./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-12.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/fib_safe-12.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 e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:02:34,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:02:34,169 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:02:34,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:02:34,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:02:34,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:02:34,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:02:34,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:02:34,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:02:34,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:02:34,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:02:34,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:02:34,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:02:34,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:02:34,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:02:34,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:02:34,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:02:34,201 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:02:34,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:02:34,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:02:34,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:02:34,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:02:34,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:02:34,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:02:34,204 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:02:34,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:02:34,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:02:34,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:02:34,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:02:34,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:02:34,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:02:34,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:02:34,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2024-11-10 22:02:34,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:02:34,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:02:34,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:02:34,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:02:34,414 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:02:34,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-12.i [2024-11-10 22:02:35,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:02:35,813 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:02:35,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-12.i [2024-11-10 22:02:35,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c1757e3/894edeb6ded1428098bfae752d23ef70/FLAG99cdee1e5 [2024-11-10 22:02:36,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c1757e3/894edeb6ded1428098bfae752d23ef70 [2024-11-10 22:02:36,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:02:36,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:02:36,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:02:36,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:02:36,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:02:36,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f40418a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36, skipping insertion in model container [2024-11-10 22:02:36,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:02:36,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:02:36,500 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:02:36,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:02:36,568 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:02:36,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36 WrapperNode [2024-11-10 22:02:36,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:02:36,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:02:36,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:02:36,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:02:36,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,611 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-10 22:02:36,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:02:36,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:02:36,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:02:36,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:02:36,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,630 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 22:02:36,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,634 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:02:36,640 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:02:36,640 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:02:36,640 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:02:36,641 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (1/1) ... [2024-11-10 22:02:36,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:02:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:36,671 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 22:02:36,674 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 22:02:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:02:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:02:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:02:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:02:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:02:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:02:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:02:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:02:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:02:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:02:36,716 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 22:02:36,834 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:02:36,836 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:02:37,006 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:02:37,006 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:02:37,092 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:02:37,092 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:02:37,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:02:37 BoogieIcfgContainer [2024-11-10 22:02:37,093 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:02:37,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:02:37,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:02:37,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:02:37,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:02:36" (1/3) ... [2024-11-10 22:02:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339c0796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:02:37, skipping insertion in model container [2024-11-10 22:02:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:02:36" (2/3) ... [2024-11-10 22:02:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339c0796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:02:37, skipping insertion in model container [2024-11-10 22:02:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:02:37" (3/3) ... [2024-11-10 22:02:37,102 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2024-11-10 22:02:37,113 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:02:37,114 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 22:02:37,114 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:02:37,154 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:02:37,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-10 22:02:37,214 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-10 22:02:37,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:02:37,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-10 22:02:37,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-10 22:02:37,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-10 22:02:37,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:02:37,238 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;@13da4370, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:02:37,239 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-10 22:02:37,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:02:37,246 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:02:37,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:02:37,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:37,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:37,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:37,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1890733871, now seen corresponding path program 1 times [2024-11-10 22:02:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:37,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954562823] [2024-11-10 22:02:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:37,523 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 22:02:37,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:37,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954562823] [2024-11-10 22:02:37,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954562823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:37,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:37,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817444749] [2024-11-10 22:02:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:37,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:37,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:37,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 22:02:37,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:37,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:37,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:37,836 INFO L124 PetriNetUnfolderBase]: 785/1644 cut-off events. [2024-11-10 22:02:37,837 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 22:02:37,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 1644 events. 785/1644 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11249 event pairs, 188 based on Foata normal form. 230/1468 useless extension candidates. Maximal degree in co-relation 2839. Up to 612 conditions per place. [2024-11-10 22:02:37,850 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-10 22:02:37,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 271 flow [2024-11-10 22:02:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-10 22:02:37,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7877358490566038 [2024-11-10 22:02:37,860 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 167 transitions. [2024-11-10 22:02:37,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 271 flow [2024-11-10 22:02:37,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:37,865 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 131 flow [2024-11-10 22:02:37,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-10 22:02:37,869 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-10 22:02:37,869 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 131 flow [2024-11-10 22:02:37,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 22:02:37,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:37,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:37,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:02:37,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:37,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:37,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1287009838, now seen corresponding path program 1 times [2024-11-10 22:02:37,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:37,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544117116] [2024-11-10 22:02:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:37,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:37,956 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 22:02:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544117116] [2024-11-10 22:02:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544117116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:02:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738599618] [2024-11-10 22:02:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:37,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:02:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:02:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:02:37,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-10 22:02:37,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 22:02:37,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:37,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-10 22:02:37,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:38,224 INFO L124 PetriNetUnfolderBase]: 1553/3036 cut-off events. [2024-11-10 22:02:38,224 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-10 22:02:38,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 3036 events. 1553/3036 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23089 event pairs, 486 based on Foata normal form. 56/2383 useless extension candidates. Maximal degree in co-relation 6293. Up to 1409 conditions per place. [2024-11-10 22:02:38,240 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-10 22:02:38,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 287 flow [2024-11-10 22:02:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:02:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:02:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-10 22:02:38,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:02:38,241 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 131 flow. Second operand 3 states and 114 transitions. [2024-11-10 22:02:38,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 287 flow [2024-11-10 22:02:38,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:02:38,243 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 145 flow [2024-11-10 22:02:38,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-10 22:02:38,244 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-10 22:02:38,244 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 145 flow [2024-11-10 22:02:38,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 22:02:38,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:38,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:38,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:02:38,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:38,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash -224073259, now seen corresponding path program 1 times [2024-11-10 22:02:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:38,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345405307] [2024-11-10 22:02:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:38,329 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 22:02:38,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345405307] [2024-11-10 22:02:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345405307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:38,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:38,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283081722] [2024-11-10 22:02:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:38,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:38,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:02:38,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 22:02:38,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:38,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:02:38,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:38,639 INFO L124 PetriNetUnfolderBase]: 1867/3280 cut-off events. [2024-11-10 22:02:38,640 INFO L125 PetriNetUnfolderBase]: For 550/708 co-relation queries the response was YES. [2024-11-10 22:02:38,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 3280 events. 1867/3280 cut-off events. For 550/708 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22453 event pairs, 453 based on Foata normal form. 143/2828 useless extension candidates. Maximal degree in co-relation 7285. Up to 1719 conditions per place. [2024-11-10 22:02:38,655 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-10 22:02:38,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 377 flow [2024-11-10 22:02:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-10 22:02:38,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-11-10 22:02:38,659 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 145 flow. Second operand 4 states and 149 transitions. [2024-11-10 22:02:38,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 377 flow [2024-11-10 22:02:38,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:02:38,663 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2024-11-10 22:02:38,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-10 22:02:38,663 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-10 22:02:38,663 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2024-11-10 22:02:38,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 22:02:38,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:38,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:38,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:02:38,664 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:38,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash 134132928, now seen corresponding path program 1 times [2024-11-10 22:02:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811200227] [2024-11-10 22:02:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:38,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:38,713 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 22:02:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811200227] [2024-11-10 22:02:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811200227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:38,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:38,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:38,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703469346] [2024-11-10 22:02:38,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:38,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:38,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:02:38,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 22:02:38,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:38,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:02:38,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:38,936 INFO L124 PetriNetUnfolderBase]: 1381/2687 cut-off events. [2024-11-10 22:02:38,937 INFO L125 PetriNetUnfolderBase]: For 657/845 co-relation queries the response was YES. [2024-11-10 22:02:38,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 2687 events. 1381/2687 cut-off events. For 657/845 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19821 event pairs, 159 based on Foata normal form. 179/2399 useless extension candidates. Maximal degree in co-relation 6053. Up to 1551 conditions per place. [2024-11-10 22:02:38,951 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-10 22:02:38,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 415 flow [2024-11-10 22:02:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:02:38,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-10 22:02:38,953 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 167 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:02:38,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 415 flow [2024-11-10 22:02:38,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:02:38,956 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 185 flow [2024-11-10 22:02:38,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-10 22:02:38,957 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-10 22:02:38,958 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 185 flow [2024-11-10 22:02:38,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 22:02:38,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:38,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:38,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:02:38,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:38,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1279990136, now seen corresponding path program 1 times [2024-11-10 22:02:38,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913080669] [2024-11-10 22:02:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:39,009 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 22:02:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913080669] [2024-11-10 22:02:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913080669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478380365] [2024-11-10 22:02:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:39,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:39,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:02:39,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 22:02:39,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:39,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:02:39,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:39,331 INFO L124 PetriNetUnfolderBase]: 2225/3891 cut-off events. [2024-11-10 22:02:39,331 INFO L125 PetriNetUnfolderBase]: For 1992/2810 co-relation queries the response was YES. [2024-11-10 22:02:39,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 3891 events. 