./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.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/28-race_reach_73-funloop_hard_racefree.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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:39:03,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:39:03,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:39:03,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:39:03,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:39:03,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:39:03,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:39:03,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:39:03,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:39:03,284 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:39:03,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:39:03,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:39:03,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:39:03,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:39:03,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:39:03,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:39:03,286 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:39:03,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:03,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:39:03,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:39:03,287 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 -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2025-03-17 19:39:03,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:39:03,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:39:03,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:39:03,532 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:39:03,532 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:39:03,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2025-03-17 19:39:04,687 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737236852/612fb8cbeda344cc9f8bf9d4e7d49866/FLAG50ebb15e4 [2025-03-17 19:39:04,937 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:39:04,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2025-03-17 19:39:04,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737236852/612fb8cbeda344cc9f8bf9d4e7d49866/FLAG50ebb15e4 [2025-03-17 19:39:04,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737236852/612fb8cbeda344cc9f8bf9d4e7d49866 [2025-03-17 19:39:04,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:39:04,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:39:04,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:04,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:39:04,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:39:04,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:04" (1/1) ... [2025-03-17 19:39:04,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56775dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:04, skipping insertion in model container [2025-03-17 19:39:04,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:04" (1/1) ... [2025-03-17 19:39:05,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:39:05,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:05,371 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:39:05,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:05,444 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:39:05,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05 WrapperNode [2025-03-17 19:39:05,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:05,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:05,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:39:05,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:39:05,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,493 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 342 [2025-03-17 19:39:05,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:05,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:39:05,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:39:05,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:39:05,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,537 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2025-03-17 19:39:05,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:39:05,563 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:39:05,563 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:39:05,564 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:39:05,565 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:05,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:05,594 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 19:39:05,600 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 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:39:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:39:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:39:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:39:05,617 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 19:39:05,739 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:39:05,741 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:39:06,074 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L953: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:39:06,075 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L953-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:39:06,145 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:39:06,145 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:39:06,421 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:39:06,421 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:39:06,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:06 BoogieIcfgContainer [2025-03-17 19:39:06,422 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:39:06,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:39:06,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:39:06,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:39:06,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:39:04" (1/3) ... [2025-03-17 19:39:06,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71baaab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:06, skipping insertion in model container [2025-03-17 19:39:06,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05" (2/3) ... [2025-03-17 19:39:06,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71baaab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:06, skipping insertion in model container [2025-03-17 19:39:06,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:06" (3/3) ... [2025-03-17 19:39:06,428 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2025-03-17 19:39:06,439 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:39:06,441 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_73-funloop_hard_racefree.i that has 2 procedures, 126 locations, 1 initial locations, 17 loop locations, and 22 error locations. [2025-03-17 19:39:06,441 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:39:06,507 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:39:06,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2025-03-17 19:39:06,601 INFO L124 PetriNetUnfolderBase]: 60/257 cut-off events. [2025-03-17 19:39:06,603 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:06,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 257 events. 60/257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1293 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2025-03-17 19:39:06,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2025-03-17 19:39:06,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2025-03-17 19:39:06,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:06,643 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;@41da9126, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:06,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 19:39:06,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:06,651 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:06,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:06,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:06,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:06,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:06,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash 841081, now seen corresponding path program 1 times [2025-03-17 19:39:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361360101] [2025-03-17 19:39:06,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:06,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:06,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:06,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:06,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:06,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:06,919 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 19:39:06,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361360101] [2025-03-17 19:39:06,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361360101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:06,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:06,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972530231] [2025-03-17 19:39:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:06,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:06,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:06,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:06,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-17 19:39:06,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 19:39:06,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:06,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-17 19:39:06,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:07,420 INFO L124 PetriNetUnfolderBase]: 949/2922 cut-off events. [2025-03-17 19:39:07,420 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:07,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4736 conditions, 2922 events. 949/2922 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 23719 event pairs, 800 based on Foata normal form. 442/2977 useless extension candidates. Maximal degree in co-relation 4589. Up to 1807 conditions per place. [2025-03-17 19:39:07,437 INFO L140 encePairwiseOnDemand]: 127/163 looper letters, 69 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-03-17 19:39:07,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 134 transitions, 419 flow [2025-03-17 19:39:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2025-03-17 19:39:07,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5414110429447853 [2025-03-17 19:39:07,447 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 353 transitions. [2025-03-17 19:39:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 134 transitions, 419 flow [2025-03-17 19:39:07,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:07,458 INFO L231 Difference]: Finished difference. Result has 134 places, 134 transitions, 295 flow [2025-03-17 19:39:07,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=134, PETRI_TRANSITIONS=134} [2025-03-17 19:39:07,462 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2025-03-17 19:39:07,462 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 295 flow [2025-03-17 19:39:07,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 19:39:07,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:07,463 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:07,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:39:07,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:07,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -712485838, now seen corresponding path program 1 times [2025-03-17 19:39:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418427993] [2025-03-17 19:39:07,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:07,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:07,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:07,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:07,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418427993] [2025-03-17 19:39:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418427993] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144799295] [2025-03-17 19:39:07,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:07,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:07,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:07,600 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 19:39:07,602 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 19:39:07,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:07,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:07,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:07,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:07,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:07,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:07,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:07,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144799295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:07,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:07,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096280673] [2025-03-17 19:39:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:07,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:07,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:07,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:07,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-17 19:39:07,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 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 19:39:07,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:07,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-17 19:39:07,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:08,157 INFO L124 PetriNetUnfolderBase]: 949/2921 cut-off events. [2025-03-17 19:39:08,158 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:39:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2921 events. 949/2921 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 23705 event pairs, 800 based on Foata normal form. 1/2535 useless extension candidates. Maximal degree in co-relation 4728. Up to 1802 conditions per place. [2025-03-17 19:39:08,171 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 65 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2025-03-17 19:39:08,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 133 transitions, 433 flow [2025-03-17 19:39:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2025-03-17 19:39:08,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4539877300613497 [2025-03-17 19:39:08,176 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 295 flow. Second operand 6 states and 444 transitions. [2025-03-17 19:39:08,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 133 transitions, 433 flow [2025-03-17 19:39:08,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:08,178 INFO L231 Difference]: Finished difference. Result has 137 places, 133 transitions, 301 flow [2025-03-17 19:39:08,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=133} [2025-03-17 19:39:08,180 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2025-03-17 19:39:08,180 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 133 transitions, 301 flow [2025-03-17 19:39:08,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 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 19:39:08,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:08,180 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:08,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:08,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:08,383 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:08,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash -612223822, now seen corresponding path program 1 times [2025-03-17 19:39:08,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839166868] [2025-03-17 19:39:08,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:08,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:08,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:08,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:08,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:08,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:08,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:08,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839166868] [2025-03-17 19:39:08,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839166868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:08,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:08,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040142071] [2025-03-17 19:39:08,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:08,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:08,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:08,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:08,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-17 19:39:08,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 133 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 19:39:08,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:08,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-17 19:39:08,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:08,835 INFO L124 PetriNetUnfolderBase]: 949/2920 cut-off events. [2025-03-17 19:39:08,835 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 19:39:08,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2920 events. 949/2920 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 23665 event pairs, 800 based on Foata normal form. 1/2535 useless extension candidates. Maximal degree in co-relation 4724. Up to 1805 conditions per place. [2025-03-17 19:39:08,846 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 66 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2025-03-17 19:39:08,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 437 flow [2025-03-17 19:39:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2025-03-17 19:39:08,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5214723926380368 [2025-03-17 19:39:08,848 INFO L175 Difference]: Start difference. First operand has 137 places, 133 transitions, 301 flow. Second operand 3 states and 255 transitions. [2025-03-17 19:39:08,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 437 flow [2025-03-17 19:39:08,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 415 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:08,856 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 283 flow [2025-03-17 19:39:08,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2025-03-17 19:39:08,858 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2025-03-17 19:39:08,858 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 283 flow [2025-03-17 19:39:08,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 19:39:08,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:08,859 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:08,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:39:08,859 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:08,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 61417876, now seen corresponding path program 1 times [2025-03-17 19:39:08,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:08,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914806779] [2025-03-17 19:39:08,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:08,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:08,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:08,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:08,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:08,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:08,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914806779] [2025-03-17 19:39:08,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914806779] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745920112] [2025-03-17 19:39:08,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:08,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:08,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:08,939 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 19:39:08,940 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 19:39:08,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:09,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:09,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:09,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:09,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:09,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:09,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745920112] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:09,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:09,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902551339] [2025-03-17 19:39:09,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:09,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:09,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:09,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:09,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:09,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-17 19:39:09,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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 19:39:09,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:09,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-17 19:39:09,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:09,402 INFO L124 PetriNetUnfolderBase]: 949/2924 cut-off events. [2025-03-17 19:39:09,403 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 19:39:09,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 2924 events. 949/2924 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 23683 event pairs, 800 based on Foata normal form. 2/2541 useless extension candidates. Maximal degree in co-relation 4717. Up to 1803 conditions per place. [2025-03-17 19:39:09,416 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2025-03-17 19:39:09,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 444 flow [2025-03-17 19:39:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2025-03-17 19:39:09,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44609991235758106 [2025-03-17 19:39:09,418 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 283 flow. Second operand 7 states and 509 transitions. [2025-03-17 19:39:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 444 flow [2025-03-17 19:39:09,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 430 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:09,424 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 309 flow [2025-03-17 19:39:09,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2025-03-17 19:39:09,425 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2025-03-17 19:39:09,425 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 309 flow [2025-03-17 19:39:09,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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 19:39:09,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:09,425 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:09,433 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 19:39:09,626 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,SelfDestructingSolverStorable3 [2025-03-17 19:39:09,628 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:09,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -267126028, now seen corresponding path program 2 times [2025-03-17 19:39:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672809882] [2025-03-17 19:39:09,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:09,639 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:09,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:09,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:09,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672809882] [2025-03-17 19:39:09,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672809882] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:09,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:09,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750429311] [2025-03-17 19:39:09,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:09,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:09,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:09,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:09,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:09,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 163 [2025-03-17 19:39:09,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 19:39:09,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:09,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 163 [2025-03-17 19:39:09,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:09,977 INFO L124 PetriNetUnfolderBase]: 927/2557 cut-off events. [2025-03-17 19:39:09,977 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 19:39:09,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 2557 events. 927/2557 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 19619 event pairs, 0 based on Foata normal form. 21/2301 useless extension candidates. Maximal degree in co-relation 4319. Up to 1711 conditions per place. [2025-03-17 19:39:09,987 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 114 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2025-03-17 19:39:09,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 176 transitions, 625 flow [2025-03-17 19:39:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2025-03-17 19:39:09,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506134969325154 [2025-03-17 19:39:09,989 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 309 flow. Second operand 4 states and 359 transitions. [2025-03-17 19:39:09,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 176 transitions, 625 flow [2025-03-17 19:39:09,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:09,993 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 311 flow [2025-03-17 19:39:09,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2025-03-17 19:39:09,994 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2025-03-17 19:39:09,994 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 311 flow [2025-03-17 19:39:09,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 19:39:09,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:09,995 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:09,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:39:09,995 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:09,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 623654828, now seen corresponding path program 1 times [2025-03-17 19:39:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:09,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576187486] [2025-03-17 19:39:09,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:09,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:10,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:10,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:10,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:10,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:10,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576187486] [2025-03-17 19:39:10,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576187486] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:10,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801892794] [2025-03-17 19:39:10,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:10,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:10,126 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 19:39:10,128 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 19:39:10,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:10,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:10,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:10,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:10,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:10,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801892794] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:10,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:10,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:10,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067172726] [2025-03-17 19:39:10,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:10,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:10,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:10,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:10,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:10,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-17 19:39:10,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 311 flow. Second operand has 18 states, 18 states have (on average 63.22222222222222) internal successors, (1138), 18 states have internal predecessors, (1138), 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 19:39:10,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:10,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-17 19:39:10,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:10,706 INFO L124 PetriNetUnfolderBase]: 946/2800 cut-off events. [2025-03-17 19:39:10,706 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-03-17 19:39:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 2800 events. 946/2800 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22145 event pairs, 800 based on Foata normal form. 4/2455 useless extension candidates. Maximal degree in co-relation 4593. Up to 1768 conditions per place. [2025-03-17 19:39:10,718 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2025-03-17 19:39:10,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 521 flow [2025-03-17 19:39:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1015 transitions. [2025-03-17 19:39:10,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41513292433537835 [2025-03-17 19:39:10,721 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 311 flow. Second operand 15 states and 1015 transitions. [2025-03-17 19:39:10,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 521 flow [2025-03-17 19:39:10,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:10,724 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 402 flow [2025-03-17 19:39:10,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=402, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2025-03-17 19:39:10,725 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2025-03-17 19:39:10,725 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 402 flow [2025-03-17 19:39:10,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.22222222222222) internal successors, (1138), 18 states have internal predecessors, (1138), 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 19:39:10,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:10,726 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:10,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:10,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:10,933 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:10,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1075000556, now seen corresponding path program 2 times [2025-03-17 19:39:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:10,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94196882] [2025-03-17 19:39:10,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:10,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:10,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:10,973 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:10,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:11,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94196882] [2025-03-17 19:39:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94196882] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775345729] [2025-03-17 19:39:11,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:11,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:11,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:11,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:39:11,253 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:11,279 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:11,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:11,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:11,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 19:39:11,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:11,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775345729] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:11,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-17 19:39:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358960589] [2025-03-17 19:39:11,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:11,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:39:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:11,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:39:11,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:39:11,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-17 19:39:11,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 402 flow. Second operand has 23 states, 23 states have (on average 63.21739130434783) internal successors, (1454), 23 states have internal predecessors, (1454), 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 19:39:11,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:11,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-17 19:39:11,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:11,989 INFO L124 PetriNetUnfolderBase]: 946/2809 cut-off events. [2025-03-17 19:39:11,989 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-03-17 19:39:11,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 2809 events. 946/2809 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22179 event pairs, 800 based on Foata normal form. 3/2463 useless extension candidates. Maximal degree in co-relation 4574. Up to 1768 conditions per place. [2025-03-17 19:39:12,006 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2025-03-17 19:39:12,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 630 flow [2025-03-17 19:39:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:39:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:39:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1392 transitions. [2025-03-17 19:39:12,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.406660823838738 [2025-03-17 19:39:12,010 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 402 flow. Second operand 21 states and 1392 transitions. [2025-03-17 19:39:12,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 630 flow [2025-03-17 19:39:12,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 620 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:12,014 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 503 flow [2025-03-17 19:39:12,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=503, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2025-03-17 19:39:12,016 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2025-03-17 19:39:12,016 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 503 flow [2025-03-17 19:39:12,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 63.21739130434783) internal successors, (1454), 23 states have internal predecessors, (1454), 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 19:39:12,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:12,017 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:12,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:39:12,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:12,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:12,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1916011533, now seen corresponding path program 3 times [2025-03-17 19:39:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773906665] [2025-03-17 19:39:12,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:39:12,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:12,237 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-03-17 19:39:12,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:12,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 19:39:12,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:12,292 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:39:12,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 19:39:12,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:12,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:12,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:12,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:39:12,338 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:39:12,338 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-03-17 19:39:12,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-03-17 19:39:12,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-03-17 19:39:12,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-03-17 19:39:12,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-03-17 19:39:12,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-03-17 19:39:12,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-03-17 19:39:12,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-03-17 19:39:12,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:39:12,341 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-03-17 19:39:12,342 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:39:12,343 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:39:12,370 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:39:12,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 214 transitions, 444 flow [2025-03-17 19:39:12,393 INFO L124 PetriNetUnfolderBase]: 97/421 cut-off events. [2025-03-17 19:39:12,393 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:39:12,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 421 events. 97/421 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2367 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 259. Up to 12 conditions per place. [2025-03-17 19:39:12,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 214 transitions, 444 flow [2025-03-17 19:39:12,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 214 transitions, 444 flow [2025-03-17 19:39:12,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:12,399 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;@41da9126, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:12,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-03-17 19:39:12,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:12,400 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:12,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:12,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:12,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:12,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:39:12,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1053583, now seen corresponding path program 1 times [2025-03-17 19:39:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:12,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700801673] [2025-03-17 19:39:12,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:12,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:12,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:12,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:12,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:12,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:12,432 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 19:39:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700801673] [2025-03-17 19:39:12,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700801673] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:12,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:12,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507917488] [2025-03-17 19:39:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:12,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:12,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:12,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:12,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-17 19:39:12,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 214 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 19:39:12,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:12,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-17 19:39:12,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:16,932 INFO L124 PetriNetUnfolderBase]: 39869/85575 cut-off events. [2025-03-17 19:39:16,932 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-17 19:39:17,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143697 conditions, 85575 events. 39869/85575 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 2462. Compared 978855 event pairs, 34920 based on Foata normal form. 14318/88696 useless extension candidates. Maximal degree in co-relation 107164. Up to 58008 conditions per place. [2025-03-17 19:39:17,374 INFO L140 encePairwiseOnDemand]: 168/214 looper letters, 93 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2025-03-17 19:39:17,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 176 transitions, 560 flow [2025-03-17 19:39:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2025-03-17 19:39:17,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5362149532710281 [2025-03-17 19:39:17,376 INFO L175 Difference]: Start difference. First operand has 169 places, 214 transitions, 444 flow. Second operand 4 states and 459 transitions. [2025-03-17 19:39:17,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 176 transitions, 560 flow [2025-03-17 19:39:17,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 176 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:17,380 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 388 flow [2025-03-17 19:39:17,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2025-03-17 19:39:17,382 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 5 predicate places. [2025-03-17 19:39:17,382 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 388 flow [2025-03-17 19:39:17,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 19:39:17,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:17,383 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:17,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:39:17,383 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:39:17,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:17,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1323406450, now seen corresponding path program 1 times [2025-03-17 19:39:17,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403399429] [2025-03-17 19:39:17,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:17,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:17,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:17,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:17,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403399429] [2025-03-17 19:39:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403399429] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044644825] [2025-03-17 19:39:17,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:17,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:17,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:17,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:39:17,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:17,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:17,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:17,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:17,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:17,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:17,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044644825] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:17,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:17,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:17,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617223629] [2025-03-17 19:39:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:17,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:17,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:17,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:17,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:17,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-17 19:39:17,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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 19:39:17,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:17,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-17 19:39:17,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:22,020 INFO L124 PetriNetUnfolderBase]: 39869/85574 cut-off events. [2025-03-17 19:39:22,020 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2025-03-17 19:39:22,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143707 conditions, 85574 events. 39869/85574 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 978926 event pairs, 34920 based on Foata normal form. 1/74378 useless extension candidates. Maximal degree in co-relation 143688. Up to 58003 conditions per place. [2025-03-17 19:39:22,486 INFO L140 encePairwiseOnDemand]: 209/214 looper letters, 89 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2025-03-17 19:39:22,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 175 transitions, 574 flow [2025-03-17 19:39:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2025-03-17 19:39:22,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4485981308411215 [2025-03-17 19:39:22,488 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 388 flow. Second operand 6 states and 576 transitions. [2025-03-17 19:39:22,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 175 transitions, 574 flow [2025-03-17 19:39:22,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 175 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:22,492 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 394 flow [2025-03-17 19:39:22,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2025-03-17 19:39:22,493 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 8 predicate places. [2025-03-17 19:39:22,493 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 394 flow [2025-03-17 19:39:22,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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 19:39:22,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:22,493 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:22,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:39:22,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 19:39:22,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:39:22,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1924072120, now seen corresponding path program 1 times [2025-03-17 19:39:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048652912] [2025-03-17 19:39:22,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:22,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:22,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:22,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:22,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:22,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048652912] [2025-03-17 19:39:22,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048652912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:22,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:22,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422290833] [2025-03-17 19:39:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:22,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:22,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:22,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:22,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-17 19:39:22,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 19:39:22,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:22,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-17 19:39:22,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:27,178 INFO L124 PetriNetUnfolderBase]: 39869/85573 cut-off events. [2025-03-17 19:39:27,178 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-03-17 19:39:27,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143709 conditions, 85573 events. 39869/85573 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 978580 event pairs, 34920 based on Foata normal form. 1/74378 useless extension candidates. Maximal degree in co-relation 143684. Up to 58006 conditions per place. [2025-03-17 19:39:27,607 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 90 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2025-03-17 19:39:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 578 flow [2025-03-17 19:39:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2025-03-17 19:39:27,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5186915887850467 [2025-03-17 19:39:27,608 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 394 flow. Second operand 3 states and 333 transitions. [2025-03-17 19:39:27,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 578 flow [2025-03-17 19:39:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 556 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:27,611 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 376 flow [2025-03-17 19:39:27,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2025-03-17 19:39:27,612 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 3 predicate places. [2025-03-17 19:39:27,612 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 376 flow [2025-03-17 19:39:27,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 19:39:27,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:27,612 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:27,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:39:27,612 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:39:27,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2095642459, now seen corresponding path program 1 times [2025-03-17 19:39:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490436603] [2025-03-17 19:39:27,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:27,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:27,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:27,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:27,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:27,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490436603] [2025-03-17 19:39:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490436603] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:27,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703732433] [2025-03-17 19:39:27,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:27,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:27,658 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:27,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:39:27,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:27,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:27,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:27,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:27,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:27,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:27,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703732433] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:27,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:27,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905273576] [2025-03-17 19:39:27,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:27,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:27,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:27,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:27,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-17 19:39:27,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 376 flow. Second operand has 10 states, 10 states have (on average 81.3) internal successors, (813), 10 states have internal predecessors, (813), 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 19:39:27,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:27,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-17 19:39:27,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:32,473 INFO L124 PetriNetUnfolderBase]: 39869/85577 cut-off events. [2025-03-17 19:39:32,474 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-17 19:39:32,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143712 conditions, 85577 events. 39869/85577 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 978667 event pairs, 34920 based on Foata normal form. 2/74384 useless extension candidates. Maximal degree in co-relation 143677. Up to 58004 conditions per place. [2025-03-17 19:39:32,903 INFO L140 encePairwiseOnDemand]: 210/214 looper letters, 90 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2025-03-17 19:39:32,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 177 transitions, 585 flow [2025-03-17 19:39:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2025-03-17 19:39:32,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43991989319092123 [2025-03-17 19:39:32,905 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 376 flow. Second operand 7 states and 659 transitions. [2025-03-17 19:39:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 177 transitions, 585 flow [2025-03-17 19:39:32,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 177 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:32,908 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 402 flow [2025-03-17 19:39:32,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2025-03-17 19:39:32,908 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2025-03-17 19:39:32,909 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 402 flow [2025-03-17 19:39:32,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.3) internal successors, (813), 10 states have internal predecessors, (813), 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 19:39:32,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:32,909 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:32,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:33,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:33,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:39:33,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -759246725, now seen corresponding path program 2 times [2025-03-17 19:39:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377712422] [2025-03-17 19:39:33,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:33,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:33,120 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:33,120 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:33,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:33,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377712422] [2025-03-17 19:39:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377712422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:33,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992459549] [2025-03-17 19:39:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:33,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:33,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:33,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:33,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 214 [2025-03-17 19:39:33,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 19:39:33,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:33,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 214 [2025-03-17 19:39:33,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:37,747 INFO L124 PetriNetUnfolderBase]: 41693/85569 cut-off events. [2025-03-17 19:39:37,748 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2025-03-17 19:39:37,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146705 conditions, 85569 events. 41693/85569 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 943327 event pairs, 18140 based on Foata normal form. 21/74843 useless extension candidates. Maximal degree in co-relation 146665. Up to 60939 conditions per place. [2025-03-17 19:39:38,230 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 142 selfloop transitions, 3 changer transitions 0/222 dead transitions. [2025-03-17 19:39:38,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 222 transitions, 782 flow [2025-03-17 19:39:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2025-03-17 19:39:38,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5362149532710281 [2025-03-17 19:39:38,231 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 402 flow. Second operand 4 states and 459 transitions. [2025-03-17 19:39:38,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 222 transitions, 782 flow [2025-03-17 19:39:38,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 222 transitions, 778 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:38,235 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 422 flow [2025-03-17 19:39:38,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=422, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2025-03-17 19:39:38,235 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 12 predicate places. [2025-03-17 19:39:38,235 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 422 flow [2025-03-17 19:39:38,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 19:39:38,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:38,236 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:38,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:39:38,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:39:38,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash 760924018, now seen corresponding path program 1 times [2025-03-17 19:39:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441105617] [2025-03-17 19:39:38,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:38,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:38,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:38,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:38,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:38,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441105617] [2025-03-17 19:39:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441105617] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619378261] [2025-03-17 19:39:38,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:38,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:38,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:38,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:38,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:39:38,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:38,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:38,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:38,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:38,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:38,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:38,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:38,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619378261] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:38,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:38,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201122321] [2025-03-17 19:39:38,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:38,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:38,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:38,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:38,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-17 19:39:38,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 422 flow. Second operand has 18 states, 18 states have (on average 81.27777777777777) internal successors, (1463), 18 states have internal predecessors, (1463), 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 19:39:38,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:38,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-17 19:39:38,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand