./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:37:08,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:37:08,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:37:08,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:37:08,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:37:08,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:37:08,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:37:08,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:37:08,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:37:08,526 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:37:08,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:37:08,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:37:08,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:37:08,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:37:08,528 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:08,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:37:08,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:37:08,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:37:08,530 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 -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2025-03-17 19:37:08,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:37:08,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:37:08,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:37:08,796 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:37:08,796 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:37:08,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-03-17 19:37:09,966 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fd28268/15371ebad6cf4984990ac3ae799640d4/FLAG42ddc95d9 [2025-03-17 19:37:10,240 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:37:10,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-03-17 19:37:10,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fd28268/15371ebad6cf4984990ac3ae799640d4/FLAG42ddc95d9 [2025-03-17 19:37:10,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fd28268/15371ebad6cf4984990ac3ae799640d4 [2025-03-17 19:37:10,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:37:10,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:37:10,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:10,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:37:10,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:37:10,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47de7158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10, skipping insertion in model container [2025-03-17 19:37:10,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:37:10,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:10,495 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:37:10,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:10,556 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:37:10,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10 WrapperNode [2025-03-17 19:37:10,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:10,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:10,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:37:10,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:37:10,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,586 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 122 [2025-03-17 19:37:10,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:10,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:37:10,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:37:10,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:37:10,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,615 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2025-03-17 19:37:10,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,621 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:37:10,627 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:37:10,627 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:37:10,627 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:37:10,628 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (1/1) ... [2025-03-17 19:37:10,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:10,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:10,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:37:10,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2025-03-17 19:37:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:37:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:37:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:37:10,669 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:37:10,756 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:37:10,758 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:37:10,950 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:37:10,950 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:37:11,070 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:37:11,070 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:37:11,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:11 BoogieIcfgContainer [2025-03-17 19:37:11,071 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:37:11,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:37:11,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:37:11,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:37:11,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:37:10" (1/3) ... [2025-03-17 19:37:11,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e84c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:11, skipping insertion in model container [2025-03-17 19:37:11,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:10" (2/3) ... [2025-03-17 19:37:11,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e84c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:11, skipping insertion in model container [2025-03-17 19:37:11,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:11" (3/3) ... [2025-03-17 19:37:11,080 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-03-17 19:37:11,090 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:37:11,092 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 36 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-03-17 19:37:11,093 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:37:11,131 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:37:11,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 41 transitions, 86 flow [2025-03-17 19:37:11,192 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-03-17 19:37:11,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:11,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-03-17 19:37:11,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 41 transitions, 86 flow [2025-03-17 19:37:11,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 83 flow [2025-03-17 19:37:11,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:11,219 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@172c0216, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:11,220 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-17 19:37:11,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:11,227 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2025-03-17 19:37:11,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:11,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:11,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:11,228 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:11,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash -38083160, now seen corresponding path program 1 times [2025-03-17 19:37:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297610448] [2025-03-17 19:37:11,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:11,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:11,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:11,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:11,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:11,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297610448] [2025-03-17 19:37:11,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297610448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:11,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:11,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:11,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479903731] [2025-03-17 19:37:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:11,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:37:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:11,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:37:11,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:37:11,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-03-17 19:37:11,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:11,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:11,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-03-17 19:37:11,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:11,946 INFO L124 PetriNetUnfolderBase]: 363/738 cut-off events. [2025-03-17 19:37:11,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:11,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 738 events. 363/738 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3604 event pairs, 35 based on Foata normal form. 64/658 useless extension candidates. Maximal degree in co-relation 1367. Up to 352 conditions per place. [2025-03-17 19:37:11,956 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 72 selfloop transitions, 9 changer transitions 0/93 dead transitions. [2025-03-17 19:37:11,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 93 transitions, 351 flow [2025-03-17 19:37:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:37:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:37:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2025-03-17 19:37:11,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7032520325203252 [2025-03-17 19:37:11,970 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 83 flow. Second operand 6 states and 173 transitions. [2025-03-17 19:37:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 93 transitions, 351 flow [2025-03-17 19:37:11,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 93 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:37:11,979 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 148 flow [2025-03-17 19:37:11,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2025-03-17 19:37:11,984 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2025-03-17 19:37:11,984 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 148 flow [2025-03-17 19:37:11,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:11,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:11,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:11,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:37:11,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:11,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2056792776, now seen corresponding path program 1 times [2025-03-17 19:37:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239153562] [2025-03-17 19:37:11,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:12,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:37:12,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:37:12,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:12,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239153562] [2025-03-17 19:37:12,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239153562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:12,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:12,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935372176] [2025-03-17 19:37:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:12,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:37:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:12,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:37:12,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:37:12,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2025-03-17 19:37:12,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:12,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:12,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2025-03-17 19:37:12,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:12,319 INFO L124 PetriNetUnfolderBase]: 298/648 cut-off events. [2025-03-17 19:37:12,320 INFO L125 PetriNetUnfolderBase]: For 135/139 co-relation queries the response was YES. [2025-03-17 19:37:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 648 events. 298/648 cut-off events. For 135/139 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3157 event pairs, 26 based on Foata normal form. 22/593 useless extension candidates. Maximal degree in co-relation 1386. Up to 378 conditions per place. [2025-03-17 19:37:12,327 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 66 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2025-03-17 19:37:12,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 389 flow [2025-03-17 19:37:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:37:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:37:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2025-03-17 19:37:12,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2025-03-17 19:37:12,329 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 148 flow. Second operand 6 states and 165 transitions. [2025-03-17 19:37:12,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 389 flow [2025-03-17 19:37:12,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 389 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:12,334 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 192 flow [2025-03-17 19:37:12,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2025-03-17 19:37:12,335 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2025-03-17 19:37:12,335 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 192 flow [2025-03-17 19:37:12,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:12,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:12,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:12,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:37:12,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:12,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash -605919577, now seen corresponding path program 1 times [2025-03-17 19:37:12,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:12,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908204534] [2025-03-17 19:37:12,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:12,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:37:12,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:37:12,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:12,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:12,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908204534] [2025-03-17 19:37:12,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908204534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:12,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:12,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320273873] [2025-03-17 19:37:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:12,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:37:12,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:12,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:37:12,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:37:12,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2025-03-17 19:37:12,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2025-03-17 19:37:12,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:12,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2025-03-17 19:37:12,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:12,690 INFO L124 PetriNetUnfolderBase]: 467/992 cut-off events. [2025-03-17 19:37:12,690 INFO L125 PetriNetUnfolderBase]: For 570/585 co-relation queries the response was YES. [2025-03-17 19:37:12,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 992 events. 467/992 cut-off events. For 570/585 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5302 event pairs, 95 based on Foata normal form. 32/945 useless extension candidates. Maximal degree in co-relation 2372. Up to 491 conditions per place. [2025-03-17 19:37:12,696 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 93 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2025-03-17 19:37:12,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 124 transitions, 745 flow [2025-03-17 19:37:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:37:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:37:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2025-03-17 19:37:12,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2025-03-17 19:37:12,700 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 192 flow. Second operand 6 states and 155 transitions. [2025-03-17 19:37:12,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 124 transitions, 745 flow [2025-03-17 19:37:12,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 124 transitions, 719 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 19:37:12,706 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 351 flow [2025-03-17 19:37:12,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2025-03-17 19:37:12,707 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2025-03-17 19:37:12,707 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 351 flow [2025-03-17 19:37:12,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2025-03-17 19:37:12,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:12,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:12,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:37:12,707 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:12,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1603637394, now seen corresponding path program 1 times [2025-03-17 19:37:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:12,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540529349] [2025-03-17 19:37:12,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:12,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:12,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:37:12,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:37:12,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:12,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:12,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540529349] [2025-03-17 19:37:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540529349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:12,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361050672] [2025-03-17 19:37:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:12,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:12,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:12,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:12,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:12,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2025-03-17 19:37:12,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:12,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:12,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2025-03-17 19:37:12,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:12,969 INFO L124 PetriNetUnfolderBase]: 335/756 cut-off events. [2025-03-17 19:37:12,970 INFO L125 PetriNetUnfolderBase]: For 759/801 co-relation queries the response was YES. [2025-03-17 19:37:12,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 756 events. 335/756 cut-off events. For 759/801 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3719 event pairs, 111 based on Foata normal form. 35/765 useless extension candidates. Maximal degree in co-relation 2099. Up to 454 conditions per place. [2025-03-17 19:37:12,977 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 57 selfloop transitions, 11 changer transitions 3/86 dead transitions. [2025-03-17 19:37:12,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 555 flow [2025-03-17 19:37:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-17 19:37:12,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2025-03-17 19:37:12,979 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 351 flow. Second operand 5 states and 130 transitions. [2025-03-17 19:37:12,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 555 flow [2025-03-17 19:37:12,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 533 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-17 19:37:12,988 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 365 flow [2025-03-17 19:37:12,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2025-03-17 19:37:12,990 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2025-03-17 19:37:12,990 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 365 flow [2025-03-17 19:37:12,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:12,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:12,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:12,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:37:12,991 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:12,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 897893038, now seen corresponding path program 1 times [2025-03-17 19:37:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988332293] [2025-03-17 19:37:12,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:13,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:37:13,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:37:13,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:13,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:13,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:13,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988332293] [2025-03-17 19:37:13,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988332293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:13,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:13,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340025318] [2025-03-17 19:37:13,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:13,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:13,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:13,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:13,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-03-17 19:37:13,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:13,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:13,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-03-17 19:37:13,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:13,211 INFO L124 PetriNetUnfolderBase]: 398/863 cut-off events. [2025-03-17 19:37:13,211 INFO L125 PetriNetUnfolderBase]: For 1267/1349 co-relation queries the response was YES. [2025-03-17 19:37:13,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 863 events. 398/863 cut-off events. For 1267/1349 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4469 event pairs, 35 based on Foata normal form. 80/911 useless extension candidates. Maximal degree in co-relation 2527. Up to 559 conditions per place. [2025-03-17 19:37:13,218 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 84 selfloop transitions, 3 changer transitions 1/101 dead transitions. [2025-03-17 19:37:13,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 717 flow [2025-03-17 19:37:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-17 19:37:13,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2025-03-17 19:37:13,222 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 365 flow. Second operand 4 states and 111 transitions. [2025-03-17 19:37:13,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 717 flow [2025-03-17 19:37:13,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 715 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:13,228 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 383 flow [2025-03-17 19:37:13,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2025-03-17 19:37:13,229 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2025-03-17 19:37:13,231 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 383 flow [2025-03-17 19:37:13,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:13,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:13,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:13,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:37:13,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:13,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1088038536, now seen corresponding path program 1 times [2025-03-17 19:37:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:13,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563963008] [2025-03-17 19:37:13,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:13,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:13,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:37:13,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:37:13,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:13,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563963008] [2025-03-17 19:37:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563963008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:13,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766610808] [2025-03-17 19:37:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:13,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:37:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:13,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:37:13,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:37:13,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2025-03-17 19:37:13,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2025-03-17 19:37:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:13,588 INFO L124 PetriNetUnfolderBase]: 367/867 cut-off events. [2025-03-17 19:37:13,588 INFO L125 PetriNetUnfolderBase]: For 1185/1206 co-relation queries the response was YES. [2025-03-17 19:37:13,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 867 events. 367/867 cut-off events. For 1185/1206 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4668 event pairs, 177 based on Foata normal form. 7/870 useless extension candidates. Maximal degree in co-relation 2569. Up to 609 conditions per place. [2025-03-17 19:37:13,595 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 57 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2025-03-17 19:37:13,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 572 flow [2025-03-17 19:37:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-17 19:37:13,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5707317073170731 [2025-03-17 19:37:13,597 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 383 flow. Second operand 5 states and 117 transitions. [2025-03-17 19:37:13,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 572 flow [2025-03-17 19:37:13,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 559 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:37:13,602 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 400 flow [2025-03-17 19:37:13,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2025-03-17 19:37:13,603 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2025-03-17 19:37:13,603 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 400 flow [2025-03-17 19:37:13,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:13,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:13,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:13,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:37:13,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:13,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:13,605 INFO L85 PathProgramCache]: Analyzing trace with hash -657563316, now seen corresponding path program 2 times [2025-03-17 19:37:13,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:13,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357717683] [2025-03-17 19:37:13,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:37:13,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:13,613 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:37:13,620 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:37:13,620 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:37:13,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357717683] [2025-03-17 19:37:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357717683] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:13,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:13,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187870413] [2025-03-17 19:37:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:13,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:37:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:13,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:37:13,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:37:13,711 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2025-03-17 19:37:13,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:13,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:13,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2025-03-17 19:37:13,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:13,907 INFO L124 PetriNetUnfolderBase]: 343/807 cut-off events. [2025-03-17 19:37:13,907 INFO L125 PetriNetUnfolderBase]: For 1214/1235 co-relation queries the response was YES. [2025-03-17 19:37:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 807 events. 343/807 cut-off events. For 1214/1235 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3989 event pairs, 124 based on Foata normal form. 24/829 useless extension candidates. Maximal degree in co-relation 2473. Up to 477 conditions per place. [2025-03-17 19:37:13,913 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 81 selfloop transitions, 14 changer transitions 3/112 dead transitions. [2025-03-17 19:37:13,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 112 transitions, 789 flow [2025-03-17 19:37:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:37:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:37:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2025-03-17 19:37:13,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2025-03-17 19:37:13,914 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 400 flow. Second operand 8 states and 193 transitions. [2025-03-17 19:37:13,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 112 transitions, 789 flow [2025-03-17 19:37:13,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 775 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-17 19:37:13,920 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 430 flow [2025-03-17 19:37:13,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=430, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2025-03-17 19:37:13,921 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2025-03-17 19:37:13,921 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 430 flow [2025-03-17 19:37:13,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:13,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:13,921 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:13,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:37:13,922 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:13,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1720796169, now seen corresponding path program 1 times [2025-03-17 19:37:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:13,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117951224] [2025-03-17 19:37:13,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:13,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:37:13,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:37:13,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:13,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117951224] [2025-03-17 19:37:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117951224] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:37:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320004741] [2025-03-17 19:37:14,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:14,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:37:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:14,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:37:14,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:37:14,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:37:14,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:37:14,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:14,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:14,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:37:14,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:37:14,258 INFO L378 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 11 treesize of output 7 [2025-03-17 19:37:14,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 3 [2025-03-17 19:37:14,463 INFO L378 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 15 treesize of output 7 [2025-03-17 19:37:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:14,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:37:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320004741] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:37:14,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:37:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2025-03-17 19:37:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503746398] [2025-03-17 19:37:14,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:37:14,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 19:37:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:14,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 19:37:14,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2025-03-17 19:37:14,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2025-03-17 19:37:14,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 430 flow. Second operand has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 21 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:14,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:14,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2025-03-17 19:37:14,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:15,732 INFO L124 PetriNetUnfolderBase]: 1350/2841 cut-off events. [2025-03-17 19:37:15,732 INFO L125 PetriNetUnfolderBase]: For 6132/6403 co-relation queries the response was YES. [2025-03-17 19:37:15,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9383 conditions, 2841 events. 1350/2841 cut-off events. For 6132/6403 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 16742 event pairs, 99 based on Foata normal form. 226/3051 useless extension candidates. Maximal degree in co-relation 9349. Up to 570 conditions per place. [2025-03-17 19:37:15,752 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 333 selfloop transitions, 81 changer transitions 0/428 dead transitions. [2025-03-17 19:37:15,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 428 transitions, 3566 flow [2025-03-17 19:37:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:37:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:37:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 521 transitions. [2025-03-17 19:37:15,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6051103368176539 [2025-03-17 19:37:15,756 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 430 flow. Second operand 21 states and 521 transitions. [2025-03-17 19:37:15,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 428 transitions, 3566 flow [2025-03-17 19:37:15,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 428 transitions, 3262 flow, removed 55 selfloop flow, removed 6 redundant places. [2025-03-17 19:37:15,779 INFO L231 Difference]: Finished difference. Result has 103 places, 152 transitions, 1335 flow [2025-03-17 19:37:15,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1335, PETRI_PLACES=103, PETRI_TRANSITIONS=152} [2025-03-17 19:37:15,779 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2025-03-17 19:37:15,780 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 152 transitions, 1335 flow [2025-03-17 19:37:15,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 21 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:15,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:15,780 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:15,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:37:15,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:37:15,981 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:15,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:15,982 INFO L85 PathProgramCache]: Analyzing trace with hash -353557415, now seen corresponding path program 1 times [2025-03-17 19:37:15,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:15,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332961528] [2025-03-17 19:37:15,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:15,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:15,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:37:15,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:37:15,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:15,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:16,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:16,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332961528] [2025-03-17 19:37:16,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332961528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:16,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:16,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:37:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777074561] [2025-03-17 19:37:16,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:16,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:37:16,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:16,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:37:16,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:37:16,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-03-17 19:37:16,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 152 transitions, 1335 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:16,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:16,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-03-17 19:37:16,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:16,944 INFO L124 PetriNetUnfolderBase]: 2681/5651 cut-off events. [2025-03-17 19:37:16,945 INFO L125 PetriNetUnfolderBase]: For 16157/16586 co-relation queries the response was YES. [2025-03-17 19:37:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20382 conditions, 5651 events. 2681/5651 cut-off events. For 16157/16586 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 38398 event pairs, 273 based on Foata normal form. 341/5977 useless extension candidates. Maximal degree in co-relation 20340. Up to 1219 conditions per place. [2025-03-17 19:37:16,983 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 295 selfloop transitions, 189 changer transitions 0/501 dead transitions. [2025-03-17 19:37:16,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 501 transitions, 5133 flow [2025-03-17 19:37:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:37:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:37:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2025-03-17 19:37:16,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.624390243902439 [2025-03-17 19:37:16,985 INFO L175 Difference]: Start difference. First operand has 103 places, 152 transitions, 1335 flow. Second operand 10 states and 256 transitions. [2025-03-17 19:37:16,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 501 transitions, 5133 flow [2025-03-17 19:37:17,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 501 transitions, 4546 flow, removed 269 selfloop flow, removed 6 redundant places. [2025-03-17 19:37:17,040 INFO L231 Difference]: Finished difference. Result has 113 places, 325 transitions, 3387 flow [2025-03-17 19:37:17,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3387, PETRI_PLACES=113, PETRI_TRANSITIONS=325} [2025-03-17 19:37:17,041 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2025-03-17 19:37:17,041 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 325 transitions, 3387 flow [2025-03-17 19:37:17,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:17,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:17,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:17,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:37:17,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:17,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2078178297, now seen corresponding path program 2 times [2025-03-17 19:37:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:17,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558278865] [2025-03-17 19:37:17,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:37:17,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:17,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:37:17,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:37:17,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:37:17,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:17,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558278865] [2025-03-17 19:37:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558278865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:17,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:37:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854968342] [2025-03-17 19:37:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:17,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:37:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:17,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:37:17,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:37:17,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-03-17 19:37:17,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 325 transitions, 3387 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:17,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:17,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-03-17 19:37:17,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:18,336 INFO L124 PetriNetUnfolderBase]: 3813/8209 cut-off events. [2025-03-17 19:37:18,336 INFO L125 PetriNetUnfolderBase]: For 36701/37292 co-relation queries the response was YES. [2025-03-17 19:37:18,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32936 conditions, 8209 events. 3813/8209 cut-off events. For 36701/37292 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 60827 event pairs, 514 based on Foata normal form. 446/8601 useless extension candidates. Maximal degree in co-relation 32890. Up to 1798 conditions per place. [2025-03-17 19:37:18,398 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 294 selfloop transitions, 386 changer transitions 0/697 dead transitions. [2025-03-17 19:37:18,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 697 transitions, 8261 flow [2025-03-17 19:37:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:37:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:37:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 292 transitions. [2025-03-17 19:37:18,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2025-03-17 19:37:18,460 INFO L175 Difference]: Start difference. First operand has 113 places, 325 transitions, 3387 flow. Second operand 12 states and 292 transitions. [2025-03-17 19:37:18,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 697 transitions, 8261 flow [2025-03-17 19:37:18,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 697 transitions, 8245 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:18,567 INFO L231 Difference]: Finished difference. Result has 133 places, 536 transitions, 7240 flow [2025-03-17 19:37:18,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3361, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7240, PETRI_PLACES=133, PETRI_TRANSITIONS=536} [2025-03-17 19:37:18,569 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 95 predicate places. [2025-03-17 19:37:18,569 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 536 transitions, 7240 flow [2025-03-17 19:37:18,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:18,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:18,569 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:18,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:37:18,569 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:18,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash 656734459, now seen corresponding path program 3 times [2025-03-17 19:37:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586614295] [2025-03-17 19:37:18,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:37:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:18,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:37:18,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:37:18,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 19:37:18,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:18,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586614295] [2025-03-17 19:37:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586614295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:18,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:18,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:37:18,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060052937] [2025-03-17 19:37:18,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:18,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 19:37:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:18,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 19:37:18,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:37:18,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-03-17 19:37:18,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 536 transitions, 7240 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:18,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:18,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-03-17 19:37:18,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:20,672 INFO L124 PetriNetUnfolderBase]: 5213/10803 cut-off events. [2025-03-17 19:37:20,672 INFO L125 PetriNetUnfolderBase]: For 87029/87831 co-relation queries the response was YES. [2025-03-17 19:37:20,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51535 conditions, 10803 events. 5213/10803 cut-off events. For 87029/87831 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 82033 event pairs, 1305 based on Foata normal form. 664/11426 useless extension candidates. Maximal degree in co-relation 51480. Up to 6222 conditions per place. [2025-03-17 19:37:20,755 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 676 selfloop transitions, 229 changer transitions 3/921 dead transitions. [2025-03-17 19:37:20,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 921 transitions, 13552 flow [2025-03-17 19:37:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 19:37:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-17 19:37:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 319 transitions. [2025-03-17 19:37:20,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48628048780487804 [2025-03-17 19:37:20,757 INFO L175 Difference]: Start difference. First operand has 133 places, 536 transitions, 7240 flow. Second operand 16 states and 319 transitions. [2025-03-17 19:37:20,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 921 transitions, 13552 flow [2025-03-17 19:37:21,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 921 transitions, 13376 flow, removed 88 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:21,022 INFO L231 Difference]: Finished difference. Result has 155 places, 711 transitions, 10773 flow [2025-03-17 19:37:21,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7142, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10773, PETRI_PLACES=155, PETRI_TRANSITIONS=711} [2025-03-17 19:37:21,022 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2025-03-17 19:37:21,023 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 711 transitions, 10773 flow [2025-03-17 19:37:21,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:21,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:21,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:21,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:37:21,023 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:21,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:21,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1805073968, now seen corresponding path program 1 times [2025-03-17 19:37:21,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948726361] [2025-03-17 19:37:21,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:21,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:37:21,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:37:21,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:21,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:37:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948726361] [2025-03-17 19:37:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948726361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847040734] [2025-03-17 19:37:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:21,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:21,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:21,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:21,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-03-17 19:37:21,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 711 transitions, 10773 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:21,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:21,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-03-17 19:37:21,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:22,709 INFO L124 PetriNetUnfolderBase]: 4780/10131 cut-off events. [2025-03-17 19:37:22,709 INFO L125 PetriNetUnfolderBase]: For 96526/97388 co-relation queries the response was YES. [2025-03-17 19:37:22,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50878 conditions, 10131 events. 4780/10131 cut-off events. For 96526/97388 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 77766 event pairs, 1027 based on Foata normal form. 795/10824 useless extension candidates. Maximal degree in co-relation 50814. Up to 5139 conditions per place. [2025-03-17 19:37:22,784 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 739 selfloop transitions, 138 changer transitions 0/899 dead transitions. [2025-03-17 19:37:22,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 899 transitions, 15297 flow [2025-03-17 19:37:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-03-17 19:37:22,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2025-03-17 19:37:22,785 INFO L175 Difference]: Start difference. First operand has 155 places, 711 transitions, 10773 flow. Second operand 4 states and 107 transitions. [2025-03-17 19:37:22,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 899 transitions, 15297 flow [2025-03-17 19:37:23,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 899 transitions, 15089 flow, removed 84 selfloop flow, removed 4 redundant places. [2025-03-17 19:37:23,114 INFO L231 Difference]: Finished difference. Result has 156 places, 722 transitions, 11384 flow [2025-03-17 19:37:23,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10033, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=11384, PETRI_PLACES=156, PETRI_TRANSITIONS=722} [2025-03-17 19:37:23,115 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 118 predicate places. [2025-03-17 19:37:23,115 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 722 transitions, 11384 flow [2025-03-17 19:37:23,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:23,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:23,116 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:23,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:37:23,116 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:23,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash 122713321, now seen corresponding path program 1 times [2025-03-17 19:37:23,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:23,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909652837] [2025-03-17 19:37:23,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:23,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:37:23,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:37:23,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:23,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909652837] [2025-03-17 19:37:23,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909652837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:37:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925496447] [2025-03-17 19:37:23,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:23,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:37:23,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:23,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:37:23,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:37:23,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:37:23,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:37:23,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:23,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:23,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:37:23,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:37:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:23,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:37:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925496447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:23,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:37:23,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2025-03-17 19:37:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671159887] [2025-03-17 19:37:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:23,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:37:23,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:23,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:37:23,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 19:37:23,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-03-17 19:37:23,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 722 transitions, 11384 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:23,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:23,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-03-17 19:37:23,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:25,709 INFO L124 PetriNetUnfolderBase]: 4926/10218 cut-off events. [2025-03-17 19:37:25,709 INFO L125 PetriNetUnfolderBase]: For 105299/106074 co-relation queries the response was YES. [2025-03-17 19:37:25,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54685 conditions, 10218 events. 4926/10218 cut-off events. For 105299/106074 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 76421 event pairs, 1281 based on Foata normal form. 731/10648 useless extension candidates. Maximal degree in co-relation 54620. Up to 6271 conditions per place. [2025-03-17 19:37:25,782 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 815 selfloop transitions, 115 changer transitions 32/985 dead transitions. [2025-03-17 19:37:25,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 985 transitions, 17218 flow [2025-03-17 19:37:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:37:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:37:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2025-03-17 19:37:25,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2025-03-17 19:37:25,784 INFO L175 Difference]: Start difference. First operand has 156 places, 722 transitions, 11384 flow. Second operand 6 states and 156 transitions. [2025-03-17 19:37:25,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 985 transitions, 17218 flow [2025-03-17 19:37:26,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 985 transitions, 17206 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:26,153 INFO L231 Difference]: Finished difference. Result has 160 places, 721 transitions, 11598 flow [2025-03-17 19:37:26,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11368, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11598, PETRI_PLACES=160, PETRI_TRANSITIONS=721} [2025-03-17 19:37:26,154 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 122 predicate places. [2025-03-17 19:37:26,154 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 721 transitions, 11598 flow [2025-03-17 19:37:26,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:26,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:26,155 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:26,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:37:26,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 19:37:26,356 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:26,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -490854061, now seen corresponding path program 1 times [2025-03-17 19:37:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909549491] [2025-03-17 19:37:26,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:26,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:26,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:37:26,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:37:26,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:26,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909549491] [2025-03-17 19:37:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909549491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:37:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055030881] [2025-03-17 19:37:26,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:26,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:37:26,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:26,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:37:26,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:37:26,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:37:26,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:37:26,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:26,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:26,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:37:26,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:37:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:26,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:37:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055030881] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:37:26,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:37:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 17 [2025-03-17 19:37:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77792172] [2025-03-17 19:37:26,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:37:26,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 19:37:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:26,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 19:37:26,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2025-03-17 19:37:26,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-03-17 19:37:26,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 721 transitions, 11598 flow. Second operand has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:26,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:26,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-03-17 19:37:26,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:32,238 INFO L124 PetriNetUnfolderBase]: 13408/26814 cut-off events. [2025-03-17 19:37:32,238 INFO L125 PetriNetUnfolderBase]: For 286121/288377 co-relation queries the response was YES. [2025-03-17 19:37:32,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146957 conditions, 26814 events. 13408/26814 cut-off events. For 286121/288377 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 226391 event pairs, 2079 based on Foata normal form. 1956/28599 useless extension candidates. Maximal degree in co-relation 146891. Up to 8218 conditions per place. [2025-03-17 19:37:32,561 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 1950 selfloop transitions, 331 changer transitions 28/2329 dead transitions. [2025-03-17 19:37:32,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 2329 transitions, 40647 flow [2025-03-17 19:37:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:37:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:37:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 502 transitions. [2025-03-17 19:37:32,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5565410199556541 [2025-03-17 19:37:32,563 INFO L175 Difference]: Start difference. First operand has 160 places, 721 transitions, 11598 flow. Second operand 22 states and 502 transitions. [2025-03-17 19:37:32,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 2329 transitions, 40647 flow [2025-03-17 19:37:33,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 2329 transitions, 40585 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-17 19:37:33,959 INFO L231 Difference]: Finished difference. Result has 185 places, 983 transitions, 16934 flow [2025-03-17 19:37:33,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11549, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16934, PETRI_PLACES=185, PETRI_TRANSITIONS=983} [2025-03-17 19:37:33,960 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 147 predicate places. [2025-03-17 19:37:33,960 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 983 transitions, 16934 flow [2025-03-17 19:37:33,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:33,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:33,960 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:33,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:37:34,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:37:34,161 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:34,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1923782887, now seen corresponding path program 1 times [2025-03-17 19:37:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:34,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062397234] [2025-03-17 19:37:34,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:34,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:37:34,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:37:34,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:34,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062397234] [2025-03-17 19:37:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062397234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:34,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:34,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 19:37:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763815333] [2025-03-17 19:37:34,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:34,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 19:37:34,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:34,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 19:37:34,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-03-17 19:37:34,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-03-17 19:37:34,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 983 transitions, 16934 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:34,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:34,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-03-17 19:37:34,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:44,166 INFO L124 PetriNetUnfolderBase]: 19476/39388 cut-off events. [2025-03-17 19:37:44,166 INFO L125 PetriNetUnfolderBase]: For 499967/502042 co-relation queries the response was YES. [2025-03-17 19:37:44,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226381 conditions, 39388 events. 19476/39388 cut-off events. For 499967/502042 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 359454 event pairs, 4850 based on Foata normal form. 1973/41125 useless extension candidates. Maximal degree in co-relation 226307. Up to 24691 conditions per place. [2025-03-17 19:37:44,691 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 1163 selfloop transitions, 557 changer transitions 0/1732 dead transitions. [2025-03-17 19:37:44,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1732 transitions, 32318 flow [2025-03-17 19:37:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-17 19:37:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-17 19:37:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 495 transitions. [2025-03-17 19:37:44,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4643527204502814 [2025-03-17 19:37:44,693 INFO L175 Difference]: Start difference. First operand has 185 places, 983 transitions, 16934 flow. Second operand 26 states and 495 transitions. [2025-03-17 19:37:44,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1732 transitions, 32318 flow [2025-03-17 19:37:47,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1732 transitions, 32155 flow, removed 33 selfloop flow, removed 7 redundant places. [2025-03-17 19:37:48,002 INFO L231 Difference]: Finished difference. Result has 216 places, 1480 transitions, 28804 flow [2025-03-17 19:37:48,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16726, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=28804, PETRI_PLACES=216, PETRI_TRANSITIONS=1480} [2025-03-17 19:37:48,003 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 178 predicate places. [2025-03-17 19:37:48,003 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 1480 transitions, 28804 flow [2025-03-17 19:37:48,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:48,003 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:48,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:37:48,004 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:37:48,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash -377688369, now seen corresponding path program 2 times [2025-03-17 19:37:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:48,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344134009] [2025-03-17 19:37:48,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:37:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:48,011 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:37:48,016 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:37:48,016 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:37:48,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344134009] [2025-03-17 19:37:48,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344134009] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:48,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:48,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 19:37:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132629558] [2025-03-17 19:37:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:48,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 19:37:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:48,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 19:37:48,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-17 19:37:48,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-03-17 19:37:48,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1480 transitions, 28804 flow. Second operand has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:48,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-03-17 19:37:48,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:01,887 INFO L124 PetriNetUnfolderBase]: 21338/43225 cut-off events. [2025-03-17 19:38:01,887 INFO L125 PetriNetUnfolderBase]: For 692743/694822 co-relation queries the response was YES. [2025-03-17 19:38:02,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267811 conditions, 43225 events. 21338/43225 cut-off events. For 692743/694822 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 400570 event pairs, 5333 based on Foata normal form. 1713/44647 useless extension candidates. Maximal degree in co-relation 267722. Up to 25086 conditions per place. [2025-03-17 19:38:02,621 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 1164 selfloop transitions, 671 changer transitions 0/1847 dead transitions. [2025-03-17 19:38:02,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1847 transitions, 38172 flow [2025-03-17 19:38:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:38:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:38:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 401 transitions. [2025-03-17 19:38:02,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4657375145180023 [2025-03-17 19:38:02,623 INFO L175 Difference]: Start difference. First operand has 216 places, 1480 transitions, 28804 flow. Second operand 21 states and 401 transitions. [2025-03-17 19:38:02,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1847 transitions, 38172 flow [2025-03-17 19:38:08,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1847 transitions, 38024 flow, removed 41 selfloop flow, removed 10 redundant places. [2025-03-17 19:38:08,764 INFO L231 Difference]: Finished difference. Result has 234 places, 1623 transitions, 34355 flow [2025-03-17 19:38:08,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=28513, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=34355, PETRI_PLACES=234, PETRI_TRANSITIONS=1623} [2025-03-17 19:38:08,765 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 196 predicate places. [2025-03-17 19:38:08,765 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 1623 transitions, 34355 flow [2025-03-17 19:38:08,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:08,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:08,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:08,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:38:08,766 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:38:08,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash 68122745, now seen corresponding path program 3 times [2025-03-17 19:38:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840729551] [2025-03-17 19:38:08,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:38:08,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:08,773 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:38:08,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:38:08,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 19:38:08,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840729551] [2025-03-17 19:38:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840729551] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:09,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:09,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 19:38:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564991824] [2025-03-17 19:38:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:09,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 19:38:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:09,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 19:38:09,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-17 19:38:09,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-03-17 19:38:09,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 1623 transitions, 34355 flow. Second operand has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:09,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:09,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-03-17 19:38:09,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand