2024-11-19 13:48:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242148984] [2024-11-19 13:48:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242148984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:20,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:20,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:20,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123813684] [2024-11-19 13:48:20,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:20,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:20,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:20,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:20,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:20,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:20,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:20,905 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2024-11-19 13:48:20,906 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2024-11-19 13:48:20,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9415 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2024-11-19 13:48:20,917 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-11-19 13:48:20,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2024-11-19 13:48:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:48:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:48:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-19 13:48:20,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-11-19 13:48:20,918 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2024-11-19 13:48:20,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2024-11-19 13:48:20,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:20,922 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2024-11-19 13:48:20,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-19 13:48:20,923 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2024-11-19 13:48:20,923 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2024-11-19 13:48:20,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:20,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:20,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:20,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:48:20,924 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:20,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1197405986, now seen corresponding path program 1 times [2024-11-19 13:48:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:20,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442497757] [2024-11-19 13:48:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:20,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442497757] [2024-11-19 13:48:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442497757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:20,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:20,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:20,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326005461] [2024-11-19 13:48:20,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:20,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:20,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:20,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:20,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:20,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:20,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:21,174 INFO L124 PetriNetUnfolderBase]: 608/1500 cut-off events. [2024-11-19 13:48:21,175 INFO L125 PetriNetUnfolderBase]: For 1768/1889 co-relation queries the response was YES. [2024-11-19 13:48:21,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 1500 events. 608/1500 cut-off events. For 1768/1889 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10885 event pairs, 81 based on Foata normal form. 68/1532 useless extension candidates. Maximal degree in co-relation 4058. Up to 509 conditions per place. [2024-11-19 13:48:21,184 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-11-19 13:48:21,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2024-11-19 13:48:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:48:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:48:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-19 13:48:21,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-19 13:48:21,186 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2024-11-19 13:48:21,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2024-11-19 13:48:21,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:21,191 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2024-11-19 13:48:21,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-19 13:48:21,192 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2024-11-19 13:48:21,193 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2024-11-19 13:48:21,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:21,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:21,193 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:21,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:48:21,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:21,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -523195646, now seen corresponding path program 1 times [2024-11-19 13:48:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:21,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47690267] [2024-11-19 13:48:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:21,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47690267] [2024-11-19 13:48:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47690267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229836138] [2024-11-19 13:48:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:21,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:21,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:21,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:21,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:21,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:21,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:21,450 INFO L124 PetriNetUnfolderBase]: 710/1711 cut-off events. [2024-11-19 13:48:21,451 INFO L125 PetriNetUnfolderBase]: For 3112/3238 co-relation queries the response was YES. [2024-11-19 13:48:21,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 1711 events. 710/1711 cut-off events. For 3112/3238 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12340 event pairs, 142 based on Foata normal form. 78/1738 useless extension candidates. Maximal degree in co-relation 4973. Up to 720 conditions per place. [2024-11-19 13:48:21,465 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-11-19 13:48:21,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 643 flow [2024-11-19 13:48:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:48:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:48:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-19 13:48:21,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-11-19 13:48:21,467 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 5 states and 122 transitions. [2024-11-19 13:48:21,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 643 flow [2024-11-19 13:48:21,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 630 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:21,477 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 427 flow [2024-11-19 13:48:21,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-19 13:48:21,478 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2024-11-19 13:48:21,478 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 427 flow [2024-11-19 13:48:21,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:21,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:21,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:21,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:48:21,479 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:21,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1197399147, now seen corresponding path program 1 times [2024-11-19 13:48:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:21,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199250520] [2024-11-19 13:48:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:21,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:21,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:21,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199250520] [2024-11-19 13:48:21,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199250520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:21,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396602309] [2024-11-19 13:48:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:21,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:21,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:21,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:21,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:21,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:21,689 INFO L124 PetriNetUnfolderBase]: 558/1313 cut-off events. [2024-11-19 13:48:21,689 INFO L125 PetriNetUnfolderBase]: For 3780/3938 co-relation queries the response was YES. [2024-11-19 13:48:21,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3835 conditions, 1313 events. 558/1313 cut-off events. For 3780/3938 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8784 event pairs, 418 based on Foata normal form. 129/1361 useless extension candidates. Maximal degree in co-relation 3801. Up to 934 conditions per place. [2024-11-19 13:48:21,699 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 31 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-19 13:48:21,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 46 transitions, 352 flow [2024-11-19 13:48:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-19 13:48:21,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-19 13:48:21,701 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 427 flow. Second operand 3 states and 60 transitions. [2024-11-19 13:48:21,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 46 transitions, 352 flow [2024-11-19 13:48:21,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 46 transitions, 322 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:21,708 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 260 flow [2024-11-19 13:48:21,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2024-11-19 13:48:21,709 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2024-11-19 13:48:21,710 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 260 flow [2024-11-19 13:48:21,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-19 13:48:21,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:21,710 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:21,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:48:21,710 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:21,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash -516534008, now seen corresponding path program 1 times [2024-11-19 13:48:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914926294] [2024-11-19 13:48:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:21,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914926294] [2024-11-19 13:48:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914926294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627959369] [2024-11-19 13:48:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:21,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:21,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:21,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:21,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:48:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:21,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:21,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:21,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:21,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627959369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:21,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:21,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:48:21,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651885683] [2024-11-19 13:48:21,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:21,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:48:21,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:48:21,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:48:21,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-19 13:48:21,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-19 13:48:21,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:21,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-19 13:48:21,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:22,186 INFO L124 PetriNetUnfolderBase]: 1036/2005 cut-off events. [2024-11-19 13:48:22,187 INFO L125 PetriNetUnfolderBase]: For 2333/2478 co-relation queries the response was YES. [2024-11-19 13:48:22,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2005 events. 1036/2005 cut-off events. For 2333/2478 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13150 event pairs, 145 based on Foata normal form. 122/2005 useless extension candidates. Maximal degree in co-relation 5660. Up to 785 conditions per place. [2024-11-19 13:48:22,210 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-11-19 13:48:22,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 525 flow [2024-11-19 13:48:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-19 13:48:22,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-19 13:48:22,214 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 260 flow. Second operand 4 states and 78 transitions. [2024-11-19 13:48:22,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 525 flow [2024-11-19 13:48:22,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:22,220 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2024-11-19 13:48:22,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-11-19 13:48:22,222 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-11-19 13:48:22,222 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2024-11-19 13:48:22,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-19 13:48:22,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:22,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:22,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:48:22,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 13:48:22,427 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:22,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1167315176, now seen corresponding path program 1 times [2024-11-19 13:48:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998353519] [2024-11-19 13:48:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998353519] [2024-11-19 13:48:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998353519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502541447] [2024-11-19 13:48:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:22,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:22,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-19 13:48:22,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:22,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:22,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-19 13:48:22,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:22,723 INFO L124 PetriNetUnfolderBase]: 883/1891 cut-off events. [2024-11-19 13:48:22,724 INFO L125 PetriNetUnfolderBase]: For 2718/2799 co-relation queries the response was YES. [2024-11-19 13:48:22,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 1891 events. 883/1891 cut-off events. For 2718/2799 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12757 event pairs, 246 based on Foata normal form. 108/1971 useless extension candidates. Maximal degree in co-relation 5486. Up to 726 conditions per place. [2024-11-19 13:48:22,737 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-11-19 13:48:22,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 534 flow [2024-11-19 13:48:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-19 13:48:22,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-19 13:48:22,739 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2024-11-19 13:48:22,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 534 flow [2024-11-19 13:48:22,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:22,748 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2024-11-19 13:48:22,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-11-19 13:48:22,751 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-11-19 13:48:22,751 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2024-11-19 13:48:22,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:22,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:22,752 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:22,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:48:22,753 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:22,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash 430599243, now seen corresponding path program 1 times [2024-11-19 13:48:22,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:22,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022771113] [2024-11-19 13:48:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:22,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:22,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022771113] [2024-11-19 13:48:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022771113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921349819] [2024-11-19 13:48:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:22,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:22,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:22,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:22,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:48:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:22,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:48:22,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:22,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921349819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:22,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:48:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407680617] [2024-11-19 13:48:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:22,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:22,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:22,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 13:48:22,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-19 13:48:22,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:22,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 13:48:22,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:23,196 INFO L124 PetriNetUnfolderBase]: 845/1729 cut-off events. [2024-11-19 13:48:23,196 INFO L125 PetriNetUnfolderBase]: For 3284/3338 co-relation queries the response was YES. [2024-11-19 13:48:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 1729 events. 845/1729 cut-off events. For 3284/3338 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11376 event pairs, 70 based on Foata normal form. 123/1774 useless extension candidates. Maximal degree in co-relation 5148. Up to 562 conditions per place. [2024-11-19 13:48:23,207 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 71 selfloop transitions, 6 changer transitions 1/87 dead transitions. [2024-11-19 13:48:23,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 686 flow [2024-11-19 13:48:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:48:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:48:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-19 13:48:23,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:48:23,208 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 6 states and 116 transitions. [2024-11-19 13:48:23,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 686 flow [2024-11-19 13:48:23,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:23,214 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 271 flow [2024-11-19 13:48:23,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2024-11-19 13:48:23,215 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2024-11-19 13:48:23,215 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 271 flow [2024-11-19 13:48:23,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-19 13:48:23,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:23,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:23,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:48:23,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 13:48:23,416 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:23,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1787995972, now seen corresponding path program 1 times [2024-11-19 13:48:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:23,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621816777] [2024-11-19 13:48:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:23,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621816777] [2024-11-19 13:48:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621816777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586362367] [2024-11-19 13:48:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:23,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:23,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:23,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:48:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:23,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:23,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:23,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:23,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586362367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:23,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 13:48:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627964446] [2024-11-19 13:48:23,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:23,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:48:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:48:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:23,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:23,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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) [2024-11-19 13:48:23,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:23,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:23,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:23,864 INFO L124 PetriNetUnfolderBase]: 747/1715 cut-off events. [2024-11-19 13:48:23,864 INFO L125 PetriNetUnfolderBase]: For 3566/3614 co-relation queries the response was YES. [2024-11-19 13:48:23,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 1715 events. 747/1715 cut-off events. For 3566/3614 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10727 event pairs, 71 based on Foata normal form. 135/1829 useless extension candidates. Maximal degree in co-relation 5208. Up to 289 conditions per place. [2024-11-19 13:48:23,875 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2024-11-19 13:48:23,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 653 flow [2024-11-19 13:48:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-11-19 13:48:23,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-19 13:48:23,877 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 271 flow. Second operand 7 states and 160 transitions. [2024-11-19 13:48:23,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 653 flow [2024-11-19 13:48:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 626 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-19 13:48:23,884 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 375 flow [2024-11-19 13:48:23,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-19 13:48:23,885 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-11-19 13:48:23,885 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 375 flow [2024-11-19 13:48:23,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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) [2024-11-19 13:48:23,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:23,886 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:23,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:24,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:24,087 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:24,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 463674896, now seen corresponding path program 1 times [2024-11-19 13:48:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695278048] [2024-11-19 13:48:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695278048] [2024-11-19 13:48:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695278048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:24,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:24,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111379083] [2024-11-19 13:48:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:24,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:24,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-19 13:48:24,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-19 13:48:24,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:24,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-19 13:48:24,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:24,402 INFO L124 PetriNetUnfolderBase]: 1190/2263 cut-off events. [2024-11-19 13:48:24,402 INFO L125 PetriNetUnfolderBase]: For 5912/5957 co-relation queries the response was YES. [2024-11-19 13:48:24,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7489 conditions, 2263 events. 1190/2263 cut-off events. For 5912/5957 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13455 event pairs, 275 based on Foata normal form. 153/2382 useless extension candidates. Maximal degree in co-relation 7457. Up to 893 conditions per place. [2024-11-19 13:48:24,418 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-11-19 13:48:24,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 740 flow [2024-11-19 13:48:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-19 13:48:24,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-11-19 13:48:24,419 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 375 flow. Second operand 4 states and 74 transitions. [2024-11-19 13:48:24,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 740 flow [2024-11-19 13:48:24,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 705 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:24,430 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2024-11-19 13:48:24,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-19 13:48:24,430 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-11-19 13:48:24,431 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2024-11-19 13:48:24,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-19 13:48:24,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:24,431 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:24,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 13:48:24,431 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:24,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1702380340, now seen corresponding path program 1 times [2024-11-19 13:48:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:24,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656562530] [2024-11-19 13:48:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656562530] [2024-11-19 13:48:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656562530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523396806] [2024-11-19 13:48:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:24,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:24,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:24,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:48:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:24,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:48:24,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:24,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:24,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523396806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:24,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:24,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 13:48:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937169414] [2024-11-19 13:48:24,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:24,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:48:24,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:48:24,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:48:24,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:24,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 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) [2024-11-19 13:48:24,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:24,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:24,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:25,123 INFO L124 PetriNetUnfolderBase]: 972/2189 cut-off events. [2024-11-19 13:48:25,123 INFO L125 PetriNetUnfolderBase]: For 7431/7449 co-relation queries the response was YES. [2024-11-19 13:48:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 2189 events. 972/2189 cut-off events. For 7431/7449 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13043 event pairs, 35 based on Foata normal form. 120/2306 useless extension candidates. Maximal degree in co-relation 6997. Up to 277 conditions per place. [2024-11-19 13:48:25,137 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2024-11-19 13:48:25,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 946 flow [2024-11-19 13:48:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 13:48:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 13:48:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2024-11-19 13:48:25,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-11-19 13:48:25,139 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2024-11-19 13:48:25,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 946 flow [2024-11-19 13:48:25,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 909 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:25,150 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2024-11-19 13:48:25,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2024-11-19 13:48:25,151 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2024-11-19 13:48:25,151 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2024-11-19 13:48:25,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 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) [2024-11-19 13:48:25,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:25,153 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:25,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:25,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 13:48:25,354 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:25,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash -550526186, now seen corresponding path program 1 times [2024-11-19 13:48:25,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:25,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861819163] [2024-11-19 13:48:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:25,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861819163] [2024-11-19 13:48:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861819163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958991141] [2024-11-19 13:48:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:25,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:25,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:25,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:48:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:25,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:48:25,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:25,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:25,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958991141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:25,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:25,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-19 13:48:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186153402] [2024-11-19 13:48:25,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:25,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 13:48:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 13:48:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-19 13:48:25,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:25,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 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) [2024-11-19 13:48:25,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:25,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:25,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:26,382 INFO L124 PetriNetUnfolderBase]: 1422/3164 cut-off events. [2024-11-19 13:48:26,383 INFO L125 PetriNetUnfolderBase]: For 11451/11475 co-relation queries the response was YES. [2024-11-19 13:48:26,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 3164 events. 1422/3164 cut-off events. For 11451/11475 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19052 event pairs, 71 based on Foata normal form. 114/3263 useless extension candidates. Maximal degree in co-relation 10098. Up to 391 conditions per place. [2024-11-19 13:48:26,406 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2024-11-19 13:48:26,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1222 flow [2024-11-19 13:48:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 13:48:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 13:48:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2024-11-19 13:48:26,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-19 13:48:26,408 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2024-11-19 13:48:26,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1222 flow [2024-11-19 13:48:26,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1209 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:26,423 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2024-11-19 13:48:26,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2024-11-19 13:48:26,424 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2024-11-19 13:48:26,424 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2024-11-19 13:48:26,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 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) [2024-11-19 13:48:26,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:26,425 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:26,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 13:48:26,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 13:48:26,626 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:26,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1669441654, now seen corresponding path program 2 times [2024-11-19 13:48:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:26,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739154300] [2024-11-19 13:48:26,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:26,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:26,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739154300] [2024-11-19 13:48:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739154300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588109416] [2024-11-19 13:48:26,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:26,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:26,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:26,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:48:26,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:26,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:26,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 13:48:26,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:27,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:27,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588109416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:27,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:27,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-19 13:48:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289168624] [2024-11-19 13:48:27,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:27,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 13:48:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 13:48:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-19 13:48:27,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:27,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 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) [2024-11-19 13:48:27,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:27,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:27,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:28,679 INFO L124 PetriNetUnfolderBase]: 2412/5357 cut-off events. [2024-11-19 13:48:28,679 INFO L125 PetriNetUnfolderBase]: For 28181/28199 co-relation queries the response was YES. [2024-11-19 13:48:28,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 5357 events. 2412/5357 cut-off events. For 28181/28199 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 31928 event pairs, 35 based on Foata normal form. 216/5570 useless extension candidates. Maximal degree in co-relation 17376. Up to 709 conditions per place. [2024-11-19 13:48:28,710 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 158 selfloop transitions, 41 changer transitions 49/260 dead transitions. [2024-11-19 13:48:28,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 260 transitions, 2117 flow [2024-11-19 13:48:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 13:48:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 13:48:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 627 transitions. [2024-11-19 13:48:28,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6997767857142857 [2024-11-19 13:48:28,713 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 28 states and 627 transitions. [2024-11-19 13:48:28,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 260 transitions, 2117 flow [2024-11-19 13:48:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 2037 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:28,749 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 840 flow [2024-11-19 13:48:28,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=840, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2024-11-19 13:48:28,751 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2024-11-19 13:48:28,751 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 840 flow [2024-11-19 13:48:28,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 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) [2024-11-19 13:48:28,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:28,752 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:28,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:48:28,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 13:48:28,953 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:28,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1964422650, now seen corresponding path program 2 times [2024-11-19 13:48:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:28,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137520436] [2024-11-19 13:48:28,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:28,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:28,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:29,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137520436] [2024-11-19 13:48:29,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137520436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:29,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417304962] [2024-11-19 13:48:29,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:29,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:29,598 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:29,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:48:29,691 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:29,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:29,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 13:48:29,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:29,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417304962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:30,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:30,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2024-11-19 13:48:30,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988048432] [2024-11-19 13:48:30,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:30,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 13:48:30,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 13:48:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 13:48:30,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 13:48:30,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 840 flow. Second operand has 48 states, 48 states have (on average 16.083333333333332) internal successors, (772), 48 states have internal predecessors, (772), 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) [2024-11-19 13:48:30,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:30,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 13:48:30,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:33,462 INFO L124 PetriNetUnfolderBase]: 4302/9500 cut-off events. [2024-11-19 13:48:33,462 INFO L125 PetriNetUnfolderBase]: For 80805/80829 co-relation queries the response was YES. [2024-11-19 13:48:33,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30896 conditions, 9500 events. 4302/9500 cut-off events. For 80805/80829 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 56827 event pairs, 71 based on Foata normal form. 402/9887 useless extension candidates. Maximal degree in co-relation 30836. Up to 1255 conditions per place. [2024-11-19 13:48:33,529 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 252 selfloop transitions, 72 changer transitions 89/425 dead transitions. [2024-11-19 13:48:33,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 425 transitions, 3531 flow [2024-11-19 13:48:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-19 13:48:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-19 13:48:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1056 transitions. [2024-11-19 13:48:33,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2024-11-19 13:48:33,538 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 840 flow. Second operand 47 states and 1056 transitions. [2024-11-19 13:48:33,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 425 transitions, 3531 flow [2024-11-19 13:48:33,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 425 transitions, 3385 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-19 13:48:33,646 INFO L231 Difference]: Finished difference. Result has 197 places, 108 transitions, 1346 flow [2024-11-19 13:48:33,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1346, PETRI_PLACES=197, PETRI_TRANSITIONS=108} [2024-11-19 13:48:33,647 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2024-11-19 13:48:33,647 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 108 transitions, 1346 flow [2024-11-19 13:48:33,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 16.083333333333332) internal successors, (772), 48 states have internal predecessors, (772), 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) [2024-11-19 13:48:33,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:33,648 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:33,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:33,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:33,854 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:33,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1850068462, now seen corresponding path program 3 times [2024-11-19 13:48:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367040323] [2024-11-19 13:48:33,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:48:33,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:34,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-19 13:48:34,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 0 proven. 2291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:35,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367040323] [2024-11-19 13:48:35,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367040323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131367450] [2024-11-19 13:48:35,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:48:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:35,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:35,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:48:35,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-19 13:48:35,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:35,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 13:48:35,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 2288 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 13:48:37,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131367450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:37,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [45] total 90 [2024-11-19 13:48:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491217563] [2024-11-19 13:48:37,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:37,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-19 13:48:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-19 13:48:37,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=6908, Unknown=0, NotChecked=0, Total=8010 [2024-11-19 13:48:37,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-19 13:48:37,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 108 transitions, 1346 flow. Second operand has 45 states, 45 states have (on average 13.044444444444444) internal successors, (587), 45 states have internal predecessors, (587), 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) [2024-11-19 13:48:37,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:37,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-19 13:48:37,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:57,526 INFO L124 PetriNetUnfolderBase]: 57698/100737 cut-off events. [2024-11-19 13:48:57,526 INFO L125 PetriNetUnfolderBase]: For 263341/263341 co-relation queries the response was YES. [2024-11-19 13:48:58,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334089 conditions, 100737 events. 57698/100737 cut-off events. For 263341/263341 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 840538 event pairs, 505 based on Foata normal form. 728/101455 useless extension candidates. Maximal degree in co-relation 334016. Up to 15435 conditions per place. [2024-11-19 13:48:59,005 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 1694/1694 dead transitions. [2024-11-19 13:48:59,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1694 transitions, 21720 flow [2024-11-19 13:48:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-19 13:48:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-19 13:48:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 870 transitions. [2024-11-19 13:48:59,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322674418604651 [2024-11-19 13:48:59,009 INFO L175 Difference]: Start difference. First operand has 197 places, 108 transitions, 1346 flow. Second operand 43 states and 870 transitions. [2024-11-19 13:48:59,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1694 transitions, 21720 flow [2024-11-19 13:49:00,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1694 transitions, 15210 flow, removed 42 selfloop flow, removed 73 redundant places. [2024-11-19 13:49:00,553 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2024-11-19 13:49:00,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2024-11-19 13:49:00,553 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 125 predicate places. [2024-11-19 13:49:00,554 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2024-11-19 13:49:00,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 13.044444444444444) internal successors, (587), 45 states have internal predecessors, (587), 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) [2024-11-19 13:49:00,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-19 13:49:00,559 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-19 13:49:00,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-19 13:49:00,561 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-19 13:49:00,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 13:49:00,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:49:00,763 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:00,770 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 13:49:00,770 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 13:49:00,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:49:00 BasicIcfg [2024-11-19 13:49:00,775 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 13:49:00,775 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 13:49:00,775 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 13:49:00,775 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 13:49:00,776 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:18" (3/4) ... [2024-11-19 13:49:00,777 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 13:49:00,781 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-19 13:49:00,781 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-19 13:49:00,784 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-11-19 13:49:00,784 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-19 13:49:00,784 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 13:49:00,785 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 13:49:00,868 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 13:49:00,868 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 13:49:00,868 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 13:49:00,870 INFO L158 Benchmark]: Toolchain (without parser) took 43637.18ms. Allocated memory was 190.8MB in the beginning and 12.5GB in the end (delta: 12.3GB). Free memory was 133.9MB in the beginning and 10.6GB in the end (delta: -10.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-11-19 13:49:00,870 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 96.5MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 13:49:00,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.45ms. Allocated memory is still 190.8MB. Free memory was 133.5MB in the beginning and 155.5MB in the end (delta: -22.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-19 13:49:00,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.04ms. Allocated memory is still 190.8MB. Free memory was 155.5MB in the beginning and 153.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 13:49:00,871 INFO L158 Benchmark]: Boogie Preprocessor took 49.76ms. Allocated memory is still 190.8MB. Free memory was 153.4MB in the beginning and 151.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 13:49:00,871 INFO L158 Benchmark]: RCFGBuilder took 471.43ms. Allocated memory is still 190.8MB. Free memory was 151.3MB in the beginning and 130.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 13:49:00,871 INFO L158 Benchmark]: TraceAbstraction took 42325.37ms. Allocated memory was 190.8MB in the beginning and 12.5GB in the end (delta: 12.3GB). Free memory was 129.4MB in the beginning and 10.6GB in the end (delta: -10.4GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-11-19 13:49:00,871 INFO L158 Benchmark]: Witness Printer took 93.39ms. Allocated memory is still 12.5GB. Free memory was 10.6GB in the beginning and 10.6GB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 13:49:00,873 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16ms. Allocated memory is still 96.5MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.45ms. Allocated memory is still 190.8MB. Free memory was 133.5MB in the beginning and 155.5MB in the end (delta: -22.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.04ms. Allocated memory is still 190.8MB. Free memory was 155.5MB in the beginning and 153.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.76ms. Allocated memory is still 190.8MB. Free memory was 153.4MB in the beginning and 151.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.43ms. Allocated memory is still 190.8MB. Free memory was 151.3MB in the beginning and 130.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 42325.37ms. Allocated memory was 190.8MB in the beginning and 12.5GB in the end (delta: 12.3GB). Free memory was 129.4MB in the beginning and 10.6GB in the end (delta: -10.4GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 93.39ms. Allocated memory is still 12.5GB. Free memory was 10.6GB in the beginning and 10.6GB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 18 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: 42.2s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 32.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3486 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3414 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 239 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5075 IncrementalHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 23 mSDtfsCounter, 5075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5619 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1346occurred in iteration=19, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 1342 ConstructedInterpolants, 0 QuantifiedInterpolants, 3944 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1550 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 33 InterpolantComputations, 15 PerfectInterpolantSequences, 2309/6804 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 13:49:00,903 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