./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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-longer-2.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:04:50,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:04:51,061 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:04:51,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:04:51,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:04:51,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:04:51,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:04:51,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:04:51,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:04:51,090 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:04:51,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:04:51,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:04:51,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:04:51,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:04:51,094 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:04:51,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:04:51,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:04:51,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:04:51,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:04:51,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:04:51,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:04:51,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:04:51,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:04:51,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:04:51,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:04:51,099 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:04:51,099 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:04:51,099 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:04:51,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:04:51,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:04:51,100 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:04:51,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:04:51,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:04:51,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:04:51,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:04:51,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:04:51,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:04:51,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:04:51,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:04:51,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:04:51,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:04:51,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:04:51,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:04:51,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:04:51,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2024-11-10 22:04:51,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:04:51,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:04:51,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:04:51,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:04:51,368 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:04:51,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-10 22:04:52,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:04:53,028 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:04:53,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-10 22:04:53,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314f4d0e4/e855710160684127921ca5904078396d/FLAGd9f0fd470 [2024-11-10 22:04:53,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314f4d0e4/e855710160684127921ca5904078396d [2024-11-10 22:04:53,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:04:53,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:04:53,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:04:53,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:04:53,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:04:53,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2248b287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53, skipping insertion in model container [2024-11-10 22:04:53,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,111 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:04:53,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:04:53,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:04:53,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:04:53,543 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:04:53,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53 WrapperNode [2024-11-10 22:04:53,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:04:53,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:04:53,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:04:53,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:04:53,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,588 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-10 22:04:53,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:04:53,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:04:53,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:04:53,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:04:53,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,624 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]. [2024-11-10 22:04:53,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,633 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:04:53,644 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:04:53,644 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:04:53,644 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:04:53,645 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (1/1) ... [2024-11-10 22:04:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:04:53,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:53,684 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) [2024-11-10 22:04:53,691 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 [2024-11-10 22:04:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:04:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:04:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:04:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:04:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:04:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:04:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:04:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:04:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:04:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:04:53,738 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:04:53,881 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:04:53,884 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:04:54,048 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:04:54,049 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:04:54,227 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:04:54,227 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:04:54,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:54 BoogieIcfgContainer [2024-11-10 22:04:54,228 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:04:54,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:04:54,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:04:54,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:04:54,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:04:53" (1/3) ... [2024-11-10 22:04:54,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13962063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:04:54, skipping insertion in model container [2024-11-10 22:04:54,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:53" (2/3) ... [2024-11-10 22:04:54,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13962063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:04:54, skipping insertion in model container [2024-11-10 22:04:54,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:54" (3/3) ... [2024-11-10 22:04:54,238 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-11-10 22:04:54,255 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:04:54,256 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 22:04:54,256 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:04:54,310 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:04:54,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 84 flow [2024-11-10 22:04:54,375 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-10 22:04:54,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:04:54,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 4/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-10 22:04:54,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 84 flow [2024-11-10 22:04:54,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 78 flow [2024-11-10 22:04:54,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:04:54,404 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;@3a90f258, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:04:54,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-10 22:04:54,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:04:54,410 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-10 22:04:54,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:04:54,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:54,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:04:54,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:54,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1662760112, now seen corresponding path program 1 times [2024-11-10 22:04:54,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444030270] [2024-11-10 22:04:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:54,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444030270] [2024-11-10 22:04:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444030270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:54,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:04:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652683035] [2024-11-10 22:04:54,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:54,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:04:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:04:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:04:54,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:54,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-11-10 22:04:54,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:54,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:54,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:54,930 INFO L124 PetriNetUnfolderBase]: 510/1020 cut-off events. [2024-11-10 22:04:54,931 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 22:04:54,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 1020 events. 510/1020 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6199 event pairs, 208 based on Foata normal form. 107/847 useless extension candidates. Maximal degree in co-relation 1827. Up to 421 conditions per place. [2024-11-10 22:04:54,947 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-10 22:04:54,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 170 flow [2024-11-10 22:04:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-10 22:04:54,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2024-11-10 22:04:54,963 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 78 flow. Second operand 3 states and 87 transitions. [2024-11-10 22:04:54,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 170 flow [2024-11-10 22:04:54,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:54,972 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 94 flow [2024-11-10 22:04:54,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-11-10 22:04:54,977 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-10 22:04:54,978 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 94 flow [2024-11-10 22:04:54,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-11-10 22:04:54,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:54,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:04:54,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:04:54,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:54,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:54,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1662760113, now seen corresponding path program 1 times [2024-11-10 22:04:54,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:54,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165817561] [2024-11-10 22:04:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:54,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:55,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165817561] [2024-11-10 22:04:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165817561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:55,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:55,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:04:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637620207] [2024-11-10 22:04:55,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:55,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:04:55,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:55,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:04:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:04:55,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:55,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-11-10 22:04:55,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:55,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:55,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:55,258 INFO L124 PetriNetUnfolderBase]: 499/1056 cut-off events. [2024-11-10 22:04:55,258 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-10 22:04:55,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 1056 events. 499/1056 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6264 event pairs, 182 based on Foata normal form. 24/915 useless extension candidates. Maximal degree in co-relation 2028. Up to 466 conditions per place. [2024-11-10 22:04:55,266 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 31 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-11-10 22:04:55,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 194 flow [2024-11-10 22:04:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-10 22:04:55,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-11-10 22:04:55,270 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-11-10 22:04:55,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 194 flow [2024-11-10 22:04:55,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:55,274 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2024-11-10 22:04:55,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-10 22:04:55,277 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-11-10 22:04:55,277 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2024-11-10 22:04:55,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-11-10 22:04:55,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:55,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:55,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:04:55,278 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:55,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -447665372, now seen corresponding path program 1 times [2024-11-10 22:04:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:55,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494543640] [2024-11-10 22:04:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494543640] [2024-11-10 22:04:55,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494543640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:55,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:55,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:04:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353548588] [2024-11-10 22:04:55,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:55,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:04:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:04:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:04:55,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:55,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-10 22:04:55,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:55,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:55,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:55,577 INFO L124 PetriNetUnfolderBase]: 743/1706 cut-off events. [2024-11-10 22:04:55,579 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-11-10 22:04:55,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 1706 events. 743/1706 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11676 event pairs, 298 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 3295. Up to 647 conditions per place. [2024-11-10 22:04:55,591 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-10 22:04:55,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 257 flow [2024-11-10 22:04:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-10 22:04:55,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2024-11-10 22:04:55,596 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-10 22:04:55,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 257 flow [2024-11-10 22:04:55,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:55,600 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 126 flow [2024-11-10 22:04:55,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-10 22:04:55,602 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-11-10 22:04:55,602 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 126 flow [2024-11-10 22:04:55,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-10 22:04:55,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:55,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:55,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:04:55,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:55,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash -447665371, now seen corresponding path program 1 times [2024-11-10 22:04:55,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:55,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236147225] [2024-11-10 22:04:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:55,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236147225] [2024-11-10 22:04:55,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236147225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:55,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:55,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:04:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976864729] [2024-11-10 22:04:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:55,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:04:55,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:04:55,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:04:55,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:55,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-10 22:04:55,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:55,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:55,847 INFO L124 PetriNetUnfolderBase]: 717/1780 cut-off events. [2024-11-10 22:04:55,848 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-11-10 22:04:55,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 1780 events. 