./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.c -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 f4443c7da5298ac603586799640102b5bfbd455269f211f15877108d6d955b4a --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:00:54,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:00:54,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-29 11:00:54,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:00:54,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:00:54,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:00:54,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:00:54,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:00:54,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:00:54,211 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:00:54,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:00:54,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:00:54,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:00:54,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:00:54,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:00:54,214 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:00:54,215 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:00:54,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:00:54,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:00:54,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:00:54,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:00:54,216 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 -> f4443c7da5298ac603586799640102b5bfbd455269f211f15877108d6d955b4a [2025-04-29 11:00:54,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:00:54,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:00:54,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:00:54,444 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:00:54,444 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:00:54,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.c [2025-04-29 11:00:55,677 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26af3e1df/30e5dfb44e00400495ff54ec40e188e1/FLAGf72d9d9dd [2025-04-29 11:00:55,867 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:00:55,867 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.c [2025-04-29 11:00:55,868 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:00:55,868 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:00:55,872 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26af3e1df/30e5dfb44e00400495ff54ec40e188e1/FLAGf72d9d9dd [2025-04-29 11:00:56,728 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26af3e1df/30e5dfb44e00400495ff54ec40e188e1 [2025-04-29 11:00:56,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:00:56,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:00:56,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:00:56,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:00:56,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:00:56,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da06c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56, skipping insertion in model container [2025-04-29 11:00:56,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:00:56,884 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:00:56,892 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:00:56,920 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:00:56,932 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:00:56,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56 WrapperNode [2025-04-29 11:00:56,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:00:56,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:00:56,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:00:56,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:00:56,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,961 INFO L138 Inliner]: procedures = 12, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2025-04-29 11:00:56,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:00:56,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:00:56,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:00:56,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:00:56,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,978 INFO L175 MemorySlicer]: Split 24 memory accesses to 1 slices as follows [24]. 100 percent of accesses are in the largest equivalence class. The 20 initializations are split as follows [20]. The 2 writes are split as follows [2]. [2025-04-29 11:00:56,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,982 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:00:56,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:00:56,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:00:56,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:00:56,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (1/1) ... [2025-04-29 11:00:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:00:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:00:57,030 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) [2025-04-29 11:00:57,032 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 [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:00:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:00:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:00:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:00:57,051 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:00:57,119 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:00:57,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:00:57,305 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:00:57,305 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:00:57,451 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:00:57,451 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:00:57,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:00:57 BoogieIcfgContainer [2025-04-29 11:00:57,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:00:57,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:00:57,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:00:57,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:00:57,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:00:56" (1/3) ... [2025-04-29 11:00:57,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e3a514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:00:57, skipping insertion in model container [2025-04-29 11:00:57,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:00:56" (2/3) ... [2025-04-29 11:00:57,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e3a514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:00:57, skipping insertion in model container [2025-04-29 11:00:57,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:00:57" (3/3) ... [2025-04-29 11:00:57,459 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.c [2025-04-29 11:00:57,471 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:00:57,472 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_02-funloop_norace.c that has 2 procedures, 37 locations, 38 edges, 1 initial locations, 3 loop locations, and 10 error locations. [2025-04-29 11:00:57,473 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:00:57,509 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:00:57,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2025-04-29 11:00:57,569 INFO L116 PetriNetUnfolderBase]: 3/38 cut-off events. [2025-04-29 11:00:57,571 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:00:57,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-04-29 11:00:57,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2025-04-29 11:00:57,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2025-04-29 11:00:57,586 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:00:57,596 INFO L340 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;@22e664c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:00:57,598 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-04-29 11:00:57,602 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:00:57,603 INFO L116 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-04-29 11:00:57,603 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:00:57,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:57,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-04-29 11:00:57,605 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:00:57,608 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:00:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 272189, now seen corresponding path program 1 times [2025-04-29 11:00:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:00:57,616 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036177091] [2025-04-29 11:00:57,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:57,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:00:57,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:00:57,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:00:57,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:57,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:00:57,786 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036177091] [2025-04-29 11:00:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036177091] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:00:57,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:00:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:00:57,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873531748] [2025-04-29 11:00:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:00:57,792 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:00:57,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:00:57,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:00:57,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:00:57,839 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:00:57,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-04-29 11:00:57,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:00:57,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:00:57,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:00:57,983 INFO L116 PetriNetUnfolderBase]: 83/260 cut-off events. [2025-04-29 11:00:57,984 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:00:57,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1144 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2025-04-29 11:00:57,989 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2025-04-29 11:00:57,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2025-04-29 11:00:57,990 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:00:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:00:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-04-29 11:00:58,000 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-04-29 11:00:58,001 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2025-04-29 11:00:58,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2025-04-29 11:00:58,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:00:58,007 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2025-04-29 11:00:58,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2025-04-29 11:00:58,013 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2025-04-29 11:00:58,013 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2025-04-29 11:00:58,013 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-04-29 11:00:58,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:58,014 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-29 11:00:58,014 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:00:58,014 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:00:58,015 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:00:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash -480894319, now seen corresponding path program 1 times [2025-04-29 11:00:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:00:58,015 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634283851] [2025-04-29 11:00:58,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:00:58,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-29 11:00:58,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-29 11:00:58,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:58,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:58,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:00:58,105 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634283851] [2025-04-29 11:00:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634283851] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:00:58,106 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530215678] [2025-04-29 11:00:58,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:58,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:00:58,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:00:58,108 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) [2025-04-29 11:00:58,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:00:58,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-29 11:00:58,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-29 11:00:58,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:58,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:58,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-29 11:00:58,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:00:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:58,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:00:58,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530215678] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:00:58,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-29 11:00:58,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-04-29 11:00:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23001210] [2025-04-29 11:00:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:00:58,212 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:00:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:00:58,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:00:58,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:00:58,219 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:00:58,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-04-29 11:00:58,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:00:58,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:00:58,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:00:58,342 INFO L116 PetriNetUnfolderBase]: 83/259 cut-off events. [2025-04-29 11:00:58,342 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-29 11:00:58,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2025-04-29 11:00:58,344 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2025-04-29 11:00:58,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2025-04-29 11:00:58,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:00:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:00:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-04-29 11:00:58,345 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2025-04-29 11:00:58,345 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2025-04-29 11:00:58,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2025-04-29 11:00:58,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:00:58,347 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2025-04-29 11:00:58,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2025-04-29 11:00:58,347 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2025-04-29 11:00:58,347 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2025-04-29 11:00:58,347 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-04-29 11:00:58,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:58,347 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-04-29 11:00:58,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-29 11:00:58,552 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:00:58,552 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:00:58,552 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:00:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2022821742, now seen corresponding path program 1 times [2025-04-29 11:00:58,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:00:58,553 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823476114] [2025-04-29 11:00:58,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:58,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:00:58,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:00:58,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:00:58,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:58,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-29 11:00:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:00:58,609 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823476114] [2025-04-29 11:00:58,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823476114] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:00:58,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:00:58,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:00:58,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097763304] [2025-04-29 11:00:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:00:58,610 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:00:58,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:00:58,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:00:58,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:00:58,615 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:00:58,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-04-29 11:00:58,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:00:58,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:00:58,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:00:58,695 INFO L116 PetriNetUnfolderBase]: 83/258 cut-off events. [2025-04-29 11:00:58,696 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-29 11:00:58,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1138 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2025-04-29 11:00:58,697 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2025-04-29 11:00:58,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2025-04-29 11:00:58,698 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:00:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:00:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-04-29 11:00:58,698 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2025-04-29 11:00:58,698 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2025-04-29 11:00:58,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2025-04-29 11:00:58,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-04-29 11:00:58,699 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2025-04-29 11:00:58,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2025-04-29 11:00:58,700 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2025-04-29 11:00:58,700 INFO L485 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2025-04-29 11:00:58,700 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-04-29 11:00:58,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:58,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:00:58,700 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:00:58,700 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:00:58,701 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:00:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1214530596, now seen corresponding path program 1 times [2025-04-29 11:00:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:00:58,701 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784442075] [2025-04-29 11:00:58,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:00:58,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:00:58,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:00:58,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:58,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:00:58,797 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784442075] [2025-04-29 11:00:58,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784442075] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:00:58,797 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706820511] [2025-04-29 11:00:58,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:58,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:00:58,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:00:58,799 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) [2025-04-29 11:00:58,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-29 11:00:58,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:00:58,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:00:58,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:58,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:58,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-29 11:00:58,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:00:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:58,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:00:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:58,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706820511] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:00:58,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:00:58,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-04-29 11:00:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226478774] [2025-04-29 11:00:58,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:00:58,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:00:58,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:00:58,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:00:58,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:00:58,889 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:00:58,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2025-04-29 11:00:58,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:00:58,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:00:58,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:00:58,962 INFO L116 PetriNetUnfolderBase]: 83/262 cut-off events. [2025-04-29 11:00:58,962 INFO L117 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-04-29 11:00:58,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1135 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2025-04-29 11:00:58,964 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2025-04-29 11:00:58,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2025-04-29 11:00:58,964 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:00:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:00:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2025-04-29 11:00:58,968 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2025-04-29 11:00:58,969 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2025-04-29 11:00:58,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2025-04-29 11:00:58,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:00:58,970 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2025-04-29 11:00:58,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2025-04-29 11:00:58,970 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2025-04-29 11:00:58,970 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2025-04-29 11:00:58,970 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2025-04-29 11:00:58,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:58,970 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:00:58,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-29 11:00:59,175 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-04-29 11:00:59,175 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:00:59,176 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:00:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1300042660, now seen corresponding path program 2 times [2025-04-29 11:00:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:00:59,176 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119306108] [2025-04-29 11:00:59,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:00:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:00:59,186 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-29 11:00:59,194 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 17 statements. [2025-04-29 11:00:59,194 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:00:59,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-29 11:00:59,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:00:59,335 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119306108] [2025-04-29 11:00:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119306108] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:00:59,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:00:59,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:00:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710288145] [2025-04-29 11:00:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:00:59,335 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:00:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:00:59,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:00:59,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:00:59,338 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2025-04-29 11:00:59,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2025-04-29 11:00:59,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:00:59,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2025-04-29 11:00:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:00:59,525 INFO L116 PetriNetUnfolderBase]: 159/393 cut-off events. [2025-04-29 11:00:59,526 INFO L117 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-04-29 11:00:59,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 393 events. 159/393 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1680 event pairs, 16 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 702. Up to 189 conditions per place. [2025-04-29 11:00:59,527 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 61 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2025-04-29 11:00:59,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 342 flow [2025-04-29 11:00:59,529 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:00:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:00:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2025-04-29 11:00:59,530 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2025-04-29 11:00:59,530 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 7 states and 161 transitions. [2025-04-29 11:00:59,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 342 flow [2025-04-29 11:00:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:00:59,531 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 194 flow [2025-04-29 11:00:59,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2025-04-29 11:00:59,532 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2025-04-29 11:00:59,532 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 194 flow [2025-04-29 11:00:59,532 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2025-04-29 11:00:59,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:59,532 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:00:59,532 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:00:59,532 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:00:59,533 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:00:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1319003909, now seen corresponding path program 1 times [2025-04-29 11:00:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:00:59,534 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621726081] [2025-04-29 11:00:59,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:00:59,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-29 11:00:59,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-29 11:00:59,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:59,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:59,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:00:59,629 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621726081] [2025-04-29 11:00:59,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621726081] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:00:59,629 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712713968] [2025-04-29 11:00:59,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:00:59,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:00:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:00:59,632 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) [2025-04-29 11:00:59,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-29 11:00:59,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-29 11:00:59,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-29 11:00:59,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:00:59,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:00:59,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-29 11:00:59,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:00:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:59,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:00:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:00:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712713968] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:00:59,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:00:59,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-04-29 11:00:59,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169431816] [2025-04-29 11:00:59,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:00:59,796 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-29 11:00:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:00:59,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-29 11:00:59,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-04-29 11:00:59,815 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:00:59,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 194 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 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) [2025-04-29 11:00:59,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:00:59,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:00:59,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:00:59,972 INFO L116 PetriNetUnfolderBase]: 121/380 cut-off events. [2025-04-29 11:00:59,972 INFO L117 PetriNetUnfolderBase]: For 153/161 co-relation queries the response was YES. [2025-04-29 11:00:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 380 events. 121/380 cut-off events. For 153/161 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1797 event pairs, 68 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 779. Up to 241 conditions per place. [2025-04-29 11:00:59,975 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 30 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2025-04-29 11:00:59,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 332 flow [2025-04-29 11:00:59,975 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-29 11:00:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-29 11:00:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2025-04-29 11:00:59,977 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2025-04-29 11:00:59,977 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 194 flow. Second operand 15 states and 250 transitions. [2025-04-29 11:00:59,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 332 flow [2025-04-29 11:00:59,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-29 11:00:59,981 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 291 flow [2025-04-29 11:00:59,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=291, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2025-04-29 11:00:59,981 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2025-04-29 11:00:59,981 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 291 flow [2025-04-29 11:00:59,982 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 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) [2025-04-29 11:00:59,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:00:59,983 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:00:59,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-29 11:01:00,183 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:00,183 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:00,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 328934917, now seen corresponding path program 2 times [2025-04-29 11:01:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:00,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304054645] [2025-04-29 11:01:00,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:00,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-29 11:01:00,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 29 statements. [2025-04-29 11:01:00,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:00,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-04-29 11:01:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:00,303 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304054645] [2025-04-29 11:01:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304054645] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:00,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:01:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325829688] [2025-04-29 11:01:00,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:00,305 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:01:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:00,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:01:00,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:01:00,312 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:00,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:00,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:00,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:00,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:00,460 INFO L116 PetriNetUnfolderBase]: 145/409 cut-off events. [2025-04-29 11:01:00,460 INFO L117 PetriNetUnfolderBase]: For 223/237 co-relation queries the response was YES. [2025-04-29 11:01:00,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 409 events. 145/409 cut-off events. For 223/237 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1894 event pairs, 36 based on Foata normal form. 26/394 useless extension candidates. Maximal degree in co-relation 885. Up to 236 conditions per place. [2025-04-29 11:01:00,463 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 63 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2025-04-29 11:01:00,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 89 transitions, 567 flow [2025-04-29 11:01:00,463 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2025-04-29 11:01:00,464 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2025-04-29 11:01:00,464 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 291 flow. Second operand 7 states and 162 transitions. [2025-04-29 11:01:00,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 89 transitions, 567 flow [2025-04-29 11:01:00,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 557 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:00,467 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 379 flow [2025-04-29 11:01:00,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2025-04-29 11:01:00,468 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2025-04-29 11:01:00,468 INFO L485 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 379 flow [2025-04-29 11:01:00,468 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:00,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:00,468 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:00,468 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-29 11:01:00,468 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:00,468 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1019249369, now seen corresponding path program 1 times [2025-04-29 11:01:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:00,469 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114877760] [2025-04-29 11:01:00,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:00,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:00,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-29 11:01:00,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-29 11:01:00,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:00,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:00,711 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114877760] [2025-04-29 11:01:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114877760] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:01:00,711 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126851668] [2025-04-29 11:01:00,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:01:00,713 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) [2025-04-29 11:01:00,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-29 11:01:00,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-29 11:01:00,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-29 11:01:00,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:00,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:00,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-29 11:01:00,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:01:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:00,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:01:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:00,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126851668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:01:00,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:01:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-04-29 11:01:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950772554] [2025-04-29 11:01:00,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:01:00,970 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-29 11:01:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:00,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-29 11:01:00,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-04-29 11:01:00,992 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:00,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 379 flow. Second operand has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 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) [2025-04-29 11:01:00,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:00,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:00,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:01,172 INFO L116 PetriNetUnfolderBase]: 125/393 cut-off events. [2025-04-29 11:01:01,172 INFO L117 PetriNetUnfolderBase]: For 363/375 co-relation queries the response was YES. [2025-04-29 11:01:01,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 393 events. 125/393 cut-off events. For 363/375 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1815 event pairs, 52 based on Foata normal form. 3/361 useless extension candidates. Maximal degree in co-relation 956. Up to 248 conditions per place. [2025-04-29 11:01:01,175 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 38 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2025-04-29 11:01:01,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 73 transitions, 551 flow [2025-04-29 11:01:01,175 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-29 11:01:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-29 11:01:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2025-04-29 11:01:01,176 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2025-04-29 11:01:01,176 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 379 flow. Second operand 21 states and 339 transitions. [2025-04-29 11:01:01,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 73 transitions, 551 flow [2025-04-29 11:01:01,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 73 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:01,179 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 480 flow [2025-04-29 11:01:01,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=480, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2025-04-29 11:01:01,180 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2025-04-29 11:01:01,180 INFO L485 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 480 flow [2025-04-29 11:01:01,180 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 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) [2025-04-29 11:01:01,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:01,180 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:01,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-29 11:01:01,381 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:01,381 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:01,382 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:01,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1670364539, now seen corresponding path program 2 times [2025-04-29 11:01:01,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:01,382 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089498038] [2025-04-29 11:01:01,382 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:01,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:01,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-04-29 11:01:01,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 39 statements. [2025-04-29 11:01:01,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:01,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:01,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:01,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089498038] [2025-04-29 11:01:01,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089498038] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:01,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:01:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119519451] [2025-04-29 11:01:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:01,477 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:01:01,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:01,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:01:01,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:01:01,488 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:01,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:01,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:01,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:01,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:01,622 INFO L116 PetriNetUnfolderBase]: 145/412 cut-off events. [2025-04-29 11:01:01,623 INFO L117 PetriNetUnfolderBase]: For 417/433 co-relation queries the response was YES. [2025-04-29 11:01:01,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 412 events. 145/412 cut-off events. For 417/433 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1880 event pairs, 34 based on Foata normal form. 15/387 useless extension candidates. Maximal degree in co-relation 1017. Up to 236 conditions per place. [2025-04-29 11:01:01,625 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 71 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2025-04-29 11:01:01,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 96 transitions, 744 flow [2025-04-29 11:01:01,626 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2025-04-29 11:01:01,626 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2025-04-29 11:01:01,626 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 480 flow. Second operand 7 states and 159 transitions. [2025-04-29 11:01:01,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 96 transitions, 744 flow [2025-04-29 11:01:01,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 701 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-04-29 11:01:01,630 INFO L231 Difference]: Finished difference. Result has 99 places, 74 transitions, 483 flow [2025-04-29 11:01:01,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2025-04-29 11:01:01,630 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2025-04-29 11:01:01,631 INFO L485 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 483 flow [2025-04-29 11:01:01,631 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:01,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:01,631 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:01,631 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-29 11:01:01,631 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:01,631 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -338614737, now seen corresponding path program 1 times [2025-04-29 11:01:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:01,632 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661941141] [2025-04-29 11:01:01,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:01,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:01,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-29 11:01:01,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 11:01:01,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:01,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:01,674 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661941141] [2025-04-29 11:01:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661941141] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:01,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:01,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:01:01,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718308579] [2025-04-29 11:01:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:01,674 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:01:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:01,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:01:01,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:01:01,678 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:01,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 483 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-04-29 11:01:01,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:01,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:01,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:01,806 INFO L116 PetriNetUnfolderBase]: 208/562 cut-off events. [2025-04-29 11:01:01,806 INFO L117 PetriNetUnfolderBase]: For 586/620 co-relation queries the response was YES. [2025-04-29 11:01:01,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 562 events. 