2225/3891 cut-off events. For 1992/2810 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28024 event pairs, 457 based on Foata normal form. 261/3540 useless extension candidates. Maximal degree in co-relation 9590. Up to 2241 conditions per place. [2024-11-10 22:02:39,359 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-10 22:02:39,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 459 flow [2024-11-10 22:02:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:02:39,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-10 22:02:39,361 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 185 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:02:39,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 459 flow [2024-11-10 22:02:39,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:39,367 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 205 flow [2024-11-10 22:02:39,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-11-10 22:02:39,368 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-10 22:02:39,369 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 205 flow [2024-11-10 22:02:39,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 22:02:39,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:39,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:39,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:02:39,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:39,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash -47953521, now seen corresponding path program 1 times [2024-11-10 22:02:39,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466353501] [2024-11-10 22:02:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:39,446 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 22:02:39,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:39,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466353501] [2024-11-10 22:02:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466353501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:02:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233960215] [2024-11-10 22:02:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:39,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:02:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:02:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:02:39,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:39,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:39,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:39,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:39,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:39,652 INFO L124 PetriNetUnfolderBase]: 1279/2649 cut-off events. [2024-11-10 22:02:39,653 INFO L125 PetriNetUnfolderBase]: For 1134/1629 co-relation queries the response was YES. [2024-11-10 22:02:39,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 2649 events. 1279/2649 cut-off events. For 1134/1629 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19011 event pairs, 183 based on Foata normal form. 80/2418 useless extension candidates. Maximal degree in co-relation 6626. Up to 954 conditions per place. [2024-11-10 22:02:39,665 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-10 22:02:39,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 503 flow [2024-11-10 22:02:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:02:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:02:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-10 22:02:39,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:02:39,667 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 205 flow. Second operand 5 states and 190 transitions. [2024-11-10 22:02:39,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 503 flow [2024-11-10 22:02:39,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:02:39,670 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 227 flow [2024-11-10 22:02:39,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-10 22:02:39,671 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-10 22:02:39,671 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 227 flow [2024-11-10 22:02:39,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:39,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:39,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:39,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:02:39,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:39,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526994, now seen corresponding path program 1 times [2024-11-10 22:02:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:39,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086546110] [2024-11-10 22:02:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:39,717 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 22:02:39,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:39,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086546110] [2024-11-10 22:02:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086546110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:39,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:02:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575418472] [2024-11-10 22:02:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:39,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:02:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:02:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:02:39,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:39,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:39,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:39,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:39,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:39,936 INFO L124 PetriNetUnfolderBase]: 1331/2831 cut-off events. [2024-11-10 22:02:39,936 INFO L125 PetriNetUnfolderBase]: For 1783/2226 co-relation queries the response was YES. [2024-11-10 22:02:39,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 2831 events. 1331/2831 cut-off events. For 1783/2226 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20944 event pairs, 255 based on Foata normal form. 130/2866 useless extension candidates. Maximal degree in co-relation 7364. Up to 1260 conditions per place. [2024-11-10 22:02:39,948 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-11-10 22:02:39,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 531 flow [2024-11-10 22:02:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:02:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:02:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-10 22:02:39,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-11-10 22:02:39,949 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 227 flow. Second operand 5 states and 191 transitions. [2024-11-10 22:02:39,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 531 flow [2024-11-10 22:02:39,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:02:39,953 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 252 flow [2024-11-10 22:02:39,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-10 22:02:39,954 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-10 22:02:39,954 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 252 flow [2024-11-10 22:02:39,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:39,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:39,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:39,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:02:39,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:39,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667573, now seen corresponding path program 1 times [2024-11-10 22:02:39,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:39,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497960417] [2024-11-10 22:02:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:40,000 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 22:02:40,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497960417] [2024-11-10 22:02:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497960417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:40,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:40,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:02:40,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313184480] [2024-11-10 22:02:40,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:40,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:02:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:02:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:02:40,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:40,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:40,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:40,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:40,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:40,205 INFO L124 PetriNetUnfolderBase]: 1187/2615 cut-off events. [2024-11-10 22:02:40,205 INFO L125 PetriNetUnfolderBase]: For 2211/2602 co-relation queries the response was YES. [2024-11-10 22:02:40,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7057 conditions, 2615 events. 1187/2615 cut-off events. For 2211/2602 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19349 event pairs, 303 based on Foata normal form. 120/2672 useless extension candidates. Maximal degree in co-relation 7024. Up to 1384 conditions per place. [2024-11-10 22:02:40,215 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-10 22:02:40,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 466 flow [2024-11-10 22:02:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:02:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:02:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-10 22:02:40,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641509433962264 [2024-11-10 22:02:40,217 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 252 flow. Second operand 5 states and 176 transitions. [2024-11-10 22:02:40,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 466 flow [2024-11-10 22:02:40,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 451 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 22:02:40,221 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 253 flow [2024-11-10 22:02:40,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-10 22:02:40,222 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-10 22:02:40,223 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 253 flow [2024-11-10 22:02:40,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:40,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:40,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:40,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:02:40,223 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:40,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667574, now seen corresponding path program 1 times [2024-11-10 22:02:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361992412] [2024-11-10 22:02:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:40,272 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 22:02:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361992412] [2024-11-10 22:02:40,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361992412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:40,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:40,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:02:40,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421056342] [2024-11-10 22:02:40,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:40,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:02:40,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:40,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:02:40,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:02:40,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:40,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:40,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:40,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:40,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:40,483 INFO L124 PetriNetUnfolderBase]: 1235/2735 cut-off events. [2024-11-10 22:02:40,483 INFO L125 PetriNetUnfolderBase]: For 2633/3028 co-relation queries the response was YES. [2024-11-10 22:02:40,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 2735 events. 1235/2735 cut-off events. For 2633/3028 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 20411 event pairs, 295 based on Foata normal form. 112/2832 useless extension candidates. Maximal degree in co-relation 7376. Up to 1400 conditions per place. [2024-11-10 22:02:40,500 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-10 22:02:40,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 535 flow [2024-11-10 22:02:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:02:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:02:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-10 22:02:40,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-11-10 22:02:40,501 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 253 flow. Second operand 5 states and 187 transitions. [2024-11-10 22:02:40,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 535 flow [2024-11-10 22:02:40,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:02:40,505 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 275 flow [2024-11-10 22:02:40,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-10 22:02:40,505 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-10 22:02:40,505 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 275 flow [2024-11-10 22:02:40,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 22:02:40,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:40,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:40,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:02:40,506 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:40,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash -864154063, now seen corresponding path program 1 times [2024-11-10 22:02:40,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:40,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586172833] [2024-11-10 22:02:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:40,577 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 22:02:40,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586172833] [2024-11-10 22:02:40,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586172833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645742158] [2024-11-10 22:02:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:40,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:40,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:40,581 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 22:02:40,582 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 22:02:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:40,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:02:40,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:40,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:02:40,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645742158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:40,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:02:40,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-10 22:02:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287276836] [2024-11-10 22:02:40,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:40,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:40,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:02:40,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-10 22:02:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 22:02:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-10 22:02:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:40,972 INFO L124 PetriNetUnfolderBase]: 1235/2790 cut-off events. [2024-11-10 22:02:40,972 INFO L125 PetriNetUnfolderBase]: For 3989/4333 co-relation queries the response was YES. [2024-11-10 22:02:40,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 2790 events. 1235/2790 cut-off events. For 3989/4333 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21767 event pairs, 187 based on Foata normal form. 191/2948 useless extension candidates. Maximal degree in co-relation 7651. Up to 1444 conditions per place. [2024-11-10 22:02:40,989 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-10 22:02:40,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 521 flow [2024-11-10 22:02:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-10 22:02:40,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2024-11-10 22:02:40,990 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 275 flow. Second operand 4 states and 135 transitions. [2024-11-10 22:02:40,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 521 flow [2024-11-10 22:02:40,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 501 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:40,994 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 264 flow [2024-11-10 22:02:40,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-11-10 22:02:40,995 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-10 22:02:40,995 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 264 flow [2024-11-10 22:02:40,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 22:02:40,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:40,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:41,014 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 22:02:41,199 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,SelfDestructingSolverStorable9 [2024-11-10 22:02:41,200 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:41,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:41,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1531728658, now seen corresponding path program 1 times [2024-11-10 22:02:41,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:41,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068044668] [2024-11-10 22:02:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:41,239 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 22:02:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068044668] [2024-11-10 22:02:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068044668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461894754] [2024-11-10 22:02:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:41,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:41,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:41,241 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 22:02:41,242 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 22:02:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:41,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:02:41,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:41,313 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 22:02:41,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:02:41,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461894754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:41,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:02:41,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:02:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653714772] [2024-11-10 22:02:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:41,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:02:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:02:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:02:41,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:02:41,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:02:41,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:41,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:02:41,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:41,600 INFO L124 PetriNetUnfolderBase]: 1837/3355 cut-off events. [2024-11-10 22:02:41,601 INFO L125 PetriNetUnfolderBase]: For 5060/5552 co-relation queries the response was YES. [2024-11-10 22:02:41,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 3355 events. 