717/1780 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12773 event pairs, 260 based on Foata normal form. 38/1618 useless extension candidates. Maximal degree in co-relation 3644. Up to 719 conditions per place. [2024-11-10 22:04:55,859 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-10 22:04:55,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 276 flow [2024-11-10 22:04:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-10 22:04:55,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-10 22:04:55,864 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 126 flow. Second operand 3 states and 84 transitions. [2024-11-10 22:04:55,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 276 flow [2024-11-10 22:04:55,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:55,868 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 140 flow [2024-11-10 22:04:55,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-10 22:04:55,869 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-11-10 22:04:55,870 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 140 flow [2024-11-10 22:04:55,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-10 22:04:55,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:55,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:55,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:04:55,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:55,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash 184641588, now seen corresponding path program 1 times [2024-11-10 22:04:55,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:55,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502876830] [2024-11-10 22:04:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:55,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502876830] [2024-11-10 22:04:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502876830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:55,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:55,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137277240] [2024-11-10 22:04:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:55,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:55,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-10 22:04:55,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-10 22:04:55,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:55,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-10 22:04:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:56,244 INFO L124 PetriNetUnfolderBase]: 1277/2598 cut-off events. [2024-11-10 22:04:56,245 INFO L125 PetriNetUnfolderBase]: For 1604/1604 co-relation queries the response was YES. [2024-11-10 22:04:56,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5793 conditions, 2598 events. 1277/2598 cut-off events. For 1604/1604 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18387 event pairs, 777 based on Foata normal form. 84/2411 useless extension candidates. Maximal degree in co-relation 5776. Up to 1637 conditions per place. [2024-11-10 22:04:56,260 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 59 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-10 22:04:56,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 376 flow [2024-11-10 22:04:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-10 22:04:56,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-11-10 22:04:56,263 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 140 flow. Second operand 4 states and 104 transitions. [2024-11-10 22:04:56,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 376 flow [2024-11-10 22:04:56,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:56,269 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 160 flow [2024-11-10 22:04:56,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-10 22:04:56,270 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-11-10 22:04:56,270 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 160 flow [2024-11-10 22:04:56,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-10 22:04:56,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:56,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:56,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:04:56,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:56,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash -709684376, now seen corresponding path program 1 times [2024-11-10 22:04:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701442482] [2024-11-10 22:04:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:56,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701442482] [2024-11-10 22:04:56,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701442482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:56,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:56,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:56,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439079709] [2024-11-10 22:04:56,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:56,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:56,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:56,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:56,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-10 22:04:56,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-10 22:04:56,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:56,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-10 22:04:56,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:56,645 INFO L124 PetriNetUnfolderBase]: 1303/2577 cut-off events. [2024-11-10 22:04:56,646 INFO L125 PetriNetUnfolderBase]: For 1695/1915 co-relation queries the response was YES. [2024-11-10 22:04:56,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 2577 events. 1303/2577 cut-off events. For 1695/1915 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18033 event pairs, 781 based on Foata normal form. 154/2597 useless extension candidates. Maximal degree in co-relation 6163. Up to 1657 conditions per place. [2024-11-10 22:04:56,660 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-10 22:04:56,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 400 flow [2024-11-10 22:04:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-10 22:04:56,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-10 22:04:56,662 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 160 flow. Second operand 4 states and 100 transitions. [2024-11-10 22:04:56,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 400 flow [2024-11-10 22:04:56,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:56,669 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 182 flow [2024-11-10 22:04:56,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-10 22:04:56,670 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-11-10 22:04:56,671 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 182 flow [2024-11-10 22:04:56,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-10 22:04:56,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:56,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:56,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:04:56,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:56,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 698961642, now seen corresponding path program 1 times [2024-11-10 22:04:56,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:56,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880890131] [2024-11-10 22:04:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:56,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:56,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880890131] [2024-11-10 22:04:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880890131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:56,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:56,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222816120] [2024-11-10 22:04:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:56,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:56,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:56,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:56,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:56,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:56,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:56,987 INFO L124 PetriNetUnfolderBase]: 1021/2469 cut-off events. [2024-11-10 22:04:56,987 INFO L125 PetriNetUnfolderBase]: For 1773/2024 co-relation queries the response was YES. [2024-11-10 22:04:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6122 conditions, 2469 events. 1021/2469 cut-off events. For 1773/2024 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19226 event pairs, 193 based on Foata normal form. 146/2585 useless extension candidates. Maximal degree in co-relation 6101. Up to 674 conditions per place. [2024-11-10 22:04:57,006 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-11-10 22:04:57,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 475 flow [2024-11-10 22:04:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:04:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:04:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-10 22:04:57,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2024-11-10 22:04:57,009 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 182 flow. Second operand 5 states and 136 transitions. [2024-11-10 22:04:57,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 475 flow [2024-11-10 22:04:57,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:57,015 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 280 flow [2024-11-10 22:04:57,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-10 22:04:57,017 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2024-11-10 22:04:57,017 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 280 flow [2024-11-10 22:04:57,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:57,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:57,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:57,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:04:57,018 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:57,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash 698961641, now seen corresponding path program 1 times [2024-11-10 22:04:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:57,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632437087] [2024-11-10 22:04:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:57,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:57,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632437087] [2024-11-10 22:04:57,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632437087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:57,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:57,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907937415] [2024-11-10 22:04:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:57,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:57,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:57,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:57,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:57,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:57,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:57,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:57,424 INFO L124 PetriNetUnfolderBase]: 1098/2834 cut-off events. [2024-11-10 22:04:57,424 INFO L125 PetriNetUnfolderBase]: For 4156/4409 co-relation queries the response was YES. [2024-11-10 22:04:57,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 2834 events. 1098/2834 cut-off events. For 4156/4409 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22883 event pairs, 268 based on Foata normal form. 220/3048 useless extension candidates. Maximal degree in co-relation 7263. Up to 809 conditions per place. [2024-11-10 22:04:57,446 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 63 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-10 22:04:57,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 564 flow [2024-11-10 22:04:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:04:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:04:57,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-10 22:04:57,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210526315789474 [2024-11-10 22:04:57,448 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 280 flow. Second operand 5 states and 137 transitions. [2024-11-10 22:04:57,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 564 flow [2024-11-10 22:04:57,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 541 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:57,457 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 335 flow [2024-11-10 22:04:57,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-10 22:04:57,460 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-10 22:04:57,461 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 335 flow [2024-11-10 22:04:57,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:57,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:57,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:57,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:04:57,462 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:57,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -438157864, now seen corresponding path program 1 times [2024-11-10 22:04:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849885078] [2024-11-10 22:04:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:57,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849885078] [2024-11-10 22:04:57,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849885078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:57,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:57,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292588608] [2024-11-10 22:04:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:57,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:57,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:57,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:57,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:57,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:57,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:57,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:57,876 INFO L124 PetriNetUnfolderBase]: 1280/3296 cut-off events. [2024-11-10 22:04:57,876 INFO L125 PetriNetUnfolderBase]: For 5337/5635 co-relation queries the response was YES. [2024-11-10 22:04:57,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8779 conditions, 3296 events. 1280/3296 cut-off events. For 5337/5635 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 26974 event pairs, 242 based on Foata normal form. 170/3460 useless extension candidates. Maximal degree in co-relation 8751. Up to 1250 conditions per place. [2024-11-10 22:04:57,898 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 68 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-11-10 22:04:57,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 672 flow [2024-11-10 22:04:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:04:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:04:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-10 22:04:57,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-10 22:04:57,901 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 335 flow. Second operand 5 states and 140 transitions. [2024-11-10 22:04:57,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 672 flow [2024-11-10 22:04:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 668 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-10 22:04:57,911 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 443 flow [2024-11-10 22:04:57,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-10 22:04:57,913 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-11-10 22:04:57,913 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 443 flow [2024-11-10 22:04:57,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:57,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:57,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:57,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:04:57,913 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:57,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash -438157865, now seen corresponding path program 1 times [2024-11-10 22:04:57,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851469402] [2024-11-10 22:04:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:57,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851469402] [2024-11-10 22:04:57,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851469402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:57,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:57,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588333246] [2024-11-10 22:04:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:57,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:57,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:04:57,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:57,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:57,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:04:57,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:58,220 INFO L124 PetriNetUnfolderBase]: 1002/2433 cut-off events. [2024-11-10 22:04:58,220 INFO L125 PetriNetUnfolderBase]: For 6471/6772 co-relation queries the response was YES. [2024-11-10 22:04:58,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 2433 events. 1002/2433 cut-off events. For 6471/6772 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 18464 event pairs, 770 based on Foata normal form. 230/2593 useless extension candidates. Maximal degree in co-relation 6615. Up to 1620 conditions per place. [2024-11-10 22:04:58,234 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 33 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-10 22:04:58,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 372 flow [2024-11-10 22:04:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-10 22:04:58,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-11-10 22:04:58,235 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 443 flow. Second operand 3 states and 68 transitions. [2024-11-10 22:04:58,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 372 flow [2024-11-10 22:04:58,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 338 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 22:04:58,243 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 272 flow [2024-11-10 22:04:58,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-11-10 22:04:58,245 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-11-10 22:04:58,246 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 272 flow [2024-11-10 22:04:58,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-10 22:04:58,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:58,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:58,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:04:58,247 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:58,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1897913037, now seen corresponding path program 1 times [2024-11-10 22:04:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:58,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125105185] [2024-11-10 22:04:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125105185] [2024-11-10 22:04:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125105185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:58,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728912131] [2024-11-10 22:04:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:58,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:58,320 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) [2024-11-10 22:04:58,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:04:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:58,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:04:58,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:58,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:58,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728912131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:58,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:58,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-10 22:04:58,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208333357] [2024-11-10 22:04:58,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:58,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:04:58,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:04:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:04:58,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 22:04:58,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-11-10 22:04:58,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:58,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 22:04:58,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:58,868 INFO L124 PetriNetUnfolderBase]: 2052/4006 cut-off events. [2024-11-10 22:04:58,868 INFO L125 PetriNetUnfolderBase]: For 4463/4761 co-relation queries the response was YES. [2024-11-10 22:04:58,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10673 conditions, 4006 events. 2052/4006 cut-off events. For 4463/4761 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28710 event pairs, 324 based on Foata normal form. 222/4050 useless extension candidates. Maximal degree in co-relation 10647. Up to 1562 conditions per place. [2024-11-10 22:04:58,893 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-10 22:04:58,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 559 flow [2024-11-10 22:04:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-10 22:04:58,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-10 22:04:58,895 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 272 flow. Second operand 4 states and 89 transitions. [2024-11-10 22:04:58,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 559 flow [2024-11-10 22:04:58,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:58,904 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 279 flow [2024-11-10 22:04:58,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-11-10 22:04:58,905 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-10 22:04:58,905 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 279 flow [2024-11-10 22:04:58,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-11-10 22:04:58,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:58,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:04:58,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:04:59,113 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 [2024-11-10 22:04:59,114 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:59,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1294237833, now seen corresponding path program 1 times [2024-11-10 22:04:59,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:59,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501973297] [2024-11-10 22:04:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:04:59,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:59,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501973297] [2024-11-10 22:04:59,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501973297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:59,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:59,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21866673] [2024-11-10 22:04:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:59,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:59,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 22:04:59,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 22:04:59,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:59,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 22:04:59,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:59,499 INFO L124 PetriNetUnfolderBase]: 1777/3615 cut-off events. [2024-11-10 22:04:59,499 INFO L125 PetriNetUnfolderBase]: For 4768/5006 co-relation queries the response was YES. [2024-11-10 22:04:59,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 3615 events. 1777/3615 cut-off events. For 4768/5006 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 25960 event pairs, 472 based on Foata normal form. 210/3751 useless extension candidates. Maximal degree in co-relation 10022. Up to 1262 conditions per place. [2024-11-10 22:04:59,518 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-10 22:04:59,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 568 flow [2024-11-10 22:04:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-10 22:04:59,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-10 22:04:59,520 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 279 flow. Second operand 4 states and 89 transitions. [2024-11-10 22:04:59,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 568 flow [2024-11-10 22:04:59,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 556 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:59,528 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 283 flow [2024-11-10 22:04:59,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-11-10 22:04:59,529 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-10 22:04:59,529 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 283 flow [2024-11-10 22:04:59,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 22:04:59,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:59,530 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:59,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:04:59,530 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:59,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1410925633, now seen corresponding path program 1 times [2024-11-10 22:04:59,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:59,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285585103] [2024-11-10 22:04:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:59,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:59,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285585103] [2024-11-10 22:04:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285585103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:59,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534326024] [2024-11-10 22:04:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:59,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:59,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:59,585 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) [2024-11-10 22:04:59,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:04:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:59,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:04:59,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:59,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534326024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:59,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:04:59,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691939312] [2024-11-10 22:04:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:59,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:04:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:04:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:04:59,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-10 22:04:59,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-11-10 22:04:59,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:59,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-10 22:04:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:00,132 INFO L124 PetriNetUnfolderBase]: 1713/3474 cut-off events. [2024-11-10 22:05:00,132 INFO L125 PetriNetUnfolderBase]: For 6067/6174 co-relation queries the response was YES. [2024-11-10 22:05:00,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9687 conditions, 3474 events. 1713/3474 cut-off events. For 6067/6174 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 24806 event pairs, 147 based on Foata normal form. 222/3571 useless extension candidates. Maximal degree in co-relation 9661. Up to 1291 conditions per place. [2024-11-10 22:05:00,153 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 82 selfloop transitions, 6 changer transitions 1/99 dead transitions. [2024-11-10 22:05:00,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 728 flow [2024-11-10 22:05:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:05:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:05:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-10 22:05:00,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 22:05:00,155 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 283 flow. Second operand 6 states and 133 transitions. [2024-11-10 22:05:00,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 728 flow [2024-11-10 22:05:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:05:00,163 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 283 flow [2024-11-10 22:05:00,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-10 22:05:00,164 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-11-10 22:05:00,164 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 283 flow [2024-11-10 22:05:00,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-11-10 22:05:00,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:00,165 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:00,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:05:00,369 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 [2024-11-10 22:05:00,370 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:00,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 789021841, now seen corresponding path program 1 times [2024-11-10 22:05:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:00,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135228409] [2024-11-10 22:05:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:05:00,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135228409] [2024-11-10 22:05:00,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135228409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:05:00,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:05:00,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:05:00,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329076085] [2024-11-10 22:05:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:05:00,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:05:00,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:05:00,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:05:00,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 22:05:00,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-10 22:05:00,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:00,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 22:05:00,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:00,733 INFO L124 PetriNetUnfolderBase]: 1767/3455 cut-off events. [2024-11-10 22:05:00,733 INFO L125 PetriNetUnfolderBase]: For 5436/5533 co-relation queries the response was YES. [2024-11-10 22:05:00,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10140 conditions, 3455 events. 1767/3455 cut-off events. For 5436/5533 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 23667 event pairs, 486 based on Foata normal form. 212/3585 useless extension candidates. Maximal degree in co-relation 10113. Up to 1242 conditions per place. [2024-11-10 22:05:00,756 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 60 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-10 22:05:00,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 558 flow [2024-11-10 22:05:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:05:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:05:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-10 22:05:00,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-10 22:05:00,758 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 283 flow. Second operand 4 states and 85 transitions. [2024-11-10 22:05:00,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 558 flow [2024-11-10 22:05:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 548 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:05:00,770 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 289 flow [2024-11-10 22:05:00,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-11-10 22:05:00,771 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-11-10 22:05:00,771 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 289 flow [2024-11-10 22:05:00,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-10 22:05:00,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:00,771 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:00,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:05:00,772 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:00,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1099637651, now seen corresponding path program 1 times [2024-11-10 22:05:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507543714] [2024-11-10 22:05:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507543714] [2024-11-10 22:05:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507543714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914053239] [2024-11-10 22:05:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:00,833 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) [2024-11-10 22:05:00,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:05:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:00,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:05:00,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:00,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:05:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:00,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914053239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:05:00,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:05:00,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 22:05:00,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632851858] [2024-11-10 22:05:00,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:05:00,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:05:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:05:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:05:00,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:05:00,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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) [2024-11-10 22:05:00,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:00,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:05:00,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:01,327 INFO L124 PetriNetUnfolderBase]: 1339/3189 cut-off events. [2024-11-10 22:05:01,327 INFO L125 PetriNetUnfolderBase]: For 6918/6960 co-relation queries the response was YES. [2024-11-10 22:05:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9017 conditions, 3189 events. 1339/3189 cut-off events. For 6918/6960 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22769 event pairs, 119 based on Foata normal form. 232/3394 useless extension candidates. Maximal degree in co-relation 8991. Up to 507 conditions per place. [2024-11-10 22:05:01,347 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 69 selfloop transitions, 12 changer transitions 8/103 dead transitions. [2024-11-10 22:05:01,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 103 transitions, 700 flow [2024-11-10 22:05:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:05:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:05:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-10 22:05:01,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6992481203007519 [2024-11-10 22:05:01,349 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 289 flow. Second operand 7 states and 186 transitions. [2024-11-10 22:05:01,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 103 transitions, 700 flow [2024-11-10 22:05:01,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 685 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:05:01,359 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 397 flow [2024-11-10 22:05:01,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2024-11-10 22:05:01,360 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-11-10 22:05:01,360 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 397 flow [2024-11-10 22:05:01,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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) [2024-11-10 22:05:01,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:01,361 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:01,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:05:01,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:01,562 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:01,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash 273379351, now seen corresponding path program 1 times [2024-11-10 22:05:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084873858] [2024-11-10 22:05:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:01,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084873858] [2024-11-10 22:05:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084873858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278528808] [2024-11-10 22:05:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:01,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:01,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:01,661 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) [2024-11-10 22:05:01,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:05:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:01,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:05:01,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:01,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:05:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:01,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278528808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:05:01,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:05:01,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:05:01,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540505947] [2024-11-10 22:05:01,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:05:01,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:05:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:05:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:05:01,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:05:01,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 397 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 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) [2024-11-10 22:05:01,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:01,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:05:01,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:02,367 INFO L124 PetriNetUnfolderBase]: 1744/4323 cut-off events. [2024-11-10 22:05:02,367 INFO L125 PetriNetUnfolderBase]: For 12796/12831 co-relation queries the response was YES. [2024-11-10 22:05:02,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12594 conditions, 4323 events. 1744/4323 cut-off events. For 12796/12831 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 30967 event pairs, 59 based on Foata normal form. 205/4521 useless extension candidates. Maximal degree in co-relation 12561. Up to 420 conditions per place. [2024-11-10 22:05:02,398 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 100 selfloop transitions, 17 changer transitions 17/148 dead transitions. [2024-11-10 22:05:02,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1043 flow [2024-11-10 22:05:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:05:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:05:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-11-10 22:05:02,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-10 22:05:02,400 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 397 flow. Second operand 12 states and 316 transitions. [2024-11-10 22:05:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1043 flow [2024-11-10 22:05:02,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 994 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-10 22:05:02,420 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 443 flow [2024-11-10 22:05:02,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=92, PETRI_TRANSITIONS=56} [2024-11-10 22:05:02,421 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2024-11-10 22:05:02,421 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 443 flow [2024-11-10 22:05:02,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 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) [2024-11-10 22:05:02,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:02,422 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:02,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:05:02,622 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 [2024-11-10 22:05:02,623 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:02,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:02,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2013372279, now seen corresponding path program 1 times [2024-11-10 22:05:02,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273005486] [2024-11-10 22:05:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:02,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273005486] [2024-11-10 22:05:02,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273005486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:02,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426313692] [2024-11-10 22:05:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:02,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:02,758 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) [2024-11-10 22:05:02,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:05:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:02,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:05:02,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:02,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:05:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:02,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426313692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:05:02,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:05:02,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-10 22:05:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555824953] [2024-11-10 22:05:02,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:05:02,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 22:05:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 22:05:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-10 22:05:02,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:05:02,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 56 transitions, 443 flow. Second operand has 16 states, 16 states have (on average 18.25) internal successors, (292), 16 states have internal predecessors, (292), 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) [2024-11-10 22:05:02,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:02,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:05:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:03,869 INFO L124 PetriNetUnfolderBase]: 2554/6279 cut-off events. [2024-11-10 22:05:03,869 INFO L125 PetriNetUnfolderBase]: For 19680/19722 co-relation queries the response was YES. [2024-11-10 22:05:03,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18277 conditions, 6279 events. 2554/6279 cut-off events. For 19680/19722 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 45728 event pairs, 119 based on Foata normal form. 192/6444 useless extension candidates. Maximal degree in co-relation 18237. Up to 521 conditions per place. [2024-11-10 22:05:03,897 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 120 selfloop transitions, 24 changer transitions 25/183 dead transitions. [2024-11-10 22:05:03,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 183 transitions, 1320 flow [2024-11-10 22:05:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:05:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:05:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 394 transitions. [2024-11-10 22:05:03,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6912280701754386 [2024-11-10 22:05:03,900 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 443 flow. Second operand 15 states and 394 transitions. [2024-11-10 22:05:03,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 183 transitions, 1320 flow [2024-11-10 22:05:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 183 transitions, 1307 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 22:05:03,927 INFO L231 Difference]: Finished difference. Result has 110 places, 64 transitions, 594 flow [2024-11-10 22:05:03,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=594, PETRI_PLACES=110, PETRI_TRANSITIONS=64} [2024-11-10 22:05:03,929 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2024-11-10 22:05:03,929 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 64 transitions, 594 flow [2024-11-10 22:05:03,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.25) internal successors, (292), 16 states have internal predecessors, (292), 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) [2024-11-10 22:05:03,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:03,930 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:03,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:05:04,130 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 [2024-11-10 22:05:04,131 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:04,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:04,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1968246019, now seen corresponding path program 2 times [2024-11-10 22:05:04,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:04,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911961256] [2024-11-10 22:05:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:04,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911961256] [2024-11-10 22:05:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911961256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334052381] [2024-11-10 22:05:04,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:05:04,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:04,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:04,487 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) [2024-11-10 22:05:04,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:05:04,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:05:04,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:05:04,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 22:05:04,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:04,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:05:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:04,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334052381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:05:04,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:05:04,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-10 22:05:04,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999454606] [2024-11-10 22:05:04,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:05:04,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:05:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:04,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:05:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:05:04,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:05:04,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 64 transitions, 594 flow. Second operand has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 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) [2024-11-10 22:05:04,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:04,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:05:04,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:06,972 INFO L124 PetriNetUnfolderBase]: 4336/10755 cut-off events. [2024-11-10 22:05:06,972 INFO L125 PetriNetUnfolderBase]: For 48909/48944 co-relation queries the response was YES. [2024-11-10 22:05:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31535 conditions, 10755 events. 4336/10755 cut-off events. For 48909/48944 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 78272 event pairs, 59 based on Foata normal form. 365/11113 useless extension candidates. Maximal degree in co-relation 31487. Up to 851 conditions per place. [2024-11-10 22:05:07,053 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 212 selfloop transitions, 41 changer transitions 49/316 dead transitions. [2024-11-10 22:05:07,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 316 transitions, 2298 flow [2024-11-10 22:05:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 22:05:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 22:05:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 737 transitions. [2024-11-10 22:05:07,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6926691729323309 [2024-11-10 22:05:07,056 INFO L175 Difference]: Start difference. First operand has 110 places, 64 transitions, 594 flow. Second operand 28 states and 737 transitions. [2024-11-10 22:05:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 316 transitions, 2298 flow [2024-11-10 22:05:07,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 316 transitions, 2218 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 22:05:07,106 INFO L231 Difference]: Finished difference. Result has 144 places, 80 transitions, 856 flow [2024-11-10 22:05:07,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=856, PETRI_PLACES=144, PETRI_TRANSITIONS=80} [2024-11-10 22:05:07,107 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2024-11-10 22:05:07,107 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 80 transitions, 856 flow [2024-11-10 22:05:07,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 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) [2024-11-10 22:05:07,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:07,108 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:07,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:05:07,308 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 [2024-11-10 22:05:07,309 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:07,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash 606573191, now seen corresponding path program 2 times [2024-11-10 22:05:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:07,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850703642] [2024-11-10 22:05:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:05:07,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:07,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850703642] [2024-11-10 22:05:07,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850703642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:07,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862469771] [2024-11-10 22:05:07,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:05:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:07,949 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) [2024-11-10 22:05:07,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:05:08,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:05:08,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:05:08,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:05:08,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:05:08,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:05:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862469771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:05:08,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:05:08,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 46 [2024-11-10 22:05:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021273359] [2024-11-10 22:05:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:05:08,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:05:08,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:05:08,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 22:05:08,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 22:05:08,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 80 transitions, 856 flow. Second operand has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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) [2024-11-10 22:05:08,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:08,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 22:05:08,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:16,593 INFO L124 PetriNetUnfolderBase]: 27984/53802 cut-off events. [2024-11-10 22:05:16,593 INFO L125 PetriNetUnfolderBase]: For 128444/128464 co-relation queries the response was YES. [2024-11-10 22:05:16,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163205 conditions, 53802 events. 27984/53802 cut-off events. For 128444/128464 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 471430 event pairs, 595 based on Foata normal form. 617/54391 useless extension candidates. Maximal degree in co-relation 163154. Up to 6831 conditions per place. [2024-11-10 22:05:16,948 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 637/637 dead transitions. [2024-11-10 22:05:16,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 637 transitions, 7020 flow [2024-11-10 22:05:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:05:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:05:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 528 transitions. [2024-11-10 22:05:16,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041189931350115 [2024-11-10 22:05:16,951 INFO L175 Difference]: Start difference. First operand has 144 places, 80 transitions, 856 flow. Second operand 23 states and 528 transitions. [2024-11-10 22:05:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 637 transitions, 7020 flow [2024-11-10 22:05:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 637 transitions, 5189 flow, removed 22 selfloop flow, removed 48 redundant places. [2024-11-10 22:05:17,620 INFO L231 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2024-11-10 22:05:17,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2024-11-10 22:05:17,621 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 74 predicate places. [2024-11-10 22:05:17,621 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2024-11-10 22:05:17,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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) [2024-11-10 22:05:17,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-10 22:05:17,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-10 22:05:17,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-10 22:05:17,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-10 22:05:17,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-10 22:05:17,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-10 22:05:17,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-10 22:05:17,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-10 22:05:17,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-10 22:05:17,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-10 22:05:17,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-10 22:05:17,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-10 22:05:17,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:05:17,827 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 [2024-11-10 22:05:17,828 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:17,833 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 22:05:17,833 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 22:05:17,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:05:17 BasicIcfg [2024-11-10 22:05:17,837 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 22:05:17,837 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:05:17,837 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:05:17,837 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:05:17,838 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:54" (3/4) ... [2024-11-10 22:05:17,839 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 22:05:17,841 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-10 22:05:17,841 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-10 22:05:17,844 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-10 22:05:17,844 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 22:05:17,844 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 22:05:17,844 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 22:05:17,845 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 22:05:17,923 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:05:17,924 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 22:05:17,924 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:05:17,924 INFO L158 Benchmark]: Toolchain (without parser) took 24861.72ms. Allocated memory was 161.5MB in the beginning and 8.8GB in the end (delta: 8.6GB). Free memory was 104.5MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 740.9MB. Max. memory is 16.1GB. [2024-11-10 22:05:17,924 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:05:17,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.66ms. Allocated memory is still 161.5MB. Free memory was 104.5MB in the beginning and 82.6MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 22:05:17,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.87ms. Allocated memory is still 161.5MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:05:17,925 INFO L158 Benchmark]: Boogie Preprocessor took 53.38ms. Allocated memory is still 161.5MB. Free memory was 80.9MB in the beginning and 78.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:05:17,925 INFO L158 Benchmark]: IcfgBuilder took 584.76ms. Allocated memory is still 161.5MB. Free memory was 78.9MB in the beginning and 125.5MB in the end (delta: -46.6MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2024-11-10 22:05:17,926 INFO L158 Benchmark]: TraceAbstraction took 23606.53ms. Allocated memory was 161.5MB in the beginning and 8.8GB in the end (delta: 8.6GB). Free memory was 125.1MB in the beginning and 8.0GB in the end (delta: -7.8GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-10 22:05:17,926 INFO L158 Benchmark]: Witness Printer took 86.76ms. Allocated memory is still 8.8GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 22:05:17,929 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.66ms. Allocated memory is still 161.5MB. Free memory was 104.5MB in the beginning and 82.6MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.87ms. Allocated memory is still 161.5MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.38ms. Allocated memory is still 161.5MB. Free memory was 80.9MB in the beginning and 78.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 584.76ms. Allocated memory is still 161.5MB. Free memory was 78.9MB in the beginning and 125.5MB in the end (delta: -46.6MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 23606.53ms. Allocated memory was 161.5MB in the beginning and 8.8GB in the end (delta: 8.6GB). Free memory was 125.1MB in the beginning and 8.0GB in the end (delta: -7.8GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 86.76ms. Allocated memory is still 8.8GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 4.4MB). 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, 63 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: 23.5s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2180 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2151 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3059 IncrementalHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 18 mSDtfsCounter, 3059 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=856occurred in iteration=18, InterpolantAutomatonStates: 141, 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, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 936 ConstructedInterpolants, 0 QuantifiedInterpolants, 2704 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1053 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 685/2078 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! [2024-11-10 22:05:17,959 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