208/562 cut-off events. For 586/620 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2588 event pairs, 49 based on Foata normal form. 12/529 useless extension candidates. Maximal degree in co-relation 1495. Up to 250 conditions per place. [2025-04-29 11:01:01,809 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 89 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2025-04-29 11:01:01,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 789 flow [2025-04-29 11:01:01,810 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:01:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:01:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-04-29 11:01:01,810 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2025-04-29 11:01:01,811 INFO L175 Difference]: Start difference. First operand has 99 places, 74 transitions, 483 flow. Second operand 4 states and 109 transitions. [2025-04-29 11:01:01,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 789 flow [2025-04-29 11:01:01,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 765 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-04-29 11:01:01,815 INFO L231 Difference]: Finished difference. Result has 99 places, 76 transitions, 486 flow [2025-04-29 11:01:01,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=99, PETRI_TRANSITIONS=76} [2025-04-29 11:01:01,819 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2025-04-29 11:01:01,819 INFO L485 AbstractCegarLoop]: Abstraction has has 99 places, 76 transitions, 486 flow [2025-04-29 11:01:01,819 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-04-29 11:01:01,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:01,819 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:01,819 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-29 11:01:01,819 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:01,819 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:01,819 INFO L85 PathProgramCache]: Analyzing trace with hash 192473308, now seen corresponding path program 1 times [2025-04-29 11:01:01,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:01,820 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769937788] [2025-04-29 11:01:01,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:01,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:01,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-29 11:01:01,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 11:01:01,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:01,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:01,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:01,879 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769937788] [2025-04-29 11:01:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769937788] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:01:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109164216] [2025-04-29 11:01:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:01,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:01:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:01,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:01:01,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:01:01,887 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:01,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 76 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-04-29 11:01:01,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:01,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:01,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:02,033 INFO L116 PetriNetUnfolderBase]: 318/861 cut-off events. [2025-04-29 11:01:02,033 INFO L117 PetriNetUnfolderBase]: For 980/1026 co-relation queries the response was YES. [2025-04-29 11:01:02,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 861 events. 318/861 cut-off events. For 980/1026 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4375 event pairs, 142 based on Foata normal form. 19/845 useless extension candidates. Maximal degree in co-relation 2323. Up to 400 conditions per place. [2025-04-29 11:01:02,038 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 95 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2025-04-29 11:01:02,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 111 transitions, 854 flow [2025-04-29 11:01:02,038 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:01:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:01:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-04-29 11:01:02,039 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2025-04-29 11:01:02,039 INFO L175 Difference]: Start difference. First operand has 99 places, 76 transitions, 486 flow. Second operand 4 states and 109 transitions. [2025-04-29 11:01:02,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 111 transitions, 854 flow [2025-04-29 11:01:02,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:02,044 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 510 flow [2025-04-29 11:01:02,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2025-04-29 11:01:02,045 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2025-04-29 11:01:02,045 INFO L485 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 510 flow [2025-04-29 11:01:02,045 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-04-29 11:01:02,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:02,045 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:02,045 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-29 11:01:02,045 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:02,046 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -678021795, now seen corresponding path program 1 times [2025-04-29 11:01:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:02,046 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010087549] [2025-04-29 11:01:02,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:02,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-29 11:01:02,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:02,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:02,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:02,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:02,524 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010087549] [2025-04-29 11:01:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010087549] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:02,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:02,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:02,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305194637] [2025-04-29 11:01:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:02,525 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:02,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:02,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:02,539 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:02,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2025-04-29 11:01:02,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:02,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:02,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:02,947 INFO L116 PetriNetUnfolderBase]: 393/1048 cut-off events. [2025-04-29 11:01:02,947 INFO L117 PetriNetUnfolderBase]: For 1488/1512 co-relation queries the response was YES. [2025-04-29 11:01:02,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 1048 events. 393/1048 cut-off events. For 1488/1512 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5748 event pairs, 175 based on Foata normal form. 36/1080 useless extension candidates. Maximal degree in co-relation 3109. Up to 674 conditions per place. [2025-04-29 11:01:02,954 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 88 selfloop transitions, 40 changer transitions 0/140 dead transitions. [2025-04-29 11:01:02,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 140 transitions, 1101 flow [2025-04-29 11:01:02,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-29 11:01:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-29 11:01:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 304 transitions. [2025-04-29 11:01:02,955 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2025-04-29 11:01:02,955 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 510 flow. Second operand 15 states and 304 transitions. [2025-04-29 11:01:02,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 140 transitions, 1101 flow [2025-04-29 11:01:02,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 140 transitions, 1096 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:02,961 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 861 flow [2025-04-29 11:01:02,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=861, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2025-04-29 11:01:02,962 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2025-04-29 11:01:02,962 INFO L485 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 861 flow [2025-04-29 11:01:02,962 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2025-04-29 11:01:02,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:02,962 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:02,962 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-29 11:01:02,962 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:02,963 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash 132118972, now seen corresponding path program 1 times [2025-04-29 11:01:02,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:02,963 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74086098] [2025-04-29 11:01:02,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:02,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:02,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-29 11:01:02,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:02,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:02,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:03,208 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74086098] [2025-04-29 11:01:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74086098] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:03,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:03,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428165829] [2025-04-29 11:01:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:03,209 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:03,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:03,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:01:03,210 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:03,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 861 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:03,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:03,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:03,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:03,479 INFO L116 PetriNetUnfolderBase]: 444/1233 cut-off events. [2025-04-29 11:01:03,479 INFO L117 PetriNetUnfolderBase]: For 3155/3207 co-relation queries the response was YES. [2025-04-29 11:01:03,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 1233 events. 444/1233 cut-off events. For 3155/3207 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7295 event pairs, 136 based on Foata normal form. 13/1243 useless extension candidates. Maximal degree in co-relation 4423. Up to 367 conditions per place. [2025-04-29 11:01:03,487 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 167 selfloop transitions, 20 changer transitions 0/201 dead transitions. [2025-04-29 11:01:03,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 201 transitions, 1894 flow [2025-04-29 11:01:03,488 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:01:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-29 11:01:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2025-04-29 11:01:03,489 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2025-04-29 11:01:03,489 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 861 flow. Second operand 8 states and 207 transitions. [2025-04-29 11:01:03,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 201 transitions, 1894 flow [2025-04-29 11:01:03,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 201 transitions, 1852 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:03,524 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1020 flow [2025-04-29 11:01:03,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1020, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2025-04-29 11:01:03,525 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 97 predicate places. [2025-04-29 11:01:03,525 INFO L485 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1020 flow [2025-04-29 11:01:03,525 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:03,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:03,526 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:03,526 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-29 11:01:03,526 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:03,528 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1989495446, now seen corresponding path program 2 times [2025-04-29 11:01:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:03,529 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509540425] [2025-04-29 11:01:03,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:03,536 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-04-29 11:01:03,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-04-29 11:01:03,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:03,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:03,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509540425] [2025-04-29 11:01:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509540425] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:03,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246263795] [2025-04-29 11:01:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:03,681 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:03,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:03,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:01:03,682 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:03,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1020 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:03,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:03,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:03,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:03,994 INFO L116 PetriNetUnfolderBase]: 487/1321 cut-off events. [2025-04-29 11:01:03,994 INFO L117 PetriNetUnfolderBase]: For 4356/4425 co-relation queries the response was YES. [2025-04-29 11:01:04,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 1321 events. 487/1321 cut-off events. For 4356/4425 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7955 event pairs, 139 based on Foata normal form. 17/1328 useless extension candidates. Maximal degree in co-relation 5314. Up to 422 conditions per place. [2025-04-29 11:01:04,004 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 166 selfloop transitions, 36 changer transitions 0/216 dead transitions. [2025-04-29 11:01:04,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 216 transitions, 2127 flow [2025-04-29 11:01:04,005 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:01:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-29 11:01:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2025-04-29 11:01:04,006 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6506410256410257 [2025-04-29 11:01:04,006 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1020 flow. Second operand 8 states and 203 transitions. [2025-04-29 11:01:04,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 216 transitions, 2127 flow [2025-04-29 11:01:04,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 216 transitions, 2116 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:04,018 INFO L231 Difference]: Finished difference. Result has 147 places, 140 transitions, 1302 flow [2025-04-29 11:01:04,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1302, PETRI_PLACES=147, PETRI_TRANSITIONS=140} [2025-04-29 11:01:04,019 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2025-04-29 11:01:04,019 INFO L485 AbstractCegarLoop]: Abstraction has has 147 places, 140 transitions, 1302 flow [2025-04-29 11:01:04,019 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:04,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:04,020 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:04,020 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-29 11:01:04,020 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:04,021 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1903307437, now seen corresponding path program 2 times [2025-04-29 11:01:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:04,021 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170331214] [2025-04-29 11:01:04,021 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:04,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-04-29 11:01:04,036 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-04-29 11:01:04,036 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:04,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:04,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:04,247 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170331214] [2025-04-29 11:01:04,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170331214] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:04,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:04,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:04,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002134001] [2025-04-29 11:01:04,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:04,248 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:04,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:04,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:04,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:04,261 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:04,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 140 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2025-04-29 11:01:04,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:04,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:04,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:04,693 INFO L116 PetriNetUnfolderBase]: 615/1617 cut-off events. [2025-04-29 11:01:04,693 INFO L117 PetriNetUnfolderBase]: For 8306/8349 co-relation queries the response was YES. [2025-04-29 11:01:04,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7598 conditions, 1617 events. 615/1617 cut-off events. For 8306/8349 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10249 event pairs, 185 based on Foata normal form. 38/1650 useless extension candidates. Maximal degree in co-relation 7420. Up to 1004 conditions per place. [2025-04-29 11:01:04,730 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 142 selfloop transitions, 67 changer transitions 0/221 dead transitions. [2025-04-29 11:01:04,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 221 transitions, 2474 flow [2025-04-29 11:01:04,730 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-29 11:01:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-29 11:01:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2025-04-29 11:01:04,731 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2025-04-29 11:01:04,731 INFO L175 Difference]: Start difference. First operand has 147 places, 140 transitions, 1302 flow. Second operand 12 states and 256 transitions. [2025-04-29 11:01:04,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 221 transitions, 2474 flow [2025-04-29 11:01:04,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 221 transitions, 2405 flow, removed 15 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:04,753 INFO L231 Difference]: Finished difference. Result has 162 places, 175 transitions, 1847 flow [2025-04-29 11:01:04,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1847, PETRI_PLACES=162, PETRI_TRANSITIONS=175} [2025-04-29 11:01:04,754 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 123 predicate places. [2025-04-29 11:01:04,754 INFO L485 AbstractCegarLoop]: Abstraction has has 162 places, 175 transitions, 1847 flow [2025-04-29 11:01:04,754 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2025-04-29 11:01:04,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:04,754 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:04,754 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-29 11:01:04,755 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:04,755 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -429280748, now seen corresponding path program 3 times [2025-04-29 11:01:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:04,756 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446983570] [2025-04-29 11:01:04,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-29 11:01:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:04,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:04,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-04-29 11:01:04,769 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-29 11:01:04,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:04,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:04,845 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446983570] [2025-04-29 11:01:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446983570] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:04,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873545191] [2025-04-29 11:01:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:04,847 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:01:04,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:04,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:01:04,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:01:04,847 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:04,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 175 transitions, 1847 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:04,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:04,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:04,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:05,272 INFO L116 PetriNetUnfolderBase]: 575/1567 cut-off events. [2025-04-29 11:01:05,273 INFO L117 PetriNetUnfolderBase]: For 10391/10456 co-relation queries the response was YES. [2025-04-29 11:01:05,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 1567 events. 575/1567 cut-off events. For 10391/10456 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9987 event pairs, 158 based on Foata normal form. 16/1576 useless extension candidates. Maximal degree in co-relation 7941. Up to 503 conditions per place. [2025-04-29 11:01:05,288 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 249 selfloop transitions, 34 changer transitions 0/297 dead transitions. [2025-04-29 11:01:05,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 297 transitions, 3762 flow [2025-04-29 11:01:05,289 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2025-04-29 11:01:05,290 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6996336996336996 [2025-04-29 11:01:05,290 INFO L175 Difference]: Start difference. First operand has 162 places, 175 transitions, 1847 flow. Second operand 7 states and 191 transitions. [2025-04-29 11:01:05,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 297 transitions, 3762 flow [2025-04-29 11:01:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 297 transitions, 3693 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:05,323 INFO L231 Difference]: Finished difference. Result has 171 places, 196 transitions, 2233 flow [2025-04-29 11:01:05,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2233, PETRI_PLACES=171, PETRI_TRANSITIONS=196} [2025-04-29 11:01:05,324 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2025-04-29 11:01:05,325 INFO L485 AbstractCegarLoop]: Abstraction has has 171 places, 196 transitions, 2233 flow [2025-04-29 11:01:05,325 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:05,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:05,325 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:05,325 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-29 11:01:05,325 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:05,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2074351059, now seen corresponding path program 3 times [2025-04-29 11:01:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:05,325 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615192678] [2025-04-29 11:01:05,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-29 11:01:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:05,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:05,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-04-29 11:01:05,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-29 11:01:05,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:05,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:05,431 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615192678] [2025-04-29 11:01:05,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615192678] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:05,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:05,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708092998] [2025-04-29 11:01:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:05,431 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:01:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:05,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:01:05,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:01:05,432 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:05,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 196 transitions, 2233 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:05,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:05,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:05,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:05,852 INFO L116 PetriNetUnfolderBase]: 569/1553 cut-off events. [2025-04-29 11:01:05,852 INFO L117 PetriNetUnfolderBase]: For 12822/12884 co-relation queries the response was YES. [2025-04-29 11:01:05,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 1553 events. 569/1553 cut-off events. For 12822/12884 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9855 event pairs, 137 based on Foata normal form. 18/1566 useless extension candidates. Maximal degree in co-relation 8388. Up to 560 conditions per place. [2025-04-29 11:01:05,866 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 228 selfloop transitions, 48 changer transitions 0/290 dead transitions. [2025-04-29 11:01:05,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 290 transitions, 3893 flow [2025-04-29 11:01:05,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2025-04-29 11:01:05,868 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.684981684981685 [2025-04-29 11:01:05,868 INFO L175 Difference]: Start difference. First operand has 171 places, 196 transitions, 2233 flow. Second operand 7 states and 187 transitions. [2025-04-29 11:01:05,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 290 transitions, 3893 flow [2025-04-29 11:01:05,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 290 transitions, 3865 flow, removed 14 selfloop flow, removed 0 redundant places. [2025-04-29 11:01:05,899 INFO L231 Difference]: Finished difference. Result has 182 places, 213 transitions, 2663 flow [2025-04-29 11:01:05,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2663, PETRI_PLACES=182, PETRI_TRANSITIONS=213} [2025-04-29 11:01:05,899 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2025-04-29 11:01:05,899 INFO L485 AbstractCegarLoop]: Abstraction has has 182 places, 213 transitions, 2663 flow [2025-04-29 11:01:05,900 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:05,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:05,900 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:05,900 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-29 11:01:05,900 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:05,900 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 799390490, now seen corresponding path program 4 times [2025-04-29 11:01:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:05,901 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215771357] [2025-04-29 11:01:05,901 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-29 11:01:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:05,907 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-29 11:01:05,915 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 44 statements. [2025-04-29 11:01:05,916 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-29 11:01:05,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:06,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:06,017 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215771357] [2025-04-29 11:01:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215771357] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:06,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003743896] [2025-04-29 11:01:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:06,017 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:06,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:06,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:01:06,019 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:06,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 213 transitions, 2663 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:06,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:06,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:06,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:06,482 INFO L116 PetriNetUnfolderBase]: 652/1761 cut-off events. [2025-04-29 11:01:06,483 INFO L117 PetriNetUnfolderBase]: For 18352/18435 co-relation queries the response was YES. [2025-04-29 11:01:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10468 conditions, 1761 events. 652/1761 cut-off events. For 18352/18435 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11560 event pairs, 82 based on Foata normal form. 28/1784 useless extension candidates. Maximal degree in co-relation 10272. Up to 409 conditions per place. [2025-04-29 11:01:06,500 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 308 selfloop transitions, 76 changer transitions 0/398 dead transitions. [2025-04-29 11:01:06,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 398 transitions, 5552 flow [2025-04-29 11:01:06,500 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-29 11:01:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-29 11:01:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2025-04-29 11:01:06,501 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2025-04-29 11:01:06,501 INFO L175 Difference]: Start difference. First operand has 182 places, 213 transitions, 2663 flow. Second operand 11 states and 299 transitions. [2025-04-29 11:01:06,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 398 transitions, 5552 flow [2025-04-29 11:01:06,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 398 transitions, 5431 flow, removed 40 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:06,545 INFO L231 Difference]: Finished difference. Result has 196 places, 238 transitions, 3203 flow [2025-04-29 11:01:06,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2570, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3203, PETRI_PLACES=196, PETRI_TRANSITIONS=238} [2025-04-29 11:01:06,547 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2025-04-29 11:01:06,547 INFO L485 AbstractCegarLoop]: Abstraction has has 196 places, 238 transitions, 3203 flow [2025-04-29 11:01:06,547 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:06,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:06,547 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:06,547 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-29 11:01:06,547 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:06,548 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash -607310447, now seen corresponding path program 4 times [2025-04-29 11:01:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:06,548 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32309170] [2025-04-29 11:01:06,548 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-29 11:01:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:06,556 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-29 11:01:06,561 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 44 statements. [2025-04-29 11:01:06,561 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-29 11:01:06,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:06,648 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32309170] [2025-04-29 11:01:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32309170] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:06,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:06,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626326781] [2025-04-29 11:01:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:06,649 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:01:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:06,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:01:06,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:01:06,649 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:06,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 238 transitions, 3203 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:06,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:06,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:06,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:07,008 INFO L116 PetriNetUnfolderBase]: 634/1744 cut-off events. [2025-04-29 11:01:07,009 INFO L117 PetriNetUnfolderBase]: For 21634/21710 co-relation queries the response was YES. [2025-04-29 11:01:07,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 1744 events. 634/1744 cut-off events. For 21634/21710 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11518 event pairs, 171 based on Foata normal form. 16/1753 useless extension candidates. Maximal degree in co-relation 10635. Up to 563 conditions per place. [2025-04-29 11:01:07,025 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 263 selfloop transitions, 57 changer transitions 0/334 dead transitions. [2025-04-29 11:01:07,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 334 transitions, 5069 flow [2025-04-29 11:01:07,026 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-04-29 11:01:07,026 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2025-04-29 11:01:07,026 INFO L175 Difference]: Start difference. First operand has 196 places, 238 transitions, 3203 flow. Second operand 7 states and 192 transitions. [2025-04-29 11:01:07,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 334 transitions, 5069 flow [2025-04-29 11:01:07,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 334 transitions, 4889 flow, removed 67 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:07,081 INFO L231 Difference]: Finished difference. Result has 204 places, 254 transitions, 3564 flow [2025-04-29 11:01:07,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3564, PETRI_PLACES=204, PETRI_TRANSITIONS=254} [2025-04-29 11:01:07,082 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 165 predicate places. [2025-04-29 11:01:07,082 INFO L485 AbstractCegarLoop]: Abstraction has has 204 places, 254 transitions, 3564 flow [2025-04-29 11:01:07,082 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:07,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:07,082 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:07,082 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-29 11:01:07,082 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:07,083 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:07,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1622723235, now seen corresponding path program 5 times [2025-04-29 11:01:07,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:07,083 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779210347] [2025-04-29 11:01:07,083 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:07,095 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:07,110 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:07,110 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:07,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-04-29 11:01:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:07,639 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779210347] [2025-04-29 11:01:07,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779210347] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:01:07,639 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878425153] [2025-04-29 11:01:07,639 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:07,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:07,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:01:07,641 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) [2025-04-29 11:01:07,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-29 11:01:07,684 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:07,725 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:07,726 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:07,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:07,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-29 11:01:07,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:01:07,805 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-04-29 11:01:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:07,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:01:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878425153] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:07,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-29 11:01:07,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2025-04-29 11:01:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371432540] [2025-04-29 11:01:07,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:07,866 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:07,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:07,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2025-04-29 11:01:07,866 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:07,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 254 transitions, 3564 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:07,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:07,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:07,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:08,287 INFO L116 PetriNetUnfolderBase]: 585/1612 cut-off events. [2025-04-29 11:01:08,287 INFO L117 PetriNetUnfolderBase]: For 21610/21680 co-relation queries the response was YES. [2025-04-29 11:01:08,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 1612 events. 585/1612 cut-off events. For 21610/21680 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10477 event pairs, 119 based on Foata normal form. 14/1619 useless extension candidates. Maximal degree in co-relation 10155. Up to 492 conditions per place. [2025-04-29 11:01:08,303 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 203 selfloop transitions, 83 changer transitions 0/300 dead transitions. [2025-04-29 11:01:08,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 300 transitions, 4636 flow [2025-04-29 11:01:08,303 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:01:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-29 11:01:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2025-04-29 11:01:08,304 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2025-04-29 11:01:08,304 INFO L175 Difference]: Start difference. First operand has 204 places, 254 transitions, 3564 flow. Second operand 8 states and 196 transitions. [2025-04-29 11:01:08,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 300 transitions, 4636 flow [2025-04-29 11:01:08,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 300 transitions, 4530 flow, removed 42 selfloop flow, removed 5 redundant places. [2025-04-29 11:01:08,361 INFO L231 Difference]: Finished difference. Result has 201 places, 234 transitions, 3431 flow [2025-04-29 11:01:08,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3431, PETRI_PLACES=201, PETRI_TRANSITIONS=234} [2025-04-29 11:01:08,361 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2025-04-29 11:01:08,362 INFO L485 AbstractCegarLoop]: Abstraction has has 201 places, 234 transitions, 3431 flow [2025-04-29 11:01:08,362 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:08,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:08,362 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:08,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-29 11:01:08,562 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:08,562 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:08,563 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1479093340, now seen corresponding path program 5 times [2025-04-29 11:01:08,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:08,563 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768143932] [2025-04-29 11:01:08,563 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:08,571 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:08,581 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:08,582 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:08,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-04-29 11:01:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:08,928 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768143932] [2025-04-29 11:01:08,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768143932] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:01:08,928 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243396137] [2025-04-29 11:01:08,928 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:08,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:01:08,930 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) [2025-04-29 11:01:08,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-29 11:01:08,978 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:09,025 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:09,025 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:09,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:09,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-29 11:01:09,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:01:09,114 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-04-29 11:01:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:09,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:01:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243396137] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:09,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-29 11:01:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2025-04-29 11:01:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75250877] [2025-04-29 11:01:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:09,153 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:09,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:09,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2025-04-29 11:01:09,154 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:09,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 234 transitions, 3431 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:09,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:09,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:09,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:09,548 INFO L116 PetriNetUnfolderBase]: 560/1562 cut-off events. [2025-04-29 11:01:09,548 INFO L117 PetriNetUnfolderBase]: For 20646/20718 co-relation queries the response was YES. [2025-04-29 11:01:09,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9875 conditions, 1562 events. 560/1562 cut-off events. For 20646/20718 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10073 event pairs, 170 based on Foata normal form. 13/1569 useless extension candidates. Maximal degree in co-relation 9668. Up to 495 conditions per place. [2025-04-29 11:01:09,567 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 215 selfloop transitions, 61 changer transitions 0/290 dead transitions. [2025-04-29 11:01:09,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 290 transitions, 4596 flow [2025-04-29 11:01:09,568 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:01:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-29 11:01:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2025-04-29 11:01:09,568 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2025-04-29 11:01:09,568 INFO L175 Difference]: Start difference. First operand has 201 places, 234 transitions, 3431 flow. Second operand 8 states and 201 transitions. [2025-04-29 11:01:09,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 290 transitions, 4596 flow [2025-04-29 11:01:09,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 290 transitions, 4513 flow, removed 12 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:09,618 INFO L231 Difference]: Finished difference. Result has 208 places, 236 transitions, 3560 flow [2025-04-29 11:01:09,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3560, PETRI_PLACES=208, PETRI_TRANSITIONS=236} [2025-04-29 11:01:09,619 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 169 predicate places. [2025-04-29 11:01:09,619 INFO L485 AbstractCegarLoop]: Abstraction has has 208 places, 236 transitions, 3560 flow [2025-04-29 11:01:09,619 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:09,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:09,619 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:09,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-29 11:01:09,823 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:09,823 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:09,823 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1434388975, now seen corresponding path program 6 times [2025-04-29 11:01:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:09,824 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543675530] [2025-04-29 11:01:09,824 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-29 11:01:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:09,830 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:09,831 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-04-29 11:01:09,831 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-29 11:01:09,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:09,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:09,894 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543675530] [2025-04-29 11:01:09,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543675530] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:09,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:09,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957213763] [2025-04-29 11:01:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:09,895 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:01:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:09,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:01:09,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:01:09,895 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:09,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 236 transitions, 3560 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:09,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:09,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:09,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:10,238 INFO L116 PetriNetUnfolderBase]: 532/1491 cut-off events. [2025-04-29 11:01:10,238 INFO L117 PetriNetUnfolderBase]: For 21319/21379 co-relation queries the response was YES. [2025-04-29 11:01:10,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 1491 events. 532/1491 cut-off events. For 21319/21379 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9465 event pairs, 162 based on Foata normal form. 9/1489 useless extension candidates. Maximal degree in co-relation 9336. Up to 492 conditions per place. [2025-04-29 11:01:10,249 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 215 selfloop transitions, 58 changer transitions 0/287 dead transitions. [2025-04-29 11:01:10,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 287 transitions, 4678 flow [2025-04-29 11:01:10,250 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2025-04-29 11:01:10,250 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-29 11:01:10,250 INFO L175 Difference]: Start difference. First operand has 208 places, 236 transitions, 3560 flow. Second operand 7 states and 182 transitions. [2025-04-29 11:01:10,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 287 transitions, 4678 flow [2025-04-29 11:01:10,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 287 transitions, 4543 flow, removed 33 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:10,298 INFO L231 Difference]: Finished difference. Result has 212 places, 237 transitions, 3587 flow [2025-04-29 11:01:10,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3587, PETRI_PLACES=212, PETRI_TRANSITIONS=237} [2025-04-29 11:01:10,298 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2025-04-29 11:01:10,298 INFO L485 AbstractCegarLoop]: Abstraction has has 212 places, 237 transitions, 3587 flow [2025-04-29 11:01:10,298 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:10,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:10,298 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:10,298 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-04-29 11:01:10,299 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:10,299 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:10,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2022511079, now seen corresponding path program 7 times [2025-04-29 11:01:10,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:10,299 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446853593] [2025-04-29 11:01:10,299 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-29 11:01:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:10,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-29 11:01:10,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:10,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:10,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:10,533 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446853593] [2025-04-29 11:01:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446853593] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113865966] [2025-04-29 11:01:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:10,533 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:10,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:10,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:10,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:10,545 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-04-29 11:01:10,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 237 transitions, 3587 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2025-04-29 11:01:10,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:10,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-04-29 11:01:10,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:11,113 INFO L116 PetriNetUnfolderBase]: 653/1745 cut-off events. [2025-04-29 11:01:11,113 INFO L117 PetriNetUnfolderBase]: For 25493/25542 co-relation queries the response was YES. [2025-04-29 11:01:11,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11208 conditions, 1745 events. 653/1745 cut-off events. For 25493/25542 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11231 event pairs, 206 based on Foata normal form. 60/1803 useless extension candidates. Maximal degree in co-relation 10997. Up to 1099 conditions per place. [2025-04-29 11:01:11,131 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 225 selfloop transitions, 129 changer transitions 0/366 dead transitions. [2025-04-29 11:01:11,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 366 transitions, 5962 flow [2025-04-29 11:01:11,135 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-29 11:01:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-29 11:01:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 436 transitions. [2025-04-29 11:01:11,135 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5323565323565324 [2025-04-29 11:01:11,135 INFO L175 Difference]: Start difference. First operand has 212 places, 237 transitions, 3587 flow. Second operand 21 states and 436 transitions. [2025-04-29 11:01:11,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 366 transitions, 5962 flow [2025-04-29 11:01:11,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 366 transitions, 5760 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:11,192 INFO L231 Difference]: Finished difference. Result has 242 places, 315 transitions, 4990 flow [2025-04-29 11:01:11,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4990, PETRI_PLACES=242, PETRI_TRANSITIONS=315} [2025-04-29 11:01:11,193 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 203 predicate places. [2025-04-29 11:01:11,193 INFO L485 AbstractCegarLoop]: Abstraction has has 242 places, 315 transitions, 4990 flow [2025-04-29 11:01:11,193 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2025-04-29 11:01:11,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:11,193 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:11,194 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-04-29 11:01:11,194 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:11,194 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1921700540, now seen corresponding path program 6 times [2025-04-29 11:01:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:11,194 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652456865] [2025-04-29 11:01:11,194 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-29 11:01:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:11,202 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:11,203 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-04-29 11:01:11,204 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-29 11:01:11,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:11,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:11,281 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652456865] [2025-04-29 11:01:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652456865] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:11,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:11,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795180153] [2025-04-29 11:01:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:11,281 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:01:11,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:11,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:01:11,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:01:11,282 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:11,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 315 transitions, 4990 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:11,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:11,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:11,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:11,748 INFO L116 PetriNetUnfolderBase]: 612/1670 cut-off events. [2025-04-29 11:01:11,748 INFO L117 PetriNetUnfolderBase]: For 33509/33586 co-relation queries the response was YES. [2025-04-29 11:01:11,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12114 conditions, 1670 events. 612/1670 cut-off events. For 33509/33586 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10764 event pairs, 82 based on Foata normal form. 17/1683 useless extension candidates. Maximal degree in co-relation 11888. Up to 491 conditions per place. [2025-04-29 11:01:11,768 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 319 selfloop transitions, 70 changer transitions 0/403 dead transitions. [2025-04-29 11:01:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 403 transitions, 6977 flow [2025-04-29 11:01:11,768 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-04-29 11:01:11,769 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6813186813186813 [2025-04-29 11:01:11,769 INFO L175 Difference]: Start difference. First operand has 242 places, 315 transitions, 4990 flow. Second operand 7 states and 186 transitions. [2025-04-29 11:01:11,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 403 transitions, 6977 flow [2025-04-29 11:01:11,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 403 transitions, 6687 flow, removed 142 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:11,868 INFO L231 Difference]: Finished difference. Result has 251 places, 326 transitions, 5204 flow [2025-04-29 11:01:11,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4732, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5204, PETRI_PLACES=251, PETRI_TRANSITIONS=326} [2025-04-29 11:01:11,869 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 212 predicate places. [2025-04-29 11:01:11,869 INFO L485 AbstractCegarLoop]: Abstraction has has 251 places, 326 transitions, 5204 flow [2025-04-29 11:01:11,870 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:11,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:11,870 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:11,870 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-04-29 11:01:11,870 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:11,871 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1669183420, now seen corresponding path program 7 times [2025-04-29 11:01:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:11,871 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830185963] [2025-04-29 11:01:11,871 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-29 11:01:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:11,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-29 11:01:11,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-29 11:01:11,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:11,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:12,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:12,043 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830185963] [2025-04-29 11:01:12,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830185963] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:12,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:12,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112080113] [2025-04-29 11:01:12,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:12,043 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:12,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:12,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:01:12,044 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:12,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 326 transitions, 5204 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:12,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:12,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:12,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:12,452 INFO L116 PetriNetUnfolderBase]: 549/1537 cut-off events. [2025-04-29 11:01:12,452 INFO L117 PetriNetUnfolderBase]: For 34155/34221 co-relation queries the response was YES. [2025-04-29 11:01:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11437 conditions, 1537 events. 549/1537 cut-off events. For 34155/34221 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9821 event pairs, 104 based on Foata normal form. 14/1549 useless extension candidates. Maximal degree in co-relation 11207. Up to 469 conditions per place. [2025-04-29 11:01:12,469 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 286 selfloop transitions, 49 changer transitions 0/349 dead transitions. [2025-04-29 11:01:12,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 349 transitions, 6341 flow [2025-04-29 11:01:12,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:01:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-29 11:01:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2025-04-29 11:01:12,471 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2025-04-29 11:01:12,471 INFO L175 Difference]: Start difference. First operand has 251 places, 326 transitions, 5204 flow. Second operand 8 states and 210 transitions. [2025-04-29 11:01:12,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 349 transitions, 6341 flow [2025-04-29 11:01:12,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 349 transitions, 6032 flow, removed 67 selfloop flow, removed 12 redundant places. [2025-04-29 11:01:12,564 INFO L231 Difference]: Finished difference. Result has 243 places, 282 transitions, 4626 flow [2025-04-29 11:01:12,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4626, PETRI_PLACES=243, PETRI_TRANSITIONS=282} [2025-04-29 11:01:12,565 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 204 predicate places. [2025-04-29 11:01:12,565 INFO L485 AbstractCegarLoop]: Abstraction has has 243 places, 282 transitions, 4626 flow [2025-04-29 11:01:12,565 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:12,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:12,566 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:12,566 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-04-29 11:01:12,566 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:12,567 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1560179968, now seen corresponding path program 8 times [2025-04-29 11:01:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:12,567 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768914204] [2025-04-29 11:01:12,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:12,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:12,572 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-04-29 11:01:12,575 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-04-29 11:01:12,575 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:12,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:12,633 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768914204] [2025-04-29 11:01:12,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768914204] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:12,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:12,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-29 11:01:12,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245146509] [2025-04-29 11:01:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:12,634 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:01:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:12,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:01:12,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:01:12,634 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:12,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 282 transitions, 4626 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:12,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:12,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:12,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:13,004 INFO L116 PetriNetUnfolderBase]: 507/1432 cut-off events. [2025-04-29 11:01:13,004 INFO L117 PetriNetUnfolderBase]: For 25101/25161 co-relation queries the response was YES. [2025-04-29 11:01:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10003 conditions, 1432 events. 507/1432 cut-off events. For 25101/25161 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8941 event pairs, 95 based on Foata normal form. 14/1445 useless extension candidates. Maximal degree in co-relation 9775. Up to 470 conditions per place. [2025-04-29 11:01:13,019 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 260 selfloop transitions, 62 changer transitions 0/336 dead transitions. [2025-04-29 11:01:13,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 336 transitions, 6034 flow [2025-04-29 11:01:13,020 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:01:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-29 11:01:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2025-04-29 11:01:13,020 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2025-04-29 11:01:13,020 INFO L175 Difference]: Start difference. First operand has 243 places, 282 transitions, 4626 flow. Second operand 7 states and 189 transitions. [2025-04-29 11:01:13,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 336 transitions, 6034 flow [2025-04-29 11:01:13,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 336 transitions, 5925 flow, removed 34 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:13,099 INFO L231 Difference]: Finished difference. Result has 248 places, 285 transitions, 4831 flow [2025-04-29 11:01:13,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4831, PETRI_PLACES=248, PETRI_TRANSITIONS=285} [2025-04-29 11:01:13,099 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 209 predicate places. [2025-04-29 11:01:13,099 INFO L485 AbstractCegarLoop]: Abstraction has has 248 places, 285 transitions, 4831 flow [2025-04-29 11:01:13,100 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-04-29 11:01:13,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:13,100 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:13,100 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-04-29 11:01:13,100 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:13,100 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1978318252, now seen corresponding path program 9 times [2025-04-29 11:01:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:13,101 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002183238] [2025-04-29 11:01:13,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-29 11:01:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:13,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-04-29 11:01:13,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-04-29 11:01:13,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-29 11:01:13,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:13,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:13,179 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002183238] [2025-04-29 11:01:13,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002183238] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:13,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:13,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:13,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637152388] [2025-04-29 11:01:13,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:13,180 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:13,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:13,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:13,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:01:13,180 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:13,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 285 transitions, 4831 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:13,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:13,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:13,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:13,640 INFO L116 PetriNetUnfolderBase]: 543/1539 cut-off events. [2025-04-29 11:01:13,640 INFO L117 PetriNetUnfolderBase]: For 26925/26988 co-relation queries the response was YES. [2025-04-29 11:01:13,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10798 conditions, 1539 events. 543/1539 cut-off events. For 26925/26988 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9844 event pairs, 52 based on Foata normal form. 15/1554 useless extension candidates. Maximal degree in co-relation 10568. Up to 352 conditions per place. [2025-04-29 11:01:13,655 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 203 selfloop transitions, 154 changer transitions 0/371 dead transitions. [2025-04-29 11:01:13,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 371 transitions, 6695 flow [2025-04-29 11:01:13,655 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-29 11:01:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-29 11:01:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2025-04-29 11:01:13,656 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.634032634032634 [2025-04-29 11:01:13,656 INFO L175 Difference]: Start difference. First operand has 248 places, 285 transitions, 4831 flow. Second operand 11 states and 272 transitions. [2025-04-29 11:01:13,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 371 transitions, 6695 flow [2025-04-29 11:01:13,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 371 transitions, 6536 flow, removed 36 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:13,735 INFO L231 Difference]: Finished difference. Result has 259 places, 311 transitions, 5732 flow [2025-04-29 11:01:13,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4686, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5732, PETRI_PLACES=259, PETRI_TRANSITIONS=311} [2025-04-29 11:01:13,736 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 220 predicate places. [2025-04-29 11:01:13,736 INFO L485 AbstractCegarLoop]: Abstraction has has 259 places, 311 transitions, 5732 flow [2025-04-29 11:01:13,736 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:13,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:13,736 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:13,736 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-04-29 11:01:13,736 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:13,737 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -979129738, now seen corresponding path program 10 times [2025-04-29 11:01:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:13,737 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490570608] [2025-04-29 11:01:13,737 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-29 11:01:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:13,742 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-29 11:01:13,746 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 44 statements. [2025-04-29 11:01:13,746 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-29 11:01:13,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:13,823 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490570608] [2025-04-29 11:01:13,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490570608] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:13,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18592195] [2025-04-29 11:01:13,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:13,824 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-29 11:01:13,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:13,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-29 11:01:13,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:01:13,824 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-04-29 11:01:13,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 311 transitions, 5732 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:13,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:13,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-04-29 11:01:13,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:14,312 INFO L116 PetriNetUnfolderBase]: 482/1395 cut-off events. [2025-04-29 11:01:14,312 INFO L117 PetriNetUnfolderBase]: For 27654/27708 co-relation queries the response was YES. [2025-04-29 11:01:14,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 1395 events. 482/1395 cut-off events. For 27654/27708 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8692 event pairs, 93 based on Foata normal form. 17/1410 useless extension candidates. Maximal degree in co-relation 9975. Up to 332 conditions per place. [2025-04-29 11:01:14,324 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 194 selfloop transitions, 124 changer transitions 0/332 dead transitions. [2025-04-29 11:01:14,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 332 transitions, 6509 flow [2025-04-29 11:01:14,324 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-29 11:01:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-29 11:01:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2025-04-29 11:01:14,325 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.634032634032634 [2025-04-29 11:01:14,325 INFO L175 Difference]: Start difference. First operand has 259 places, 311 transitions, 5732 flow. Second operand 11 states and 272 transitions. [2025-04-29 11:01:14,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 332 transitions, 6509 flow [2025-04-29 11:01:14,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 332 transitions, 5874 flow, removed 206 selfloop flow, removed 21 redundant places. [2025-04-29 11:01:14,413 INFO L231 Difference]: Finished difference. Result has 244 places, 279 transitions, 5065 flow [2025-04-29 11:01:14,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5065, PETRI_PLACES=244, PETRI_TRANSITIONS=279} [2025-04-29 11:01:14,414 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 205 predicate places. [2025-04-29 11:01:14,414 INFO L485 AbstractCegarLoop]: Abstraction has has 244 places, 279 transitions, 5065 flow [2025-04-29 11:01:14,414 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-04-29 11:01:14,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:14,414 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:14,414 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-04-29 11:01:14,415 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:14,415 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1038191039, now seen corresponding path program 1 times [2025-04-29 11:01:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:14,415 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836093262] [2025-04-29 11:01:14,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:14,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:14,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-29 11:01:14,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:14,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:14,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:14,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:14,653 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836093262] [2025-04-29 11:01:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836093262] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:14,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:14,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705983053] [2025-04-29 11:01:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:14,653 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-29 11:01:14,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:14,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-29 11:01:14,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-29 11:01:14,669 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:14,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 279 transitions, 5065 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2025-04-29 11:01:14,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:14,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:14,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:15,290 INFO L116 PetriNetUnfolderBase]: 774/1888 cut-off events. [2025-04-29 11:01:15,290 INFO L117 PetriNetUnfolderBase]: For 31747/31757 co-relation queries the response was YES. [2025-04-29 11:01:15,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12763 conditions, 1888 events. 774/1888 cut-off events. For 31747/31757 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 11625 event pairs, 269 based on Foata normal form. 22/1910 useless extension candidates. Maximal degree in co-relation 12544. Up to 1143 conditions per place. [2025-04-29 11:01:15,307 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 308 selfloop transitions, 56 changer transitions 0/372 dead transitions. [2025-04-29 11:01:15,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 372 transitions, 7125 flow [2025-04-29 11:01:15,307 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-29 11:01:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-04-29 11:01:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 298 transitions. [2025-04-29 11:01:15,308 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4494720965309201 [2025-04-29 11:01:15,308 INFO L175 Difference]: Start difference. First operand has 244 places, 279 transitions, 5065 flow. Second operand 17 states and 298 transitions. [2025-04-29 11:01:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 372 transitions, 7125 flow [2025-04-29 11:01:15,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 372 transitions, 6842 flow, removed 47 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:15,383 INFO L231 Difference]: Finished difference. Result has 263 places, 310 transitions, 5394 flow [2025-04-29 11:01:15,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4836, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5394, PETRI_PLACES=263, PETRI_TRANSITIONS=310} [2025-04-29 11:01:15,384 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 224 predicate places. [2025-04-29 11:01:15,384 INFO L485 AbstractCegarLoop]: Abstraction has has 263 places, 310 transitions, 5394 flow [2025-04-29 11:01:15,384 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2025-04-29 11:01:15,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:15,384 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:15,384 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-04-29 11:01:15,384 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:15,385 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1197720467, now seen corresponding path program 2 times [2025-04-29 11:01:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:15,385 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179942428] [2025-04-29 11:01:15,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:15,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:15,391 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-29 11:01:15,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:15,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:15,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:15,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:15,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179942428] [2025-04-29 11:01:15,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179942428] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:15,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:15,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107071318] [2025-04-29 11:01:15,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:15,476 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:15,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:15,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:15,484 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2025-04-29 11:01:15,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 310 transitions, 5394 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:15,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:15,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2025-04-29 11:01:15,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:16,185 INFO L116 PetriNetUnfolderBase]: 972/2245 cut-off events. [2025-04-29 11:01:16,186 INFO L117 PetriNetUnfolderBase]: For 37516/37540 co-relation queries the response was YES. [2025-04-29 11:01:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15897 conditions, 2245 events. 972/2245 cut-off events. For 37516/37540 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13665 event pairs, 144 based on Foata normal form. 23/2266 useless extension candidates. Maximal degree in co-relation 15670. Up to 643 conditions per place. [2025-04-29 11:01:16,208 INFO L140 encePairwiseOnDemand]: 23/39 looper letters, 304 selfloop transitions, 193 changer transitions 0/504 dead transitions. [2025-04-29 11:01:16,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 504 transitions, 9035 flow [2025-04-29 11:01:16,212 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-29 11:01:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-29 11:01:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 368 transitions. [2025-04-29 11:01:16,212 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4966261808367072 [2025-04-29 11:01:16,212 INFO L175 Difference]: Start difference. First operand has 263 places, 310 transitions, 5394 flow. Second operand 19 states and 368 transitions. [2025-04-29 11:01:16,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 504 transitions, 9035 flow [2025-04-29 11:01:16,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 504 transitions, 8854 flow, removed 24 selfloop flow, removed 5 redundant places. [2025-04-29 11:01:16,313 INFO L231 Difference]: Finished difference. Result has 290 places, 399 transitions, 7411 flow [2025-04-29 11:01:16,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7411, PETRI_PLACES=290, PETRI_TRANSITIONS=399} [2025-04-29 11:01:16,313 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 251 predicate places. [2025-04-29 11:01:16,313 INFO L485 AbstractCegarLoop]: Abstraction has has 290 places, 399 transitions, 7411 flow [2025-04-29 11:01:16,314 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:16,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:16,314 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:16,314 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-04-29 11:01:16,314 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:16,314 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash 476983917, now seen corresponding path program 3 times [2025-04-29 11:01:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:16,314 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913402593] [2025-04-29 11:01:16,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-29 11:01:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:16,320 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:16,322 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:16,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-29 11:01:16,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:16,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:16,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913402593] [2025-04-29 11:01:16,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913402593] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:16,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:16,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712379331] [2025-04-29 11:01:16,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:16,414 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:16,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:16,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:16,437 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:16,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 399 transitions, 7411 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:16,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:16,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:16,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:17,475 INFO L116 PetriNetUnfolderBase]: 1077/2515 cut-off events. [2025-04-29 11:01:17,475 INFO L117 PetriNetUnfolderBase]: For 55384/55428 co-relation queries the response was YES. [2025-04-29 11:01:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19957 conditions, 2515 events. 1077/2515 cut-off events. For 55384/55428 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 16142 event pairs, 213 based on Foata normal form. 26/2525 useless extension candidates. Maximal degree in co-relation 19719. Up to 888 conditions per place. [2025-04-29 11:01:17,500 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 421 selfloop transitions, 151 changer transitions 0/593 dead transitions. [2025-04-29 11:01:17,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 593 transitions, 11460 flow [2025-04-29 11:01:17,501 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-29 11:01:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-29 11:01:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 454 transitions. [2025-04-29 11:01:17,502 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5291375291375291 [2025-04-29 11:01:17,502 INFO L175 Difference]: Start difference. First operand has 290 places, 399 transitions, 7411 flow. Second operand 22 states and 454 transitions. [2025-04-29 11:01:17,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 593 transitions, 11460 flow [2025-04-29 11:01:17,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 593 transitions, 11302 flow, removed 69 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:17,678 INFO L231 Difference]: Finished difference. Result has 322 places, 470 transitions, 8924 flow [2025-04-29 11:01:17,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7297, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8924, PETRI_PLACES=322, PETRI_TRANSITIONS=470} [2025-04-29 11:01:17,679 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 283 predicate places. [2025-04-29 11:01:17,679 INFO L485 AbstractCegarLoop]: Abstraction has has 322 places, 470 transitions, 8924 flow [2025-04-29 11:01:17,679 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:17,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:17,679 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:17,679 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-04-29 11:01:17,679 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:17,679 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 545555422, now seen corresponding path program 1 times [2025-04-29 11:01:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:17,679 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615832505] [2025-04-29 11:01:17,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:17,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-29 11:01:17,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:17,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:17,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:17,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615832505] [2025-04-29 11:01:17,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615832505] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:17,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:17,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730494163] [2025-04-29 11:01:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:17,907 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:17,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:17,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:17,935 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-04-29 11:01:17,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 470 transitions, 8924 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:17,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:17,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-04-29 11:01:17,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:18,841 INFO L116 PetriNetUnfolderBase]: 1126/2669 cut-off events. [2025-04-29 11:01:18,841 INFO L117 PetriNetUnfolderBase]: For 70866/70901 co-relation queries the response was YES. [2025-04-29 11:01:18,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22799 conditions, 2669 events. 1126/2669 cut-off events. For 70866/70901 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18090 event pairs, 267 based on Foata normal form. 31/2684 useless extension candidates. Maximal degree in co-relation 22548. Up to 1790 conditions per place. [2025-04-29 11:01:18,867 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 486 selfloop transitions, 82 changer transitions 0/592 dead transitions. [2025-04-29 11:01:18,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 592 transitions, 12173 flow [2025-04-29 11:01:18,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-29 11:01:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-29 11:01:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2025-04-29 11:01:18,868 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2025-04-29 11:01:18,868 INFO L175 Difference]: Start difference. First operand has 322 places, 470 transitions, 8924 flow. Second operand 15 states and 283 transitions. [2025-04-29 11:01:18,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 592 transitions, 12173 flow [2025-04-29 11:01:19,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 592 transitions, 11902 flow, removed 78 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:19,078 INFO L231 Difference]: Finished difference. Result has 341 places, 503 transitions, 9584 flow [2025-04-29 11:01:19,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8682, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9584, PETRI_PLACES=341, PETRI_TRANSITIONS=503} [2025-04-29 11:01:19,079 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 302 predicate places. [2025-04-29 11:01:19,079 INFO L485 AbstractCegarLoop]: Abstraction has has 341 places, 503 transitions, 9584 flow [2025-04-29 11:01:19,079 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:19,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:19,079 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:19,079 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-04-29 11:01:19,079 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:19,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1726244014, now seen corresponding path program 2 times [2025-04-29 11:01:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:19,080 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479934465] [2025-04-29 11:01:19,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:19,085 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-29 11:01:19,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:19,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:19,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:19,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:19,165 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479934465] [2025-04-29 11:01:19,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479934465] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:19,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:19,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:19,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601369022] [2025-04-29 11:01:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:19,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:19,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:19,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:19,177 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2025-04-29 11:01:19,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 503 transitions, 9584 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:19,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:19,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2025-04-29 11:01:19,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:20,290 INFO L116 PetriNetUnfolderBase]: 1423/3121 cut-off events. [2025-04-29 11:01:20,290 INFO L117 PetriNetUnfolderBase]: For 85717/85776 co-relation queries the response was YES. [2025-04-29 11:01:20,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27499 conditions, 3121 events. 1423/3121 cut-off events. For 85717/85776 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20337 event pairs, 215 based on Foata normal form. 23/3144 useless extension candidates. Maximal degree in co-relation 27239. Up to 898 conditions per place. [2025-04-29 11:01:20,332 INFO L140 encePairwiseOnDemand]: 23/39 looper letters, 513 selfloop transitions, 217 changer transitions 0/737 dead transitions. [2025-04-29 11:01:20,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 737 transitions, 14904 flow [2025-04-29 11:01:20,332 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-29 11:01:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-29 11:01:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 424 transitions. [2025-04-29 11:01:20,333 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5177045177045178 [2025-04-29 11:01:20,333 INFO L175 Difference]: Start difference. First operand has 341 places, 503 transitions, 9584 flow. Second operand 21 states and 424 transitions. [2025-04-29 11:01:20,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 737 transitions, 14904 flow [2025-04-29 11:01:20,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 737 transitions, 14815 flow, removed 33 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:20,642 INFO L231 Difference]: Finished difference. Result has 371 places, 570 transitions, 11404 flow [2025-04-29 11:01:20,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9525, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11404, PETRI_PLACES=371, PETRI_TRANSITIONS=570} [2025-04-29 11:01:20,643 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 332 predicate places. [2025-04-29 11:01:20,643 INFO L485 AbstractCegarLoop]: Abstraction has has 371 places, 570 transitions, 11404 flow [2025-04-29 11:01:20,643 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:20,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:20,643 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:20,644 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-04-29 11:01:20,644 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:20,644 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash 594610204, now seen corresponding path program 3 times [2025-04-29 11:01:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:20,644 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224584843] [2025-04-29 11:01:20,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-29 11:01:20,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:20,654 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:20,657 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:20,657 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-29 11:01:20,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:20,757 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224584843] [2025-04-29 11:01:20,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224584843] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:20,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:20,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:20,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343982879] [2025-04-29 11:01:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:20,757 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:20,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:20,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:20,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:20,778 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:20,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 570 transitions, 11404 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:20,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:20,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:20,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:21,885 INFO L116 PetriNetUnfolderBase]: 1424/3252 cut-off events. [2025-04-29 11:01:21,885 INFO L117 PetriNetUnfolderBase]: For 107722/107746 co-relation queries the response was YES. [2025-04-29 11:01:21,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30676 conditions, 3252 events. 1424/3252 cut-off events. For 107722/107746 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 22135 event pairs, 267 based on Foata normal form. 24/3276 useless extension candidates. Maximal degree in co-relation 30405. Up to 1099 conditions per place. [2025-04-29 11:01:21,926 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 591 selfloop transitions, 141 changer transitions 0/750 dead transitions. [2025-04-29 11:01:21,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 750 transitions, 16108 flow [2025-04-29 11:01:21,927 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-29 11:01:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-04-29 11:01:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 349 transitions. [2025-04-29 11:01:21,927 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.526395173453997 [2025-04-29 11:01:21,927 INFO L175 Difference]: Start difference. First operand has 371 places, 570 transitions, 11404 flow. Second operand 17 states and 349 transitions. [2025-04-29 11:01:21,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 750 transitions, 16108 flow [2025-04-29 11:01:22,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 750 transitions, 15782 flow, removed 163 selfloop flow, removed 0 redundant places. [2025-04-29 11:01:22,351 INFO L231 Difference]: Finished difference. Result has 399 places, 622 transitions, 12825 flow [2025-04-29 11:01:22,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11150, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12825, PETRI_PLACES=399, PETRI_TRANSITIONS=622} [2025-04-29 11:01:22,352 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 360 predicate places. [2025-04-29 11:01:22,352 INFO L485 AbstractCegarLoop]: Abstraction has has 399 places, 622 transitions, 12825 flow [2025-04-29 11:01:22,352 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:22,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:22,352 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:22,352 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-04-29 11:01:22,352 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:22,353 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2031612525, now seen corresponding path program 4 times [2025-04-29 11:01:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:22,354 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313740317] [2025-04-29 11:01:22,354 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-29 11:01:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:22,360 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-29 11:01:22,366 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:22,366 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-29 11:01:22,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:22,612 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313740317] [2025-04-29 11:01:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313740317] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:22,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798674861] [2025-04-29 11:01:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:22,613 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-29 11:01:22,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:22,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-29 11:01:22,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-29 11:01:22,630 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:22,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 622 transitions, 12825 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:22,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:22,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:22,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:23,999 INFO L116 PetriNetUnfolderBase]: 1517/3456 cut-off events. [2025-04-29 11:01:23,999 INFO L117 PetriNetUnfolderBase]: For 125254/125297 co-relation queries the response was YES. [2025-04-29 11:01:24,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33421 conditions, 3456 events. 1517/3456 cut-off events. For 125254/125297 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 23865 event pairs, 341 based on Foata normal form. 25/3466 useless extension candidates. Maximal degree in co-relation 33138. Up to 1289 conditions per place. [2025-04-29 11:01:24,049 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 543 selfloop transitions, 197 changer transitions 0/766 dead transitions. [2025-04-29 11:01:24,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 766 transitions, 16989 flow [2025-04-29 11:01:24,050 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-29 11:01:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-04-29 11:01:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 326 transitions. [2025-04-29 11:01:24,051 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5224358974358975 [2025-04-29 11:01:24,051 INFO L175 Difference]: Start difference. First operand has 399 places, 622 transitions, 12825 flow. Second operand 16 states and 326 transitions. [2025-04-29 11:01:24,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 766 transitions, 16989 flow [2025-04-29 11:01:24,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 766 transitions, 16857 flow, removed 65 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:24,513 INFO L231 Difference]: Finished difference. Result has 421 places, 647 transitions, 13829 flow [2025-04-29 11:01:24,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12711, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13829, PETRI_PLACES=421, PETRI_TRANSITIONS=647} [2025-04-29 11:01:24,513 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 382 predicate places. [2025-04-29 11:01:24,513 INFO L485 AbstractCegarLoop]: Abstraction has has 421 places, 647 transitions, 13829 flow [2025-04-29 11:01:24,514 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:24,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:24,514 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:24,514 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-04-29 11:01:24,514 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:24,514 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash -341224521, now seen corresponding path program 5 times [2025-04-29 11:01:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:24,515 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310371798] [2025-04-29 11:01:24,515 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:24,522 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:24,530 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:24,530 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:24,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:24,772 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310371798] [2025-04-29 11:01:24,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310371798] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:24,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815993041] [2025-04-29 11:01:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:24,772 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-29 11:01:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:24,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-29 11:01:24,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-04-29 11:01:24,793 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:24,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 647 transitions, 13829 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2025-04-29 11:01:24,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:24,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:24,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:26,073 INFO L116 PetriNetUnfolderBase]: 1635/3681 cut-off events. [2025-04-29 11:01:26,073 INFO L117 PetriNetUnfolderBase]: For 149211/149255 co-relation queries the response was YES. [2025-04-29 11:01:26,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37506 conditions, 3681 events. 1635/3681 cut-off events. For 149211/149255 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25943 event pairs, 335 based on Foata normal form. 23/3701 useless extension candidates. Maximal degree in co-relation 37214. Up to 2312 conditions per place. [2025-04-29 11:01:26,122 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 570 selfloop transitions, 149 changer transitions 0/738 dead transitions. [2025-04-29 11:01:26,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 738 transitions, 16926 flow [2025-04-29 11:01:26,122 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-29 11:01:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-04-29 11:01:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 278 transitions. [2025-04-29 11:01:26,123 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2025-04-29 11:01:26,123 INFO L175 Difference]: Start difference. First operand has 421 places, 647 transitions, 13829 flow. Second operand 16 states and 278 transitions. [2025-04-29 11:01:26,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 738 transitions, 16926 flow [2025-04-29 11:01:26,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 738 transitions, 16539 flow, removed 62 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:26,685 INFO L231 Difference]: Finished difference. Result has 440 places, 680 transitions, 14635 flow [2025-04-29 11:01:26,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13445, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14635, PETRI_PLACES=440, PETRI_TRANSITIONS=680} [2025-04-29 11:01:26,686 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 401 predicate places. [2025-04-29 11:01:26,686 INFO L485 AbstractCegarLoop]: Abstraction has has 440 places, 680 transitions, 14635 flow [2025-04-29 11:01:26,687 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2025-04-29 11:01:26,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:26,687 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:26,687 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-04-29 11:01:26,687 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:26,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash -109148281, now seen corresponding path program 6 times [2025-04-29 11:01:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:26,688 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616950283] [2025-04-29 11:01:26,688 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-29 11:01:26,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:26,697 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:26,699 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:26,699 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-29 11:01:26,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:26,780 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616950283] [2025-04-29 11:01:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616950283] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521741508] [2025-04-29 11:01:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:26,780 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:26,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:26,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:26,787 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2025-04-29 11:01:26,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 680 transitions, 14635 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:26,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:26,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2025-04-29 11:01:26,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:28,530 INFO L116 PetriNetUnfolderBase]: 1923/4182 cut-off events. [2025-04-29 11:01:28,530 INFO L117 PetriNetUnfolderBase]: For 169727/169761 co-relation queries the response was YES. [2025-04-29 11:01:28,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42954 conditions, 4182 events. 1923/4182 cut-off events. For 169727/169761 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 28883 event pairs, 247 based on Foata normal form. 23/4202 useless extension candidates. Maximal degree in co-relation 42653. Up to 1140 conditions per place. [2025-04-29 11:01:28,601 INFO L140 encePairwiseOnDemand]: 23/39 looper letters, 544 selfloop transitions, 316 changer transitions 0/867 dead transitions. [2025-04-29 11:01:28,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 867 transitions, 19851 flow [2025-04-29 11:01:28,603 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-29 11:01:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-29 11:01:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 422 transitions. [2025-04-29 11:01:28,604 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5152625152625152 [2025-04-29 11:01:28,604 INFO L175 Difference]: Start difference. First operand has 440 places, 680 transitions, 14635 flow. Second operand 21 states and 422 transitions. [2025-04-29 11:01:28,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 867 transitions, 19851 flow [2025-04-29 11:01:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 867 transitions, 19674 flow, removed 57 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:29,405 INFO L231 Difference]: Finished difference. Result has 468 places, 737 transitions, 16649 flow [2025-04-29 11:01:29,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14472, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=16649, PETRI_PLACES=468, PETRI_TRANSITIONS=737} [2025-04-29 11:01:29,406 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 429 predicate places. [2025-04-29 11:01:29,406 INFO L485 AbstractCegarLoop]: Abstraction has has 468 places, 737 transitions, 16649 flow [2025-04-29 11:01:29,407 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:29,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:29,407 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:29,407 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-04-29 11:01:29,407 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:29,407 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2120200012, now seen corresponding path program 4 times [2025-04-29 11:01:29,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:29,407 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990083706] [2025-04-29 11:01:29,407 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-29 11:01:29,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:29,415 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-29 11:01:29,421 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:29,421 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-29 11:01:29,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:29,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:29,621 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990083706] [2025-04-29 11:01:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990083706] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:29,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:29,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:29,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195357464] [2025-04-29 11:01:29,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:29,621 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-29 11:01:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:29,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-29 11:01:29,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-04-29 11:01:29,633 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:29,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 737 transitions, 16649 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:29,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:29,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:29,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:31,383 INFO L116 PetriNetUnfolderBase]: 1881/4235 cut-off events. [2025-04-29 11:01:31,383 INFO L117 PetriNetUnfolderBase]: For 205382/205400 co-relation queries the response was YES. [2025-04-29 11:01:31,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46114 conditions, 4235 events. 1881/4235 cut-off events. For 205382/205400 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 30529 event pairs, 379 based on Foata normal form. 22/4257 useless extension candidates. Maximal degree in co-relation 45802. Up to 1842 conditions per place. [2025-04-29 11:01:31,458 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 712 selfloop transitions, 192 changer transitions 0/924 dead transitions. [2025-04-29 11:01:31,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 924 transitions, 22588 flow [2025-04-29 11:01:31,458 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-29 11:01:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-29 11:01:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 376 transitions. [2025-04-29 11:01:31,459 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5074224021592443 [2025-04-29 11:01:31,459 INFO L175 Difference]: Start difference. First operand has 468 places, 737 transitions, 16649 flow. Second operand 19 states and 376 transitions. [2025-04-29 11:01:31,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 924 transitions, 22588 flow [2025-04-29 11:01:32,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 924 transitions, 22266 flow, removed 66 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:32,418 INFO L231 Difference]: Finished difference. Result has 494 places, 784 transitions, 18283 flow [2025-04-29 11:01:32,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=16377, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18283, PETRI_PLACES=494, PETRI_TRANSITIONS=784} [2025-04-29 11:01:32,419 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 455 predicate places. [2025-04-29 11:01:32,419 INFO L485 AbstractCegarLoop]: Abstraction has has 494 places, 784 transitions, 18283 flow [2025-04-29 11:01:32,419 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:32,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:32,419 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:32,419 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-04-29 11:01:32,419 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:32,419 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1034215289, now seen corresponding path program 7 times [2025-04-29 11:01:32,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:32,420 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803110067] [2025-04-29 11:01:32,420 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-29 11:01:32,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:32,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-29 11:01:32,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:32,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:32,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:32,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:32,622 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803110067] [2025-04-29 11:01:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803110067] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:32,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818479366] [2025-04-29 11:01:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:32,623 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-29 11:01:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:32,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-29 11:01:32,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-29 11:01:32,637 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:32,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 784 transitions, 18283 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2025-04-29 11:01:32,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:32,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:34,439 INFO L116 PetriNetUnfolderBase]: 1982/4440 cut-off events. [2025-04-29 11:01:34,440 INFO L117 PetriNetUnfolderBase]: For 238117/238152 co-relation queries the response was YES. [2025-04-29 11:01:34,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50331 conditions, 4440 events. 1982/4440 cut-off events. For 238117/238152 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32644 event pairs, 367 based on Foata normal form. 21/4461 useless extension candidates. Maximal degree in co-relation 50008. Up to 2788 conditions per place. [2025-04-29 11:01:34,512 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 677 selfloop transitions, 184 changer transitions 0/881 dead transitions. [2025-04-29 11:01:34,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 881 transitions, 22001 flow [2025-04-29 11:01:34,513 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-29 11:01:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-04-29 11:01:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 295 transitions. [2025-04-29 11:01:34,513 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.444947209653092 [2025-04-29 11:01:34,513 INFO L175 Difference]: Start difference. First operand has 494 places, 784 transitions, 18283 flow. Second operand 17 states and 295 transitions. [2025-04-29 11:01:34,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 881 transitions, 22001 flow [2025-04-29 11:01:35,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 881 transitions, 21629 flow, removed 110 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:35,728 INFO L231 Difference]: Finished difference. Result has 514 places, 817 transitions, 19322 flow [2025-04-29 11:01:35,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17940, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=19322, PETRI_PLACES=514, PETRI_TRANSITIONS=817} [2025-04-29 11:01:35,729 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 475 predicate places. [2025-04-29 11:01:35,729 INFO L485 AbstractCegarLoop]: Abstraction has has 514 places, 817 transitions, 19322 flow [2025-04-29 11:01:35,729 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2025-04-29 11:01:35,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:35,729 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:35,729 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-04-29 11:01:35,730 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:35,730 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash -375536279, now seen corresponding path program 8 times [2025-04-29 11:01:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:35,730 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990443081] [2025-04-29 11:01:35,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:35,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-29 11:01:35,744 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:35,744 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:35,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:35,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990443081] [2025-04-29 11:01:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990443081] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717672193] [2025-04-29 11:01:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:35,848 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:35,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:35,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:35,856 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2025-04-29 11:01:35,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 817 transitions, 19322 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:35,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:35,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2025-04-29 11:01:35,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:38,142 INFO L116 PetriNetUnfolderBase]: 2336/5014 cut-off events. [2025-04-29 11:01:38,142 INFO L117 PetriNetUnfolderBase]: For 278753/278810 co-relation queries the response was YES. [2025-04-29 11:01:38,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57896 conditions, 5014 events. 2336/5014 cut-off events. For 278753/278810 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 36160 event pairs, 266 based on Foata normal form. 22/5032 useless extension candidates. Maximal degree in co-relation 57566. Up to 1205 conditions per place. [2025-04-29 11:01:38,395 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 548 selfloop transitions, 505 changer transitions 0/1060 dead transitions. [2025-04-29 11:01:38,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1060 transitions, 26584 flow [2025-04-29 11:01:38,395 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-29 11:01:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-04-29 11:01:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 501 transitions. [2025-04-29 11:01:38,396 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2025-04-29 11:01:38,396 INFO L175 Difference]: Start difference. First operand has 514 places, 817 transitions, 19322 flow. Second operand 27 states and 501 transitions. [2025-04-29 11:01:38,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1060 transitions, 26584 flow [2025-04-29 11:01:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1060 transitions, 26335 flow, removed 89 selfloop flow, removed 6 redundant places. [2025-04-29 11:01:39,685 INFO L231 Difference]: Finished difference. Result has 550 places, 896 transitions, 22633 flow [2025-04-29 11:01:39,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19099, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=22633, PETRI_PLACES=550, PETRI_TRANSITIONS=896} [2025-04-29 11:01:39,686 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 511 predicate places. [2025-04-29 11:01:39,686 INFO L485 AbstractCegarLoop]: Abstraction has has 550 places, 896 transitions, 22633 flow [2025-04-29 11:01:39,686 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:39,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:39,686 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:39,686 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-04-29 11:01:39,686 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:39,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1999794662, now seen corresponding path program 5 times [2025-04-29 11:01:39,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:39,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442499443] [2025-04-29 11:01:39,687 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:39,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:39,694 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:39,700 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:39,700 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:39,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-04-29 11:01:40,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:40,060 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442499443] [2025-04-29 11:01:40,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442499443] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:01:40,060 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588370817] [2025-04-29 11:01:40,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 11:01:40,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:01:40,062 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) [2025-04-29 11:01:40,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-29 11:01:40,124 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:40,170 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:40,170 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-29 11:01:40,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:40,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-29 11:01:40,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:01:40,266 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-29 11:01:40,296 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-04-29 11:01:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:40,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:01:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588370817] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-29 11:01:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2025-04-29 11:01:40,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776962902] [2025-04-29 11:01:40,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:40,309 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:40,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:40,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:40,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2025-04-29 11:01:40,326 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:40,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 896 transitions, 22633 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:40,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:40,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:40,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:42,696 INFO L116 PetriNetUnfolderBase]: 2326/5188 cut-off events. [2025-04-29 11:01:42,697 INFO L117 PetriNetUnfolderBase]: For 343893/343937 co-relation queries the response was YES. [2025-04-29 11:01:42,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63447 conditions, 5188 events. 2326/5188 cut-off events. For 343893/343937 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 39298 event pairs, 408 based on Foata normal form. 32/5217 useless extension candidates. Maximal degree in co-relation 63103. Up to 2048 conditions per place. [2025-04-29 11:01:42,798 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 825 selfloop transitions, 315 changer transitions 0/1162 dead transitions. [2025-04-29 11:01:42,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 1162 transitions, 31650 flow [2025-04-29 11:01:42,798 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-29 11:01:42,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-04-29 11:01:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 446 transitions. [2025-04-29 11:01:42,799 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4972129319955407 [2025-04-29 11:01:42,799 INFO L175 Difference]: Start difference. First operand has 550 places, 896 transitions, 22633 flow. Second operand 23 states and 446 transitions. [2025-04-29 11:01:42,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 1162 transitions, 31650 flow [2025-04-29 11:01:44,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 1162 transitions, 31081 flow, removed 226 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:44,539 INFO L231 Difference]: Finished difference. Result has 583 places, 998 transitions, 25950 flow [2025-04-29 11:01:44,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22145, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=25950, PETRI_PLACES=583, PETRI_TRANSITIONS=998} [2025-04-29 11:01:44,540 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 544 predicate places. [2025-04-29 11:01:44,540 INFO L485 AbstractCegarLoop]: Abstraction has has 583 places, 998 transitions, 25950 flow [2025-04-29 11:01:44,541 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:44,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:44,541 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:44,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-29 11:01:44,741 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:01:44,741 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:44,742 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash -36991952, now seen corresponding path program 6 times [2025-04-29 11:01:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:44,742 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384897963] [2025-04-29 11:01:44,742 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-29 11:01:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:44,747 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-04-29 11:01:44,748 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:44,749 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-29 11:01:44,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:44,821 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384897963] [2025-04-29 11:01:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384897963] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442646487] [2025-04-29 11:01:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:44,821 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:44,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:44,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:44,841 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:44,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 998 transitions, 25950 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:44,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:44,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:44,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:47,493 INFO L116 PetriNetUnfolderBase]: 2516/5582 cut-off events. [2025-04-29 11:01:47,493 INFO L117 PetriNetUnfolderBase]: For 407186/407251 co-relation queries the response was YES. [2025-04-29 11:01:47,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70541 conditions, 5582 events. 2516/5582 cut-off events. For 407186/407251 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 43094 event pairs, 492 based on Foata normal form. 30/5609 useless extension candidates. Maximal degree in co-relation 70183. Up to 2045 conditions per place. [2025-04-29 11:01:47,606 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 845 selfloop transitions, 348 changer transitions 0/1215 dead transitions. [2025-04-29 11:01:47,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 1215 transitions, 33826 flow [2025-04-29 11:01:47,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-29 11:01:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-04-29 11:01:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 343 transitions. [2025-04-29 11:01:47,607 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5173453996983409 [2025-04-29 11:01:47,608 INFO L175 Difference]: Start difference. First operand has 583 places, 998 transitions, 25950 flow. Second operand 17 states and 343 transitions. [2025-04-29 11:01:47,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 1215 transitions, 33826 flow [2025-04-29 11:01:50,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1215 transitions, 33158 flow, removed 216 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:50,030 INFO L231 Difference]: Finished difference. Result has 608 places, 1074 transitions, 28781 flow [2025-04-29 11:01:50,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25342, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=28781, PETRI_PLACES=608, PETRI_TRANSITIONS=1074} [2025-04-29 11:01:50,031 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 569 predicate places. [2025-04-29 11:01:50,031 INFO L485 AbstractCegarLoop]: Abstraction has has 608 places, 1074 transitions, 28781 flow [2025-04-29 11:01:50,032 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:50,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:50,032 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:50,032 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-04-29 11:01:50,032 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:50,033 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2066117104, now seen corresponding path program 7 times [2025-04-29 11:01:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:50,033 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85337780] [2025-04-29 11:01:50,033 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-29 11:01:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:50,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-29 11:01:50,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-29 11:01:50,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:50,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-04-29 11:01:50,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:50,271 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85337780] [2025-04-29 11:01:50,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85337780] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:50,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:50,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-29 11:01:50,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635419245] [2025-04-29 11:01:50,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:50,271 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:50,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:50,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:50,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:50,289 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-04-29 11:01:50,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 1074 transitions, 28781 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:50,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:50,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-04-29 11:01:50,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:52,935 INFO L116 PetriNetUnfolderBase]: 2455/5615 cut-off events. [2025-04-29 11:01:52,936 INFO L117 PetriNetUnfolderBase]: For 456021/456131 co-relation queries the response was YES. [2025-04-29 11:01:53,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72665 conditions, 5615 events. 2455/5615 cut-off events. For 456021/456131 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 45251 event pairs, 487 based on Foata normal form. 56/5630 useless extension candidates. Maximal degree in co-relation 72297. Up to 3846 conditions per place. [2025-04-29 11:01:53,078 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 1011 selfloop transitions, 164 changer transitions 0/1252 dead transitions. [2025-04-29 11:01:53,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1252 transitions, 36023 flow [2025-04-29 11:01:53,078 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-29 11:01:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-29 11:01:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2025-04-29 11:01:53,079 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2025-04-29 11:01:53,079 INFO L175 Difference]: Start difference. First operand has 608 places, 1074 transitions, 28781 flow. Second operand 12 states and 238 transitions. [2025-04-29 11:01:53,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 1252 transitions, 36023 flow [2025-04-29 11:01:55,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 1252 transitions, 35205 flow, removed 317 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:55,966 INFO L231 Difference]: Finished difference. Result has 624 places, 1136 transitions, 30858 flow [2025-04-29 11:01:55,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=28200, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=30858, PETRI_PLACES=624, PETRI_TRANSITIONS=1136} [2025-04-29 11:01:55,967 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 585 predicate places. [2025-04-29 11:01:55,968 INFO L485 AbstractCegarLoop]: Abstraction has has 624 places, 1136 transitions, 30858 flow [2025-04-29 11:01:55,968 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:55,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:55,968 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:55,968 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-04-29 11:01:55,968 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-04-29 11:01:55,969 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:55,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1347325732, now seen corresponding path program 8 times [2025-04-29 11:01:55,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:55,969 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452052224] [2025-04-29 11:01:55,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:01:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:55,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-29 11:01:55,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-04-29 11:01:55,976 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:01:55,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-04-29 11:01:56,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:56,052 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452052224] [2025-04-29 11:01:56,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452052224] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:56,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:56,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-29 11:01:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779101558] [2025-04-29 11:01:56,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:56,052 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-29 11:01:56,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:56,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-29 11:01:56,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-04-29 11:01:56,063 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-04-29 11:01:56,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 1136 transitions, 30858 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 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) [2025-04-29 11:01:56,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:56,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-04-29 11:01:56,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15