1837/3355 cut-off events. For 5060/5552 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23327 event pairs, 375 based on Foata normal form. 133/3370 useless extension candidates. Maximal degree in co-relation 10017. Up to 1466 conditions per place. [2024-11-10 22:02:41,617 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 91 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-11-10 22:02:41,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 693 flow [2024-11-10 22:02:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:02:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:02:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-10 22:02:41,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-10 22:02:41,618 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 264 flow. Second operand 6 states and 201 transitions. [2024-11-10 22:02:41,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 693 flow [2024-11-10 22:02:41,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 687 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:41,623 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 267 flow [2024-11-10 22:02:41,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-10 22:02:41,624 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-10 22:02:41,624 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 267 flow [2024-11-10 22:02:41,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:02:41,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:41,624 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:41,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:02:41,828 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,SelfDestructingSolverStorable10 [2024-11-10 22:02:41,829 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:41,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1018971992, now seen corresponding path program 1 times [2024-11-10 22:02:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433909592] [2024-11-10 22:02:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:41,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433909592] [2024-11-10 22:02:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433909592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511160461] [2024-11-10 22:02:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:41,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:41,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:41,884 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 22:02:41,885 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 22:02:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:41,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:02:41,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:41,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:02:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:42,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511160461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:02:42,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:02:42,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-10 22:02:42,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282011738] [2024-11-10 22:02:42,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:02:42,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:02:42,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:02:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:02:42,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-10 22:02:42,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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 22:02:42,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:42,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-10 22:02:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:42,576 INFO L124 PetriNetUnfolderBase]: 3515/7488 cut-off events. [2024-11-10 22:02:42,577 INFO L125 PetriNetUnfolderBase]: For 11263/12014 co-relation queries the response was YES. [2024-11-10 22:02:42,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20802 conditions, 7488 events. 3515/7488 cut-off events. For 11263/12014 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 64597 event pairs, 187 based on Foata normal form. 174/7553 useless extension candidates. Maximal degree in co-relation 20768. Up to 1445 conditions per place. [2024-11-10 22:02:42,614 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 135 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-10 22:02:42,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 162 transitions, 1093 flow [2024-11-10 22:02:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:02:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:02:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-10 22:02:42,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-11-10 22:02:42,615 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 267 flow. Second operand 6 states and 231 transitions. [2024-11-10 22:02:42,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 162 transitions, 1093 flow [2024-11-10 22:02:42,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 162 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:02:42,621 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 298 flow [2024-11-10 22:02:42,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-10 22:02:42,621 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-10 22:02:42,621 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 298 flow [2024-11-10 22:02:42,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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 22:02:42,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:42,622 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:42,634 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 22:02:42,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:42,823 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:42,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -238947900, now seen corresponding path program 1 times [2024-11-10 22:02:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:42,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091120757] [2024-11-10 22:02:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:42,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:42,896 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 22:02:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091120757] [2024-11-10 22:02:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091120757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:42,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:42,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360633346] [2024-11-10 22:02:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:42,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:42,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:02:42,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 22:02:42,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:42,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:02:42,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:43,572 INFO L124 PetriNetUnfolderBase]: 5489/9683 cut-off events. [2024-11-10 22:02:43,573 INFO L125 PetriNetUnfolderBase]: For 16145/17818 co-relation queries the response was YES. [2024-11-10 22:02:43,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29537 conditions, 9683 events. 5489/9683 cut-off events. For 16145/17818 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 74904 event pairs, 2581 based on Foata normal form. 452/9884 useless extension candidates. Maximal degree in co-relation 29500. Up to 4789 conditions per place. [2024-11-10 22:02:43,705 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 83 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-10 22:02:43,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 698 flow [2024-11-10 22:02:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-10 22:02:43,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2024-11-10 22:02:43,706 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 298 flow. Second operand 4 states and 138 transitions. [2024-11-10 22:02:43,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 698 flow [2024-11-10 22:02:43,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 672 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:43,717 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 302 flow [2024-11-10 22:02:43,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-11-10 22:02:43,717 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-10 22:02:43,718 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 302 flow [2024-11-10 22:02:43,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 22:02:43,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:43,718 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:43,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:02:43,718 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:43,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1523360417, now seen corresponding path program 1 times [2024-11-10 22:02:43,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:43,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630002120] [2024-11-10 22:02:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:43,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:43,763 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 22:02:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630002120] [2024-11-10 22:02:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630002120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951405951] [2024-11-10 22:02:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:43,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:43,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:43,766 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 22:02:43,767 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 22:02:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:43,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:02:43,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:43,844 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 22:02:43,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:02:43,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951405951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:43,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:02:43,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:02:43,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721221438] [2024-11-10 22:02:43,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:43,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:02:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:02:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:02:43,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:02:43,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 22:02:43,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:43,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:02:43,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:44,400 INFO L124 PetriNetUnfolderBase]: 4427/8158 cut-off events. [2024-11-10 22:02:44,401 INFO L125 PetriNetUnfolderBase]: For 16976/17692 co-relation queries the response was YES. [2024-11-10 22:02:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24824 conditions, 8158 events. 4427/8158 cut-off events. For 16976/17692 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 64137 event pairs, 187 based on Foata normal form. 450/8347 useless extension candidates. Maximal degree in co-relation 24786. Up to 4560 conditions per place. [2024-11-10 22:02:44,515 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 100 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2024-11-10 22:02:44,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 901 flow [2024-11-10 22:02:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:02:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:02:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-10 22:02:44,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-10 22:02:44,517 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 302 flow. Second operand 6 states and 198 transitions. [2024-11-10 22:02:44,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 901 flow [2024-11-10 22:02:44,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 887 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:44,529 INFO L231 Difference]: Finished difference. Result has 87 places, 62 transitions, 306 flow [2024-11-10 22:02:44,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=87, PETRI_TRANSITIONS=62} [2024-11-10 22:02:44,530 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:02:44,530 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 62 transitions, 306 flow [2024-11-10 22:02:44,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 22:02:44,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:44,530 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:44,544 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 22:02:44,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:44,731 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:44,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1241379951, now seen corresponding path program 1 times [2024-11-10 22:02:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905306357] [2024-11-10 22:02:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:44,791 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 22:02:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905306357] [2024-11-10 22:02:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905306357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108115251] [2024-11-10 22:02:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:44,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:44,795 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 22:02:44,796 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 22:02:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:44,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:02:44,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:44,864 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 22:02:44,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:02:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108115251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:44,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:02:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:02:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833968057] [2024-11-10 22:02:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:44,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:02:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:02:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:02:44,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:02:44,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 62 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 22:02:44,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:44,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:02:44,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:45,655 INFO L124 PetriNetUnfolderBase]: 4991/8868 cut-off events. [2024-11-10 22:02:45,655 INFO L125 PetriNetUnfolderBase]: For 17348/17719 co-relation queries the response was YES. [2024-11-10 22:02:45,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27871 conditions, 8868 events. 4991/8868 cut-off events. For 17348/17719 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 68817 event pairs, 1021 based on Foata normal form. 198/8671 useless extension candidates. Maximal degree in co-relation 27832. Up to 3938 conditions per place. [2024-11-10 22:02:45,694 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 97 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-10 22:02:45,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 837 flow [2024-11-10 22:02:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:02:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:02:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-11-10 22:02:45,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-11-10 22:02:45,695 INFO L175 Difference]: Start difference. First operand has 87 places, 62 transitions, 306 flow. Second operand 6 states and 195 transitions. [2024-11-10 22:02:45,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 837 flow [2024-11-10 22:02:45,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 823 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:02:45,706 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 307 flow [2024-11-10 22:02:45,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-10 22:02:45,706 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-10 22:02:45,706 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 307 flow [2024-11-10 22:02:45,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 22:02:45,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:45,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:45,719 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 22:02:45,907 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,SelfDestructingSolverStorable14 [2024-11-10 22:02:45,907 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:45,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash 20467549, now seen corresponding path program 1 times [2024-11-10 22:02:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688018195] [2024-11-10 22:02:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:45,939 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 22:02:45,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:45,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688018195] [2024-11-10 22:02:45,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688018195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:45,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:45,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922716612] [2024-11-10 22:02:45,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:45,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:45,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:45,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:45,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:02:45,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 22:02:45,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:45,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:02:45,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:46,508 INFO L124 PetriNetUnfolderBase]: 4731/8336 cut-off events. [2024-11-10 22:02:46,509 INFO L125 PetriNetUnfolderBase]: For 18507/18761 co-relation queries the response was YES. [2024-11-10 22:02:46,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26863 conditions, 8336 events. 4731/8336 cut-off events. For 18507/18761 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 63011 event pairs, 802 based on Foata normal form. 228/8486 useless extension candidates. Maximal degree in co-relation 26824. Up to 4561 conditions per place. [2024-11-10 22:02:46,549 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 78 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-10 22:02:46,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 741 flow [2024-11-10 22:02:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-10 22:02:46,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2024-11-10 22:02:46,550 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 307 flow. Second operand 4 states and 137 transitions. [2024-11-10 22:02:46,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 741 flow [2024-11-10 22:02:46,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 730 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:02:46,564 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 320 flow [2024-11-10 22:02:46,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 22:02:46,565 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:02:46,565 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 320 flow [2024-11-10 22:02:46,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 22:02:46,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:46,565 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:46,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:02:46,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:46,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash 171927439, now seen corresponding path program 1 times [2024-11-10 22:02:46,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:46,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491920123] [2024-11-10 22:02:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:46,586 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 22:02:46,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:46,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491920123] [2024-11-10 22:02:46,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491920123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:46,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:02:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:02:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955802241] [2024-11-10 22:02:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:46,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:02:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:02:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:02:46,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:02:46,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 22:02:46,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:46,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:02:46,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:47,228 INFO L124 PetriNetUnfolderBase]: 5475/9279 cut-off events. [2024-11-10 22:02:47,229 INFO L125 PetriNetUnfolderBase]: For 20142/20230 co-relation queries the response was YES. [2024-11-10 22:02:47,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30628 conditions, 9279 events. 5475/9279 cut-off events. For 20142/20230 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 69918 event pairs, 2605 based on Foata normal form. 198/9229 useless extension candidates. Maximal degree in co-relation 30589. Up to 4793 conditions per place. [2024-11-10 22:02:47,269 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 79 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-10 22:02:47,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 734 flow [2024-11-10 22:02:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:02:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:02:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-10 22:02:47,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-10 22:02:47,270 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 320 flow. Second operand 4 states and 134 transitions. [2024-11-10 22:02:47,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 734 flow [2024-11-10 22:02:47,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 692 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:02:47,283 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 318 flow [2024-11-10 22:02:47,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 22:02:47,284 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:02:47,284 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 318 flow [2024-11-10 22:02:47,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 22:02:47,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:47,284 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:47,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:02:47,284 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:47,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -196956509, now seen corresponding path program 1 times [2024-11-10 22:02:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771668764] [2024-11-10 22:02:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:47,328 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 22:02:47,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:47,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771668764] [2024-11-10 22:02:47,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771668764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:47,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697253989] [2024-11-10 22:02:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:47,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:47,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:47,330 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 22:02:47,331 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 22:02:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:47,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:02:47,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:47,450 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 22:02:47,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:02:47,508 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 22:02:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697253989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:02:47,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:02:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-10 22:02:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505228886] [2024-11-10 22:02:47,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:02:47,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:02:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:02:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:02:47,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:47,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 318 flow. Second operand has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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 22:02:47,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:47,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:47,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:50,323 INFO L124 PetriNetUnfolderBase]: 13739/28619 cut-off events. [2024-11-10 22:02:50,323 INFO L125 PetriNetUnfolderBase]: For 68452/68755 co-relation queries the response was YES. [2024-11-10 22:02:50,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90937 conditions, 28619 events. 13739/28619 cut-off events. For 68452/68755 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 282988 event pairs, 417 based on Foata normal form. 1762/30344 useless extension candidates. Maximal degree in co-relation 90897. Up to 5133 conditions per place. [2024-11-10 22:02:50,565 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 418 selfloop transitions, 71 changer transitions 0/510 dead transitions. [2024-11-10 22:02:50,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 510 transitions, 3786 flow [2024-11-10 22:02:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 22:02:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 22:02:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1070 transitions. [2024-11-10 22:02:50,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210242587601078 [2024-11-10 22:02:50,569 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 318 flow. Second operand 28 states and 1070 transitions. [2024-11-10 22:02:50,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 510 transitions, 3786 flow [2024-11-10 22:02:50,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 510 transitions, 3748 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:02:50,641 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1178 flow [2024-11-10 22:02:50,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1178, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-11-10 22:02:50,641 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-11-10 22:02:50,641 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1178 flow [2024-11-10 22:02:50,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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 22:02:50,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:50,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:50,661 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 22:02:50,842 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 22:02:50,842 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:50,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 218461820, now seen corresponding path program 1 times [2024-11-10 22:02:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:50,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143740451] [2024-11-10 22:02:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:50,898 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 22:02:50,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:50,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143740451] [2024-11-10 22:02:50,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143740451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:50,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988554504] [2024-11-10 22:02:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:50,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:50,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:50,936 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 22:02:50,939 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 22:02:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:50,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:02:50,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:51,063 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:02:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988554504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:02:51,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:02:51,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-10 22:02:51,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313290575] [2024-11-10 22:02:51,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:02:51,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:02:51,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:02:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:02:51,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:51,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 22:02:51,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:51,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:53,005 INFO L124 PetriNetUnfolderBase]: 11473/24751 cut-off events. [2024-11-10 22:02:53,006 INFO L125 PetriNetUnfolderBase]: For 232706/232959 co-relation queries the response was YES. [2024-11-10 22:02:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96524 conditions, 24751 events. 11473/24751 cut-off events. For 232706/232959 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 247636 event pairs, 2025 based on Foata normal form. 2024/26586 useless extension candidates. Maximal degree in co-relation 96465. Up to 8330 conditions per place. [2024-11-10 22:02:53,247 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-11-10 22:02:53,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 1389 flow [2024-11-10 22:02:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:02:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:02:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-10 22:02:53,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-11-10 22:02:53,248 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1178 flow. Second operand 6 states and 206 transitions. [2024-11-10 22:02:53,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 139 transitions, 1389 flow [2024-11-10 22:02:54,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 1148 flow, removed 99 selfloop flow, removed 12 redundant places. [2024-11-10 22:02:54,061 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 715 flow [2024-11-10 22:02:54,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-10 22:02:54,062 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-10 22:02:54,062 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 715 flow [2024-11-10 22:02:54,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 22:02:54,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:54,062 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:54,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:02:54,262 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 22:02:54,263 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:54,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1715647968, now seen corresponding path program 1 times [2024-11-10 22:02:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288372863] [2024-11-10 22:02:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:54,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288372863] [2024-11-10 22:02:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288372863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376715579] [2024-11-10 22:02:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:54,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:54,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:54,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:02:54,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:02:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:54,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:02:54,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:54,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:02:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:02:54,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376715579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:02:54,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:02:54,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-10 22:02:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433727842] [2024-11-10 22:02:54,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:02:54,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:02:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:02:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:02:54,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:54,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 715 flow. Second operand has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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 22:02:54,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:54,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:54,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:02:58,537 INFO L124 PetriNetUnfolderBase]: 16225/35787 cut-off events. [2024-11-10 22:02:58,537 INFO L125 PetriNetUnfolderBase]: For 306718/307081 co-relation queries the response was YES. [2024-11-10 22:02:58,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127896 conditions, 35787 events. 16225/35787 cut-off events. For 306718/307081 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 378209 event pairs, 659 based on Foata normal form. 1108/36792 useless extension candidates. Maximal degree in co-relation 127841. Up to 9039 conditions per place. [2024-11-10 22:02:58,793 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 322 selfloop transitions, 54 changer transitions 0/397 dead transitions. [2024-11-10 22:02:58,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 397 transitions, 3141 flow [2024-11-10 22:02:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:02:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:02:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 775 transitions. [2024-11-10 22:02:58,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6963162623539982 [2024-11-10 22:02:58,795 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 715 flow. Second operand 21 states and 775 transitions. [2024-11-10 22:02:58,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 397 transitions, 3141 flow [2024-11-10 22:02:59,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 397 transitions, 3124 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 22:02:59,390 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1104 flow [2024-11-10 22:02:59,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1104, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-10 22:02:59,391 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-10 22:02:59,391 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1104 flow [2024-11-10 22:02:59,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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 22:02:59,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:02:59,392 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:02:59,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:02:59,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:59,592 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:02:59,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:02:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -552312867, now seen corresponding path program 1 times [2024-11-10 22:02:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:02:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119866371] [2024-11-10 22:02:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:59,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:02:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:59,671 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 22:02:59,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:02:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119866371] [2024-11-10 22:02:59,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119866371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:02:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991009016] [2024-11-10 22:02:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:02:59,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:02:59,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:02:59,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:02:59,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:02:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:02:59,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:02:59,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:02:59,820 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 22:02:59,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:02:59,921 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 22:02:59,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991009016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:02:59,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:02:59,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-10 22:02:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416570870] [2024-11-10 22:02:59,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:02:59,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:02:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:02:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:02:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:02:59,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:02:59,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1104 flow. Second operand has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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 22:02:59,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:02:59,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:02:59,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:08,314 INFO L124 PetriNetUnfolderBase]: 30701/69095 cut-off events. [2024-11-10 22:03:08,314 INFO L125 PetriNetUnfolderBase]: For 1102364/1103054 co-relation queries the response was YES. [2024-11-10 22:03:08,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248729 conditions, 69095 events. 30701/69095 cut-off events. For 1102364/1103054 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 799901 event pairs, 1517 based on Foata normal form. 3652/72710 useless extension candidates. Maximal degree in co-relation 248668. Up to 8063 conditions per place. [2024-11-10 22:03:09,298 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 555 selfloop transitions, 118 changer transitions 0/694 dead transitions. [2024-11-10 22:03:09,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 694 transitions, 5913 flow [2024-11-10 22:03:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 22:03:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 22:03:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1378 transitions. [2024-11-10 22:03:09,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-10 22:03:09,301 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1104 flow. Second operand 37 states and 1378 transitions. [2024-11-10 22:03:09,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 694 transitions, 5913 flow [2024-11-10 22:03:11,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 694 transitions, 5771 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-10 22:03:11,435 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2103 flow [2024-11-10 22:03:11,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2103, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-10 22:03:11,436 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-10 22:03:11,436 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2103 flow [2024-11-10 22:03:11,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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 22:03:11,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:11,436 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:11,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:03:11,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:11,637 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:11,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash -25267541, now seen corresponding path program 2 times [2024-11-10 22:03:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:11,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614068579] [2024-11-10 22:03:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614068579] [2024-11-10 22:03:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614068579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389867726] [2024-11-10 22:03:11,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:03:11,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:11,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:11,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:11,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:03:11,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:03:11,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:03:11,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 22:03:11,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:11,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389867726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:11,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-10 22:03:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165664152] [2024-11-10 22:03:11,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:11,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:03:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:03:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:03:12,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:12,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2103 flow. Second operand has 17 states, 17 states have (on average 25.88235294117647) internal successors, (440), 17 states have internal predecessors, (440), 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 22:03:12,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:12,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:12,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand