./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/fib_unsafe-5.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 e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:23:28,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:23:28,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:23:28,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:23:28,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:23:28,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:23:28,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:23:28,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:23:28,998 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:23:28,998 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:23:28,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:23:28,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:23:28,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:23:28,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:23:28,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:23:29,000 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:23:29,000 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:23:29,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:23:29,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:23:29,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:23:29,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:23:29,002 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2025-03-17 19:23:29,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:23:29,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:23:29,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:23:29,228 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:23:29,228 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:23:29,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-5.i [2025-03-17 19:23:30,350 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832e2550a/299f806d6236440ab078bfa43b2c6bc4/FLAGdc527dcfb [2025-03-17 19:23:30,586 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:23:30,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2025-03-17 19:23:30,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832e2550a/299f806d6236440ab078bfa43b2c6bc4/FLAGdc527dcfb [2025-03-17 19:23:30,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832e2550a/299f806d6236440ab078bfa43b2c6bc4 [2025-03-17 19:23:30,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:23:30,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:23:30,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:23:30,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:23:30,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:23:30,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:23:30" (1/1) ... [2025-03-17 19:23:30,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69348bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:30, skipping insertion in model container [2025-03-17 19:23:30,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:23:30" (1/1) ... [2025-03-17 19:23:30,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:23:31,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:23:31,185 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:23:31,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:23:31,246 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:23:31,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31 WrapperNode [2025-03-17 19:23:31,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:23:31,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:23:31,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:23:31,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:23:31,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,282 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-17 19:23:31,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:23:31,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:23:31,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:23:31,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:23:31,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,309 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]. [2025-03-17 19:23:31,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:23:31,324 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:23:31,324 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:23:31,324 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:23:31,325 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (1/1) ... [2025-03-17 19:23:31,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:23:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:31,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:23:31,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:23:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 19:23:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 19:23:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 19:23:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 19:23:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:23:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:23:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:23:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:23:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:23:31,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:23:31,371 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:23:31,459 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:23:31,460 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:23:31,634 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:23:31,635 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:23:31,727 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:23:31,727 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:23:31,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:23:31 BoogieIcfgContainer [2025-03-17 19:23:31,728 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:23:31,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:23:31,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:23:31,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:23:31,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:23:30" (1/3) ... [2025-03-17 19:23:31,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538f310b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:23:31, skipping insertion in model container [2025-03-17 19:23:31,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:23:31" (2/3) ... [2025-03-17 19:23:31,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538f310b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:23:31, skipping insertion in model container [2025-03-17 19:23:31,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:23:31" (3/3) ... [2025-03-17 19:23:31,736 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2025-03-17 19:23:31,747 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:23:31,748 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-5.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-17 19:23:31,748 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:23:31,781 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:23:31,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-03-17 19:23:31,828 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-03-17 19:23:31,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:23:31,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 121 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-17 19:23:31,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-03-17 19:23:31,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-03-17 19:23:31,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:23:31,854 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;@55fefbae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:23:31,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-17 19:23:31,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:23:31,859 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:23:31,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:23:31,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:31,860 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:31,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:31,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:31,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2073076800, now seen corresponding path program 1 times [2025-03-17 19:23:31,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:31,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522976143] [2025-03-17 19:23:31,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:31,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:23:31,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:23:31,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:31,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:32,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522976143] [2025-03-17 19:23:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522976143] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:32,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979352228] [2025-03-17 19:23:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:32,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:32,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:32,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:32,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:32,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:32,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:32,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:32,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:32,386 INFO L124 PetriNetUnfolderBase]: 785/1506 cut-off events. [2025-03-17 19:23:32,386 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:23:32,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 1506 events. 785/1506 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9264 event pairs, 188 based on Foata normal form. 0/1151 useless extension candidates. Maximal degree in co-relation 2701. Up to 612 conditions per place. [2025-03-17 19:23:32,402 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-03-17 19:23:32,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-03-17 19:23:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-17 19:23:32,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-03-17 19:23:32,416 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-03-17 19:23:32,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-03-17 19:23:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:32,424 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-03-17 19:23:32,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-03-17 19:23:32,428 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-17 19:23:32,428 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-03-17 19:23:32,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:32,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:32,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:32,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:23:32,429 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:32,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash -638010556, now seen corresponding path program 1 times [2025-03-17 19:23:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331901183] [2025-03-17 19:23:32,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:32,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:23:32,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:23:32,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:32,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:32,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:32,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331901183] [2025-03-17 19:23:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331901183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:32,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392153929] [2025-03-17 19:23:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:32,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:32,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:32,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:32,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:32,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-17 19:23:32,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:32,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:32,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-17 19:23:32,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:32,782 INFO L124 PetriNetUnfolderBase]: 1057/1794 cut-off events. [2025-03-17 19:23:32,782 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2025-03-17 19:23:32,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 1794 events. 1057/1794 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10382 event pairs, 261 based on Foata normal form. 88/1559 useless extension candidates. Maximal degree in co-relation 3929. Up to 935 conditions per place. [2025-03-17 19:23:32,793 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-03-17 19:23:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 329 flow [2025-03-17 19:23:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-03-17 19:23:32,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-17 19:23:32,794 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 128 transitions. [2025-03-17 19:23:32,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 329 flow [2025-03-17 19:23:32,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 329 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:23:32,797 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2025-03-17 19:23:32,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2025-03-17 19:23:32,800 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-03-17 19:23:32,800 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2025-03-17 19:23:32,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:32,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:32,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:32,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:23:32,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:32,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -665946343, now seen corresponding path program 1 times [2025-03-17 19:23:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259312106] [2025-03-17 19:23:32,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:32,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:23:32,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:23:32,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:32,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:32,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:32,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259312106] [2025-03-17 19:23:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259312106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:32,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:32,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:23:32,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145184371] [2025-03-17 19:23:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:32,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:23:32,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:32,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:23:32,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:23:32,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-17 19:23:32,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:32,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:32,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-17 19:23:32,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:33,095 INFO L124 PetriNetUnfolderBase]: 1381/2558 cut-off events. [2025-03-17 19:23:33,096 INFO L125 PetriNetUnfolderBase]: For 593/786 co-relation queries the response was YES. [2025-03-17 19:23:33,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2558 events. 1381/2558 cut-off events. For 593/786 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17563 event pairs, 468 based on Foata normal form. 120/2206 useless extension candidates. Maximal degree in co-relation 5737. Up to 1179 conditions per place. [2025-03-17 19:23:33,110 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-03-17 19:23:33,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 310 flow [2025-03-17 19:23:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:23:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:23:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-17 19:23:33,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-17 19:23:33,113 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 97 transitions. [2025-03-17 19:23:33,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 310 flow [2025-03-17 19:23:33,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:23:33,116 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-03-17 19:23:33,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-03-17 19:23:33,117 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-03-17 19:23:33,118 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-03-17 19:23:33,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:33,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:33,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:33,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:23:33,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:33,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 830500029, now seen corresponding path program 1 times [2025-03-17 19:23:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108159441] [2025-03-17 19:23:33,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:33,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:23:33,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:23:33,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:33,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:33,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108159441] [2025-03-17 19:23:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108159441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:33,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:33,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:23:33,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763219444] [2025-03-17 19:23:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:33,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:23:33,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:33,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:23:33,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:23:33,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-17 19:23:33,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:33,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:33,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-17 19:23:33,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:33,364 INFO L124 PetriNetUnfolderBase]: 1381/2551 cut-off events. [2025-03-17 19:23:33,364 INFO L125 PetriNetUnfolderBase]: For 717/910 co-relation queries the response was YES. [2025-03-17 19:23:33,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5934 conditions, 2551 events. 1381/2551 cut-off events. For 717/910 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17505 event pairs, 468 based on Foata normal form. 111/2190 useless extension candidates. Maximal degree in co-relation 5910. Up to 1179 conditions per place. [2025-03-17 19:23:33,395 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-03-17 19:23:33,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 317 flow [2025-03-17 19:23:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:23:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:23:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-17 19:23:33,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-17 19:23:33,398 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-03-17 19:23:33,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 317 flow [2025-03-17 19:23:33,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:23:33,400 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-03-17 19:23:33,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-03-17 19:23:33,400 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-17 19:23:33,400 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-03-17 19:23:33,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:33,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:33,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:33,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:23:33,401 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:33,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash -24302621, now seen corresponding path program 1 times [2025-03-17 19:23:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:33,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897786168] [2025-03-17 19:23:33,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:33,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:33,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:23:33,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:23:33,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:33,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:33,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897786168] [2025-03-17 19:23:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897786168] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:33,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:33,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231717751] [2025-03-17 19:23:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:33,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:33,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:33,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:33,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-17 19:23:33,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2025-03-17 19:23:33,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:33,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-17 19:23:33,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:33,671 INFO L124 PetriNetUnfolderBase]: 1257/2365 cut-off events. [2025-03-17 19:23:33,672 INFO L125 PetriNetUnfolderBase]: For 792/967 co-relation queries the response was YES. [2025-03-17 19:23:33,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 2365 events. 1257/2365 cut-off events. For 792/967 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15995 event pairs, 159 based on Foata normal form. 183/2131 useless extension candidates. Maximal degree in co-relation 5571. Up to 1365 conditions per place. [2025-03-17 19:23:33,683 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2025-03-17 19:23:33,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 407 flow [2025-03-17 19:23:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-17 19:23:33,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-17 19:23:33,684 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-03-17 19:23:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 407 flow [2025-03-17 19:23:33,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:33,686 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 175 flow [2025-03-17 19:23:33,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2025-03-17 19:23:33,686 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-17 19:23:33,686 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 175 flow [2025-03-17 19:23:33,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2025-03-17 19:23:33,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:33,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:33,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:23:33,687 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:33,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2204279, now seen corresponding path program 1 times [2025-03-17 19:23:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:33,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761683160] [2025-03-17 19:23:33,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:33,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:33,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:23:33,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:23:33,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:33,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761683160] [2025-03-17 19:23:33,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761683160] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:33,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:33,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:33,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49742719] [2025-03-17 19:23:33,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:33,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:33,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:33,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:33,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-17 19:23:33,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:33,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:33,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-17 19:23:33,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:34,050 INFO L124 PetriNetUnfolderBase]: 2065/3462 cut-off events. [2025-03-17 19:23:34,050 INFO L125 PetriNetUnfolderBase]: For 2092/2760 co-relation queries the response was YES. [2025-03-17 19:23:34,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9166 conditions, 3462 events. 2065/3462 cut-off events. For 2092/2760 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22650 event pairs, 457 based on Foata normal form. 255/3146 useless extension candidates. Maximal degree in co-relation 9138. Up to 2001 conditions per place. [2025-03-17 19:23:34,071 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 68 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2025-03-17 19:23:34,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 457 flow [2025-03-17 19:23:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-17 19:23:34,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-17 19:23:34,072 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 175 flow. Second operand 4 states and 124 transitions. [2025-03-17 19:23:34,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 457 flow [2025-03-17 19:23:34,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:34,075 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 195 flow [2025-03-17 19:23:34,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2025-03-17 19:23:34,075 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2025-03-17 19:23:34,075 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 195 flow [2025-03-17 19:23:34,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:34,077 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:34,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:23:34,077 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:34,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1775597591, now seen corresponding path program 1 times [2025-03-17 19:23:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:34,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586561612] [2025-03-17 19:23:34,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:34,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:34,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:23:34,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:23:34,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:34,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:34,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586561612] [2025-03-17 19:23:34,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586561612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:34,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:23:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669306286] [2025-03-17 19:23:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:34,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:23:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:34,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:23:34,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:23:34,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:34,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:34,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:34,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:34,358 INFO L124 PetriNetUnfolderBase]: 1279/2478 cut-off events. [2025-03-17 19:23:34,359 INFO L125 PetriNetUnfolderBase]: For 1291/1650 co-relation queries the response was YES. [2025-03-17 19:23:34,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6721 conditions, 2478 events. 1279/2478 cut-off events. For 1291/1650 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16646 event pairs, 183 based on Foata normal form. 56/2173 useless extension candidates. Maximal degree in co-relation 6691. Up to 954 conditions per place. [2025-03-17 19:23:34,370 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-03-17 19:23:34,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 506 flow [2025-03-17 19:23:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:23:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:23:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-17 19:23:34,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-17 19:23:34,372 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 195 flow. Second operand 5 states and 160 transitions. [2025-03-17 19:23:34,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 506 flow [2025-03-17 19:23:34,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:23:34,378 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-03-17 19:23:34,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2025-03-17 19:23:34,378 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-03-17 19:23:34,378 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-03-17 19:23:34,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:34,379 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:34,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:23:34,379 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:34,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 499705842, now seen corresponding path program 1 times [2025-03-17 19:23:34,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568756394] [2025-03-17 19:23:34,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:34,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:34,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:23:34,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:23:34,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:34,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:34,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:34,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568756394] [2025-03-17 19:23:34,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568756394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:34,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:34,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:23:34,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759096479] [2025-03-17 19:23:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:34,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:23:34,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:34,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:23:34,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:23:34,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:34,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:34,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:34,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:34,644 INFO L124 PetriNetUnfolderBase]: 1331/2624 cut-off events. [2025-03-17 19:23:34,645 INFO L125 PetriNetUnfolderBase]: For 1959/2239 co-relation queries the response was YES. [2025-03-17 19:23:34,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 2624 events. 1331/2624 cut-off events. For 1959/2239 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18057 event pairs, 255 based on Foata normal form. 90/2529 useless extension candidates. Maximal degree in co-relation 7391. Up to 1260 conditions per place. [2025-03-17 19:23:34,658 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-17 19:23:34,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-03-17 19:23:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:23:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:23:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-03-17 19:23:34,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-03-17 19:23:34,660 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-03-17 19:23:34,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-03-17 19:23:34,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:34,664 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-03-17 19:23:34,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2025-03-17 19:23:34,664 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-03-17 19:23:34,664 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-03-17 19:23:34,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:34,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:34,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:23:34,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:34,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1540021445, now seen corresponding path program 1 times [2025-03-17 19:23:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938201181] [2025-03-17 19:23:34,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:34,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:34,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:23:34,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:23:34,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:34,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:34,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938201181] [2025-03-17 19:23:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938201181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:23:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23624267] [2025-03-17 19:23:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:34,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:23:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:34,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:23:34,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:23:34,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:34,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:34,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:34,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:34,897 INFO L124 PetriNetUnfolderBase]: 1187/2352 cut-off events. [2025-03-17 19:23:34,897 INFO L125 PetriNetUnfolderBase]: For 2370/2623 co-relation queries the response was YES. [2025-03-17 19:23:34,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 2352 events. 1187/2352 cut-off events. For 2370/2623 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15920 event pairs, 303 based on Foata normal form. 88/2287 useless extension candidates. Maximal degree in co-relation 6929. Up to 1384 conditions per place. [2025-03-17 19:23:34,925 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-03-17 19:23:34,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-03-17 19:23:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:23:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:23:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-17 19:23:34,926 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-03-17 19:23:34,926 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-03-17 19:23:34,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-03-17 19:23:34,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 449 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:34,929 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-03-17 19:23:34,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2025-03-17 19:23:34,930 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-03-17 19:23:34,930 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-03-17 19:23:34,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:34,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:34,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:23:34,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:34,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash 500043762, now seen corresponding path program 1 times [2025-03-17 19:23:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314573877] [2025-03-17 19:23:34,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:34,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:23:34,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:23:34,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:34,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:34,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314573877] [2025-03-17 19:23:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314573877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:34,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:23:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474007598] [2025-03-17 19:23:34,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:34,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:23:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:34,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:23:34,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:23:34,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:34,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:34,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:34,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:34,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:35,227 INFO L124 PetriNetUnfolderBase]: 1235/2440 cut-off events. [2025-03-17 19:23:35,227 INFO L125 PetriNetUnfolderBase]: For 2795/3057 co-relation queries the response was YES. [2025-03-17 19:23:35,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 2440 events. 1235/2440 cut-off events. For 2795/3057 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 16528 event pairs, 295 based on Foata normal form. 88/2431 useless extension candidates. Maximal degree in co-relation 7255. Up to 1400 conditions per place. [2025-03-17 19:23:35,243 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-03-17 19:23:35,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-03-17 19:23:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:23:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:23:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-03-17 19:23:35,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-03-17 19:23:35,245 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-03-17 19:23:35,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-03-17 19:23:35,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:23:35,250 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-03-17 19:23:35,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-03-17 19:23:35,250 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-17 19:23:35,250 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-03-17 19:23:35,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:35,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:35,251 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:35,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:23:35,251 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:35,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1009020163, now seen corresponding path program 1 times [2025-03-17 19:23:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:35,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774135791] [2025-03-17 19:23:35,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:35,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:23:35,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:23:35,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:35,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:35,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774135791] [2025-03-17 19:23:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774135791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84491901] [2025-03-17 19:23:35,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:35,306 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) [2025-03-17 19:23:35,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:23:35,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:23:35,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:23:35,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:35,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:35,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:23:35,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:35,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:23:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84491901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:35,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:23:35,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:23:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107999919] [2025-03-17 19:23:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:35,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:23:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:35,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:23:35,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:23:35,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-17 19:23:35,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:35,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:35,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-17 19:23:35,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:35,699 INFO L124 PetriNetUnfolderBase]: 1657/2878 cut-off events. [2025-03-17 19:23:35,700 INFO L125 PetriNetUnfolderBase]: For 4686/5154 co-relation queries the response was YES. [2025-03-17 19:23:35,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9305 conditions, 2878 events. 1657/2878 cut-off events. For 4686/5154 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18336 event pairs, 359 based on Foata normal form. 138/2914 useless extension candidates. Maximal degree in co-relation 9270. Up to 1194 conditions per place. [2025-03-17 19:23:35,714 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2025-03-17 19:23:35,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 701 flow [2025-03-17 19:23:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:23:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:23:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-17 19:23:35,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-17 19:23:35,716 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 6 states and 170 transitions. [2025-03-17 19:23:35,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 701 flow [2025-03-17 19:23:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 690 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:35,720 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 260 flow [2025-03-17 19:23:35,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2025-03-17 19:23:35,721 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-03-17 19:23:35,721 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 260 flow [2025-03-17 19:23:35,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:35,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:35,721 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:35,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:23:35,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 19:23:35,925 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:35,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1850290601, now seen corresponding path program 1 times [2025-03-17 19:23:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71091225] [2025-03-17 19:23:35,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:35,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:23:35,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:23:35,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:35,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71091225] [2025-03-17 19:23:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71091225] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341383634] [2025-03-17 19:23:35,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:35,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:35,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:35,999 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) [2025-03-17 19:23:36,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:23:36,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:23:36,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:23:36,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:36,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:36,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:23:36,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:36,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:23:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341383634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:36,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:23:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-17 19:23:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669127815] [2025-03-17 19:23:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:36,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:36,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:36,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:36,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:23:36,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-17 19:23:36,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:36,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:36,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-17 19:23:36,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:36,278 INFO L124 PetriNetUnfolderBase]: 1235/2529 cut-off events. [2025-03-17 19:23:36,278 INFO L125 PetriNetUnfolderBase]: For 4234/4437 co-relation queries the response was YES. [2025-03-17 19:23:36,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 2529 events. 1235/2529 cut-off events. For 4234/4437 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18003 event pairs, 187 based on Foata normal form. 124/2616 useless extension candidates. Maximal degree in co-relation 7648. Up to 1444 conditions per place. [2025-03-17 19:23:36,293 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2025-03-17 19:23:36,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 505 flow [2025-03-17 19:23:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-17 19:23:36,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-17 19:23:36,295 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 260 flow. Second operand 4 states and 111 transitions. [2025-03-17 19:23:36,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 505 flow [2025-03-17 19:23:36,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 499 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:36,299 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 255 flow [2025-03-17 19:23:36,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-03-17 19:23:36,300 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-03-17 19:23:36,300 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 255 flow [2025-03-17 19:23:36,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:36,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:36,300 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:36,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:23:36,500 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,SelfDestructingSolverStorable11 [2025-03-17 19:23:36,501 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:36,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1214854205, now seen corresponding path program 1 times [2025-03-17 19:23:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:36,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973249370] [2025-03-17 19:23:36,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:36,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:23:36,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:23:36,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:36,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:23:36,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:36,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973249370] [2025-03-17 19:23:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973249370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:36,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:36,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508326789] [2025-03-17 19:23:36,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:36,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:36,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:36,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:36,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-17 19:23:36,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:36,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:36,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-17 19:23:36,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:36,743 INFO L124 PetriNetUnfolderBase]: 1837/3197 cut-off events. [2025-03-17 19:23:36,743 INFO L125 PetriNetUnfolderBase]: For 5250/5545 co-relation queries the response was YES. [2025-03-17 19:23:36,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10375 conditions, 3197 events. 1837/3197 cut-off events. For 5250/5545 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20348 event pairs, 893 based on Foata normal form. 130/3272 useless extension candidates. Maximal degree in co-relation 10340. Up to 1765 conditions per place. [2025-03-17 19:23:36,759 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 73 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2025-03-17 19:23:36,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 591 flow [2025-03-17 19:23:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-17 19:23:36,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-03-17 19:23:36,760 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 255 flow. Second operand 4 states and 117 transitions. [2025-03-17 19:23:36,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 591 flow [2025-03-17 19:23:36,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 582 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:36,765 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 264 flow [2025-03-17 19:23:36,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-03-17 19:23:36,766 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-03-17 19:23:36,766 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 264 flow [2025-03-17 19:23:36,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:36,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:36,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:36,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:23:36,766 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:36,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1524433965, now seen corresponding path program 1 times [2025-03-17 19:23:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088200416] [2025-03-17 19:23:36,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:36,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:23:36,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:23:36,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:36,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088200416] [2025-03-17 19:23:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088200416] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208696665] [2025-03-17 19:23:36,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:36,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:36,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:36,816 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) [2025-03-17 19:23:36,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:23:36,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:23:36,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:23:36,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:36,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:36,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:23:36,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:36,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:23:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208696665] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:23:36,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:23:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-17 19:23:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666453615] [2025-03-17 19:23:36,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:23:36,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 19:23:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:36,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 19:23:36,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:23:36,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-17 19:23:36,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:36,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:36,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-17 19:23:36,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:37,528 INFO L124 PetriNetUnfolderBase]: 3515/6772 cut-off events. [2025-03-17 19:23:37,528 INFO L125 PetriNetUnfolderBase]: For 13266/13814 co-relation queries the response was YES. [2025-03-17 19:23:37,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20644 conditions, 6772 events. 3515/6772 cut-off events. For 13266/13814 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52688 event pairs, 187 based on Foata normal form. 402/7143 useless extension candidates. Maximal degree in co-relation 20609. Up to 1445 conditions per place. [2025-03-17 19:23:37,557 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-03-17 19:23:37,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 1120 flow [2025-03-17 19:23:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:23:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:23:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-03-17 19:23:37,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-03-17 19:23:37,559 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 264 flow. Second operand 6 states and 195 transitions. [2025-03-17 19:23:37,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 156 transitions, 1120 flow [2025-03-17 19:23:37,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 1104 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:37,566 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 292 flow [2025-03-17 19:23:37,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-03-17 19:23:37,566 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-17 19:23:37,566 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 292 flow [2025-03-17 19:23:37,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:37,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:37,567 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:37,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:23:37,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:37,767 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:37,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:37,768 INFO L85 PathProgramCache]: Analyzing trace with hash 12812915, now seen corresponding path program 1 times [2025-03-17 19:23:37,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:37,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032784114] [2025-03-17 19:23:37,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:37,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:37,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:23:37,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:23:37,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:37,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:23:37,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032784114] [2025-03-17 19:23:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032784114] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666110177] [2025-03-17 19:23:37,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:37,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:37,822 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) [2025-03-17 19:23:37,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:23:37,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:23:37,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:23:37,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:37,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:37,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:23:37,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:23:37,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:23:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666110177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:37,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:23:37,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:23:37,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330734440] [2025-03-17 19:23:37,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:37,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:23:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:37,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:23:37,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:23:37,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-17 19:23:37,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:37,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:37,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-17 19:23:37,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:38,434 INFO L124 PetriNetUnfolderBase]: 3819/6848 cut-off events. [2025-03-17 19:23:38,434 INFO L125 PetriNetUnfolderBase]: For 14764/15364 co-relation queries the response was YES. [2025-03-17 19:23:38,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22346 conditions, 6848 events. 3819/6848 cut-off events. For 14764/15364 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 50070 event pairs, 187 based on Foata normal form. 418/7007 useless extension candidates. Maximal degree in co-relation 22307. Up to 3648 conditions per place. [2025-03-17 19:23:38,475 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2025-03-17 19:23:38,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 895 flow [2025-03-17 19:23:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:23:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:23:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-03-17 19:23:38,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-03-17 19:23:38,476 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 292 flow. Second operand 6 states and 167 transitions. [2025-03-17 19:23:38,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 895 flow [2025-03-17 19:23:38,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 883 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:38,485 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 292 flow [2025-03-17 19:23:38,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2025-03-17 19:23:38,486 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-03-17 19:23:38,486 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 292 flow [2025-03-17 19:23:38,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:38,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:38,486 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:38,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:23:38,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 19:23:38,687 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:38,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash 907754235, now seen corresponding path program 1 times [2025-03-17 19:23:38,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:38,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229517586] [2025-03-17 19:23:38,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:38,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:23:38,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:23:38,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:38,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:23:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229517586] [2025-03-17 19:23:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229517586] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839612250] [2025-03-17 19:23:38,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:38,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:38,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:38,730 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) [2025-03-17 19:23:38,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:23:38,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:23:38,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:23:38,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:38,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:38,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:23:38,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:23:38,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:23:38,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839612250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:38,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:23:38,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:23:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256807346] [2025-03-17 19:23:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:38,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:23:38,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:38,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:23:38,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:23:38,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-17 19:23:38,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:38,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:38,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-17 19:23:38,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:39,290 INFO L124 PetriNetUnfolderBase]: 4507/7614 cut-off events. [2025-03-17 19:23:39,290 INFO L125 PetriNetUnfolderBase]: For 16235/16487 co-relation queries the response was YES. [2025-03-17 19:23:39,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25730 conditions, 7614 events. 4507/7614 cut-off events. For 16235/16487 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 52577 event pairs, 999 based on Foata normal form. 198/7515 useless extension candidates. Maximal degree in co-relation 25691. Up to 3212 conditions per place. [2025-03-17 19:23:39,327 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2025-03-17 19:23:39,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 827 flow [2025-03-17 19:23:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:23:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:23:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-03-17 19:23:39,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-17 19:23:39,328 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 292 flow. Second operand 6 states and 164 transitions. [2025-03-17 19:23:39,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 827 flow [2025-03-17 19:23:39,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 813 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:39,336 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-03-17 19:23:39,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=82, PETRI_TRANSITIONS=55} [2025-03-17 19:23:39,337 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-03-17 19:23:39,337 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-03-17 19:23:39,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:39,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:39,337 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:39,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:23:39,537 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,SelfDestructingSolverStorable15 [2025-03-17 19:23:39,537 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:39,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1485803986, now seen corresponding path program 1 times [2025-03-17 19:23:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:39,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123317673] [2025-03-17 19:23:39,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:39,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:23:39,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:23:39,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:39,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:39,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123317673] [2025-03-17 19:23:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123317673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035962910] [2025-03-17 19:23:39,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:39,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:39,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:39,587 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) [2025-03-17 19:23:39,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:23:39,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:23:39,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:23:39,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:39,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:39,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:23:39,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:39,697 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:23:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035962910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:39,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:23:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-03-17 19:23:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567623275] [2025-03-17 19:23:39,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:39,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:23:39,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:39,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:23:39,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:23:39,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:39,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 55 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:39,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:39,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:39,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:40,116 INFO L124 PetriNetUnfolderBase]: 3979/7356 cut-off events. [2025-03-17 19:23:40,117 INFO L125 PetriNetUnfolderBase]: For 16873/17218 co-relation queries the response was YES. [2025-03-17 19:23:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24971 conditions, 7356 events. 3979/7356 cut-off events. For 16873/17218 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 53915 event pairs, 905 based on Foata normal form. 440/7707 useless extension candidates. Maximal degree in co-relation 24932. Up to 2912 conditions per place. [2025-03-17 19:23:40,165 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 70 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2025-03-17 19:23:40,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 665 flow [2025-03-17 19:23:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:23:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:23:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-17 19:23:40,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-17 19:23:40,167 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 6 states and 170 transitions. [2025-03-17 19:23:40,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 665 flow [2025-03-17 19:23:40,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 655 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:23:40,182 INFO L231 Difference]: Finished difference. Result has 83 places, 55 transitions, 316 flow [2025-03-17 19:23:40,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2025-03-17 19:23:40,182 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2025-03-17 19:23:40,182 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 316 flow [2025-03-17 19:23:40,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:40,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:40,182 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:40,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 19:23:40,383 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,SelfDestructingSolverStorable16 [2025-03-17 19:23:40,383 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:40,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash -819738449, now seen corresponding path program 1 times [2025-03-17 19:23:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:40,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632085897] [2025-03-17 19:23:40,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:40,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:40,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:23:40,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:23:40,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:40,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632085897] [2025-03-17 19:23:40,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632085897] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145353459] [2025-03-17 19:23:40,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:40,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:40,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:40,436 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) [2025-03-17 19:23:40,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:23:40,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:23:40,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:23:40,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:40,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:40,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:23:40,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:40,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:23:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145353459] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:23:40,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:23:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-17 19:23:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917136166] [2025-03-17 19:23:40,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:23:40,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 19:23:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:40,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 19:23:40,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-03-17 19:23:40,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:40,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 316 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:40,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:40,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:40,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:42,514 INFO L124 PetriNetUnfolderBase]: 11473/22876 cut-off events. [2025-03-17 19:23:42,514 INFO L125 PetriNetUnfolderBase]: For 65429/66417 co-relation queries the response was YES. [2025-03-17 19:23:42,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78249 conditions, 22876 events. 11473/22876 cut-off events. For 65429/66417 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 207881 event pairs, 615 based on Foata normal form. 1586/24333 useless extension candidates. Maximal degree in co-relation 78208. Up to 4815 conditions per place. [2025-03-17 19:23:42,655 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 348 selfloop transitions, 47 changer transitions 0/410 dead transitions. [2025-03-17 19:23:42,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 410 transitions, 3139 flow [2025-03-17 19:23:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 19:23:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-17 19:23:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-03-17 19:23:42,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-17 19:23:42,657 INFO L175 Difference]: Start difference. First operand has 83 places, 55 transitions, 316 flow. Second operand 24 states and 748 transitions. [2025-03-17 19:23:42,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 410 transitions, 3139 flow [2025-03-17 19:23:42,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 410 transitions, 3090 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:42,726 INFO L231 Difference]: Finished difference. Result has 116 places, 95 transitions, 874 flow [2025-03-17 19:23:42,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=874, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2025-03-17 19:23:42,727 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2025-03-17 19:23:42,727 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 95 transitions, 874 flow [2025-03-17 19:23:42,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:42,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:42,727 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:42,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:23:42,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:42,931 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:42,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash 397200565, now seen corresponding path program 1 times [2025-03-17 19:23:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155636600] [2025-03-17 19:23:42,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:42,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:23:42,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:23:42,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:42,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:23:42,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:42,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155636600] [2025-03-17 19:23:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155636600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:42,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:42,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:42,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187380907] [2025-03-17 19:23:42,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:42,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:42,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:42,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:42,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-17 19:23:42,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 95 transitions, 874 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2025-03-17 19:23:42,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:42,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-17 19:23:42,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:44,971 INFO L124 PetriNetUnfolderBase]: 14073/23733 cut-off events. [2025-03-17 19:23:44,972 INFO L125 PetriNetUnfolderBase]: For 249792/250843 co-relation queries the response was YES. [2025-03-17 19:23:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107594 conditions, 23733 events. 14073/23733 cut-off events. For 249792/250843 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 189977 event pairs, 2570 based on Foata normal form. 783/24346 useless extension candidates. Maximal degree in co-relation 107539. Up to 12497 conditions per place. [2025-03-17 19:23:45,132 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 197 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2025-03-17 19:23:45,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 219 transitions, 2712 flow [2025-03-17 19:23:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:45,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-17 19:23:45,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-17 19:23:45,134 INFO L175 Difference]: Start difference. First operand has 116 places, 95 transitions, 874 flow. Second operand 4 states and 110 transitions. [2025-03-17 19:23:45,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 219 transitions, 2712 flow [2025-03-17 19:23:45,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 219 transitions, 2142 flow, removed 238 selfloop flow, removed 9 redundant places. [2025-03-17 19:23:45,397 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 698 flow [2025-03-17 19:23:45,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2025-03-17 19:23:45,397 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-03-17 19:23:45,397 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 698 flow [2025-03-17 19:23:45,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2025-03-17 19:23:45,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:45,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:45,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:23:45,398 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:45,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1924389552, now seen corresponding path program 1 times [2025-03-17 19:23:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13398646] [2025-03-17 19:23:45,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:45,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:45,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:23:45,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:23:45,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:45,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:23:45,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:45,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13398646] [2025-03-17 19:23:45,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13398646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:23:45,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:23:45,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:23:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136873959] [2025-03-17 19:23:45,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:23:45,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:23:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:45,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:23:45,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:23:45,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-17 19:23:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-17 19:23:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:47,716 INFO L124 PetriNetUnfolderBase]: 18183/30302 cut-off events. [2025-03-17 19:23:47,716 INFO L125 PetriNetUnfolderBase]: For 207047/207047 co-relation queries the response was YES. [2025-03-17 19:23:47,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123207 conditions, 30302 events. 18183/30302 cut-off events. For 207047/207047 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 245442 event pairs, 7030 based on Foata normal form. 1056/30620 useless extension candidates. Maximal degree in co-relation 123155. Up to 13973 conditions per place. [2025-03-17 19:23:47,970 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 150 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2025-03-17 19:23:47,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 167 transitions, 1550 flow [2025-03-17 19:23:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:23:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:23:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-17 19:23:47,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-03-17 19:23:47,971 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 698 flow. Second operand 4 states and 109 transitions. [2025-03-17 19:23:47,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 167 transitions, 1550 flow [2025-03-17 19:23:48,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 167 transitions, 1508 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:23:48,374 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 696 flow [2025-03-17 19:23:48,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=696, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2025-03-17 19:23:48,375 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-03-17 19:23:48,375 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 696 flow [2025-03-17 19:23:48,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:48,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:48,375 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:48,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:23:48,375 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:48,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash -941257590, now seen corresponding path program 1 times [2025-03-17 19:23:48,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:48,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939697398] [2025-03-17 19:23:48,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:48,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:48,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:23:48,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:23:48,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:48,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939697398] [2025-03-17 19:23:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939697398] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619060982] [2025-03-17 19:23:48,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:48,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:48,445 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) [2025-03-17 19:23:48,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:23:48,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:23:48,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:23:48,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:48,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:48,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:23:48,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:48,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:23:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619060982] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:23:48,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:23:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-17 19:23:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554730533] [2025-03-17 19:23:48,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:23:48,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 19:23:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:48,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 19:23:48,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-03-17 19:23:48,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 696 flow. Second operand has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:51,872 INFO L124 PetriNetUnfolderBase]: 16225/31342 cut-off events. [2025-03-17 19:23:51,872 INFO L125 PetriNetUnfolderBase]: For 314419/314419 co-relation queries the response was YES. [2025-03-17 19:23:52,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128307 conditions, 31342 events. 16225/31342 cut-off events. For 314419/314419 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 287511 event pairs, 659 based on Foata normal form. 1108/32211 useless extension candidates. Maximal degree in co-relation 128254. Up to 9039 conditions per place. [2025-03-17 19:23:52,145 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 322 selfloop transitions, 54 changer transitions 0/391 dead transitions. [2025-03-17 19:23:52,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 391 transitions, 3183 flow [2025-03-17 19:23:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:23:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:23:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-03-17 19:23:52,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-03-17 19:23:52,148 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 696 flow. Second operand 21 states and 649 transitions. [2025-03-17 19:23:52,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 391 transitions, 3183 flow [2025-03-17 19:23:52,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 391 transitions, 3158 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 19:23:52,600 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 1090 flow [2025-03-17 19:23:52,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1090, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2025-03-17 19:23:52,601 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 87 predicate places. [2025-03-17 19:23:52,601 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 1090 flow [2025-03-17 19:23:52,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:52,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:23:52,601 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:23:52,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 19:23:52,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-17 19:23:52,802 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:23:52,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:23:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1678961678, now seen corresponding path program 1 times [2025-03-17 19:23:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:23:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017194477] [2025-03-17 19:23:52,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:23:52,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:23:52,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:23:52,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:52,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:52,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:23:52,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017194477] [2025-03-17 19:23:52,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017194477] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:23:52,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681247168] [2025-03-17 19:23:52,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:23:52,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:23:52,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:23:52,882 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) [2025-03-17 19:23:52,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:23:52,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:23:52,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:23:52,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:23:52,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:23:52,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 19:23:52,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:23:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:53,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:23:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:23:53,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681247168] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:23:53,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:23:53,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-03-17 19:23:53,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834812491] [2025-03-17 19:23:53,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:23:53,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 19:23:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:23:53,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 19:23:53,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-03-17 19:23:53,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:23:53,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 1090 flow. Second operand has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:23:53,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:23:53,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:23:53,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:23:59,675 INFO L124 PetriNetUnfolderBase]: 30701/59524 cut-off events. [2025-03-17 19:23:59,675 INFO L125 PetriNetUnfolderBase]: For 1105722/1105722 co-relation queries the response was YES. [2025-03-17 19:24:00,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244799 conditions, 59524 events. 30701/59524 cut-off events. For 1105722/1105722 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 589926 event pairs, 1517 based on Foata normal form. 3652/62915 useless extension candidates. Maximal degree in co-relation 244738. Up to 8063 conditions per place. [2025-03-17 19:24:00,438 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 555 selfloop transitions, 118 changer transitions 0/688 dead transitions. [2025-03-17 19:24:00,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 688 transitions, 6001 flow [2025-03-17 19:24:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 19:24:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-17 19:24:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-03-17 19:24:00,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-03-17 19:24:00,441 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 1090 flow. Second operand 37 states and 1156 transitions. [2025-03-17 19:24:00,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 688 transitions, 6001 flow [2025-03-17 19:24:02,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 688 transitions, 5859 flow, removed 50 selfloop flow, removed 13 redundant places. [2025-03-17 19:24:02,384 INFO L231 Difference]: Finished difference. Result has 170 places, 174 transitions, 2089 flow [2025-03-17 19:24:02,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2089, PETRI_PLACES=170, PETRI_TRANSITIONS=174} [2025-03-17 19:24:02,385 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2025-03-17 19:24:02,385 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 174 transitions, 2089 flow [2025-03-17 19:24:02,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:02,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:02,385 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:02,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 19:24:02,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:02,586 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:24:02,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1922250941, now seen corresponding path program 2 times [2025-03-17 19:24:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488637160] [2025-03-17 19:24:02,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:24:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:02,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 19:24:02,597 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 19:24:02,597 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:24:02,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488637160] [2025-03-17 19:24:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488637160] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345297052] [2025-03-17 19:24:02,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:24:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:02,693 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) [2025-03-17 19:24:02,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:24:02,723 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 19:24:02,734 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 19:24:02,734 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:24:02,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:02,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 19:24:02,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:02,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:24:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345297052] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:24:02,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:24:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-03-17 19:24:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461662507] [2025-03-17 19:24:02,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:24:02,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 19:24:02,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:02,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 19:24:02,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-03-17 19:24:02,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-17 19:24:02,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 174 transitions, 2089 flow. Second operand has 17 states, 17 states have (on average 19.88235294117647) internal successors, (338), 17 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:02,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:02,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-17 19:24:02,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:22,069 INFO L124 PetriNetUnfolderBase]: 89207/149609 cut-off events. [2025-03-17 19:24:22,069 INFO L125 PetriNetUnfolderBase]: For 3563513/3563513 co-relation queries the response was YES. [2025-03-17 19:24:24,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748053 conditions, 149609 events. 89207/149609 cut-off events. For 3563513/3563513 co-relation queries the response was YES. Maximal size of possible extension queue 2219. Compared 1414729 event pairs, 2709 based on Foata normal form. 4188/153576 useless extension candidates. Maximal degree in co-relation 747976. Up to 19341 conditions per place. [2025-03-17 19:24:24,903 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 1611 selfloop transitions, 11 changer transitions 0/1635 dead transitions. [2025-03-17 19:24:24,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 1635 transitions, 24739 flow [2025-03-17 19:24:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:24:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:24:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 379 transitions. [2025-03-17 19:24:24,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7178030303030303 [2025-03-17 19:24:24,904 INFO L175 Difference]: Start difference. First operand has 170 places, 174 transitions, 2089 flow. Second operand 12 states and 379 transitions. [2025-03-17 19:24:24,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 1635 transitions, 24739 flow [2025-03-17 19:24:28,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 1635 transitions, 21676 flow, removed 1331 selfloop flow, removed 13 redundant places. [2025-03-17 19:24:28,012 INFO L231 Difference]: Finished difference. Result has 174 places, 180 transitions, 1890 flow [2025-03-17 19:24:28,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1890, PETRI_PLACES=174, PETRI_TRANSITIONS=180} [2025-03-17 19:24:28,013 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2025-03-17 19:24:28,013 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 180 transitions, 1890 flow [2025-03-17 19:24:28,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.88235294117647) internal successors, (338), 17 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:28,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:28,013 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:28,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 19:24:28,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-17 19:24:28,214 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-17 19:24:28,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash -488513786, now seen corresponding path program 2 times [2025-03-17 19:24:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:28,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631968814] [2025-03-17 19:24:28,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:24:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:28,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 19:24:28,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:24:28,223 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:24:28,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:24:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631968814] [2025-03-17 19:24:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631968814] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029118289] [2025-03-17 19:24:28,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:24:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:28,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:28,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:24:28,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 19:24:28,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:24:28,334 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:24:28,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:28,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:24:28,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:24:28,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:24:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:24:28,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029118289] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:24:28,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:24:28,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-03-17 19:24:28,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089991735] [2025-03-17 19:24:28,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:24:28,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 19:24:28,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:28,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 19:24:28,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2025-03-17 19:24:28,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-17 19:24:28,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 180 transitions, 1890 flow. Second operand has 22 states, 22 states have (on average 21.454545454545453) internal successors, (472), 22 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:28,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:28,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-17 19:24:28,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand