./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.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_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:37:44,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:37:44,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:37:44,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:37:44,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:37:44,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:37:44,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:37:44,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:37:44,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:37:44,660 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:37:44,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:37:44,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:37:44,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:37:44,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:37:44,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:37:44,662 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:37:44,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:44,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:37:44,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:37:44,663 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 -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2025-03-17 19:37:44,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:37:44,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:37:44,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:37:44,894 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:37:44,894 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:37:44,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2025-03-17 19:37:46,034 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451d80c36/b5455b6317fe4dad9ee25a6c5d9fbe3b/FLAGb357acde5 [2025-03-17 19:37:46,368 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:37:46,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2025-03-17 19:37:46,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451d80c36/b5455b6317fe4dad9ee25a6c5d9fbe3b/FLAGb357acde5 [2025-03-17 19:37:46,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451d80c36/b5455b6317fe4dad9ee25a6c5d9fbe3b [2025-03-17 19:37:46,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:37:46,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:37:46,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:46,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:37:46,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:37:46,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1a77d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46, skipping insertion in model container [2025-03-17 19:37:46,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,444 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:37:46,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:46,831 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:37:46,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:46,918 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:37:46,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46 WrapperNode [2025-03-17 19:37:46,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:46,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:46,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:37:46,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:37:46,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,952 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2025-03-17 19:37:46,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:46,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:37:46,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:37:46,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:37:46,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,979 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-03-17 19:37:46,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,986 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:37:46,991 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:37:46,991 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:37:46,991 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:37:46,992 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (1/1) ... [2025-03-17 19:37:46,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:47,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:47,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:37:47,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:37:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:37:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:37:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:37:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:37:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:37:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:37:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:37:47,040 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:37:47,156 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:37:47,158 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:37:47,377 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:37:47,377 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:37:47,414 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:37:47,414 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:37:47,573 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:37:47,574 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:37:47,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:47 BoogieIcfgContainer [2025-03-17 19:37:47,574 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:37:47,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:37:47,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:37:47,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:37:47,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:37:46" (1/3) ... [2025-03-17 19:37:47,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73012017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:47, skipping insertion in model container [2025-03-17 19:37:47,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:46" (2/3) ... [2025-03-17 19:37:47,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73012017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:47, skipping insertion in model container [2025-03-17 19:37:47,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:47" (3/3) ... [2025-03-17 19:37:47,581 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2025-03-17 19:37:47,590 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:37:47,591 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_07-cond_racing2.i that has 2 procedures, 58 locations, 1 initial locations, 5 loop locations, and 10 error locations. [2025-03-17 19:37:47,591 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:37:47,628 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:37:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 70 transitions, 147 flow [2025-03-17 19:37:47,696 INFO L124 PetriNetUnfolderBase]: 17/96 cut-off events. [2025-03-17 19:37:47,699 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:37:47,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 17/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 297 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2025-03-17 19:37:47,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 70 transitions, 147 flow [2025-03-17 19:37:47,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 69 transitions, 145 flow [2025-03-17 19:37:47,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:47,727 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;@77a7b6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:47,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-17 19:37:47,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:47,735 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2025-03-17 19:37:47,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:47,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:47,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:47,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-17 19:37:47,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash 422000726, now seen corresponding path program 1 times [2025-03-17 19:37:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:47,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111553661] [2025-03-17 19:37:47,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:47,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:47,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:47,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:47,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:47,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111553661] [2025-03-17 19:37:48,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111553661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:48,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:48,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663684469] [2025-03-17 19:37:48,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:48,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:48,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:48,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:48,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:48,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-03-17 19:37:48,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 69 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:48,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-03-17 19:37:48,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:48,314 INFO L124 PetriNetUnfolderBase]: 171/560 cut-off events. [2025-03-17 19:37:48,315 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:37:48,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 560 events. 171/560 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3107 event pairs, 21 based on Foata normal form. 64/509 useless extension candidates. Maximal degree in co-relation 837. Up to 220 conditions per place. [2025-03-17 19:37:48,325 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 46 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2025-03-17 19:37:48,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 271 flow [2025-03-17 19:37:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-03-17 19:37:48,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2025-03-17 19:37:48,338 INFO L175 Difference]: Start difference. First operand has 61 places, 69 transitions, 145 flow. Second operand 4 states and 199 transitions. [2025-03-17 19:37:48,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 271 flow [2025-03-17 19:37:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 271 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:48,345 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 135 flow [2025-03-17 19:37:48,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2025-03-17 19:37:48,349 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-03-17 19:37:48,349 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 135 flow [2025-03-17 19:37:48,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:48,349 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:48,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:37:48,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-17 19:37:48,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 421955427, now seen corresponding path program 1 times [2025-03-17 19:37:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292876765] [2025-03-17 19:37:48,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:48,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:48,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:48,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:48,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:48,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:48,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292876765] [2025-03-17 19:37:48,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292876765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:48,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:48,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:48,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977693011] [2025-03-17 19:37:48,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:48,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:37:48,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:48,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:37:48,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:37:48,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-03-17 19:37:48,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:48,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-03-17 19:37:48,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:48,506 INFO L124 PetriNetUnfolderBase]: 146/457 cut-off events. [2025-03-17 19:37:48,507 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-17 19:37:48,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 457 events. 146/457 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2402 event pairs, 0 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 727. Up to 256 conditions per place. [2025-03-17 19:37:48,512 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 36 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2025-03-17 19:37:48,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 235 flow [2025-03-17 19:37:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:37:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:37:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2025-03-17 19:37:48,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2025-03-17 19:37:48,515 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 135 flow. Second operand 3 states and 144 transitions. [2025-03-17 19:37:48,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 235 flow [2025-03-17 19:37:48,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 227 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:37:48,518 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 135 flow [2025-03-17 19:37:48,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2025-03-17 19:37:48,520 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-03-17 19:37:48,520 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 135 flow [2025-03-17 19:37:48,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:48,521 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:37:48,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:37:48,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-17 19:37:48,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:48,523 INFO L85 PathProgramCache]: Analyzing trace with hash 197120968, now seen corresponding path program 1 times [2025-03-17 19:37:48,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:48,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920173863] [2025-03-17 19:37:48,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:48,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:37:48,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:37:48,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:48,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:48,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:48,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920173863] [2025-03-17 19:37:48,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920173863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:48,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:48,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195370945] [2025-03-17 19:37:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:48,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:48,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:48,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:48,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:48,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-03-17 19:37:48,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:48,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-03-17 19:37:48,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:48,785 INFO L124 PetriNetUnfolderBase]: 165/511 cut-off events. [2025-03-17 19:37:48,785 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:37:48,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 511 events. 165/511 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2731 event pairs, 62 based on Foata normal form. 12/453 useless extension candidates. Maximal degree in co-relation 843. Up to 279 conditions per place. [2025-03-17 19:37:48,788 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 47 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2025-03-17 19:37:48,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 279 flow [2025-03-17 19:37:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2025-03-17 19:37:48,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2025-03-17 19:37:48,790 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 135 flow. Second operand 4 states and 179 transitions. [2025-03-17 19:37:48,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 279 flow [2025-03-17 19:37:48,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:37:48,792 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 135 flow [2025-03-17 19:37:48,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2025-03-17 19:37:48,792 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-03-17 19:37:48,793 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 135 flow [2025-03-17 19:37:48,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:48,793 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:48,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:37:48,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-17 19:37:48,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash 454703575, now seen corresponding path program 1 times [2025-03-17 19:37:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298723970] [2025-03-17 19:37:48,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:48,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:48,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:48,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:48,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:48,828 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:37:48,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:48,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:48,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:48,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:48,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:37:48,865 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:37:48,865 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2025-03-17 19:37:48,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2025-03-17 19:37:48,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2025-03-17 19:37:48,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2025-03-17 19:37:48,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2025-03-17 19:37:48,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2025-03-17 19:37:48,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2025-03-17 19:37:48,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:37:48,868 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 19:37:48,870 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:37:48,870 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:37:48,891 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:37:48,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 102 transitions, 220 flow [2025-03-17 19:37:48,909 INFO L124 PetriNetUnfolderBase]: 30/173 cut-off events. [2025-03-17 19:37:48,909 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:37:48,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 173 events. 30/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 661 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 104. Up to 9 conditions per place. [2025-03-17 19:37:48,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 102 transitions, 220 flow [2025-03-17 19:37:48,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 102 transitions, 220 flow [2025-03-17 19:37:48,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:48,912 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;@77a7b6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:48,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-03-17 19:37:48,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:48,915 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2025-03-17 19:37:48,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:48,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:48,915 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:48,915 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:48,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash 519368666, now seen corresponding path program 1 times [2025-03-17 19:37:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945143513] [2025-03-17 19:37:48,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:48,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:48,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:48,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:48,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945143513] [2025-03-17 19:37:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945143513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481268191] [2025-03-17 19:37:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:48,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:48,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:48,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:48,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 102 [2025-03-17 19:37:48,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:48,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:48,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 102 [2025-03-17 19:37:48,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:49,790 INFO L124 PetriNetUnfolderBase]: 3972/8883 cut-off events. [2025-03-17 19:37:49,791 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2025-03-17 19:37:49,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14865 conditions, 8883 events. 3972/8883 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 76545 event pairs, 657 based on Foata normal form. 1292/8708 useless extension candidates. Maximal degree in co-relation 10377. Up to 3901 conditions per place. [2025-03-17 19:37:49,838 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 82 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2025-03-17 19:37:49,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 450 flow [2025-03-17 19:37:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2025-03-17 19:37:49,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7475490196078431 [2025-03-17 19:37:49,841 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 220 flow. Second operand 4 states and 305 transitions. [2025-03-17 19:37:49,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 450 flow [2025-03-17 19:37:49,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:49,845 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 198 flow [2025-03-17 19:37:49,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2025-03-17 19:37:49,846 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2025-03-17 19:37:49,846 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 198 flow [2025-03-17 19:37:49,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:49,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:49,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:49,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:37:49,847 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:49,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 519294537, now seen corresponding path program 1 times [2025-03-17 19:37:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391955465] [2025-03-17 19:37:49,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:49,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:49,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:49,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:49,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:49,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:49,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391955465] [2025-03-17 19:37:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391955465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:49,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:49,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234379185] [2025-03-17 19:37:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:49,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:37:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:49,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:37:49,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:37:49,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 102 [2025-03-17 19:37:49,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:49,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:49,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 102 [2025-03-17 19:37:49,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:50,513 INFO L124 PetriNetUnfolderBase]: 4032/8402 cut-off events. [2025-03-17 19:37:50,514 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2025-03-17 19:37:50,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 8402 events. 4032/8402 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 69010 event pairs, 1604 based on Foata normal form. 1/7628 useless extension candidates. Maximal degree in co-relation 1177. Up to 6041 conditions per place. [2025-03-17 19:37:50,602 INFO L140 encePairwiseOnDemand]: 99/102 looper letters, 51 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2025-03-17 19:37:50,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 100 transitions, 332 flow [2025-03-17 19:37:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:37:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:37:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2025-03-17 19:37:50,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2025-03-17 19:37:50,604 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 198 flow. Second operand 3 states and 198 transitions. [2025-03-17 19:37:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 100 transitions, 332 flow [2025-03-17 19:37:50,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:37:50,606 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 202 flow [2025-03-17 19:37:50,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2025-03-17 19:37:50,607 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2025-03-17 19:37:50,607 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 202 flow [2025-03-17 19:37:50,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:50,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:50,607 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:37:50,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:37:50,607 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:50,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1079440086, now seen corresponding path program 1 times [2025-03-17 19:37:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082568592] [2025-03-17 19:37:50,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:50,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:50,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:37:50,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:37:50,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:50,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:50,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082568592] [2025-03-17 19:37:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082568592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:50,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725465854] [2025-03-17 19:37:50,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:50,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:50,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:50,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:50,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 102 [2025-03-17 19:37:50,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:50,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:50,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 102 [2025-03-17 19:37:50,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:51,322 INFO L124 PetriNetUnfolderBase]: 4455/9459 cut-off events. [2025-03-17 19:37:51,323 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2025-03-17 19:37:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16559 conditions, 9459 events. 4455/9459 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 80325 event pairs, 1820 based on Foata normal form. 12/8525 useless extension candidates. Maximal degree in co-relation 1379. Up to 6669 conditions per place. [2025-03-17 19:37:51,366 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 64 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2025-03-17 19:37:51,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 384 flow [2025-03-17 19:37:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2025-03-17 19:37:51,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2025-03-17 19:37:51,368 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 202 flow. Second operand 4 states and 248 transitions. [2025-03-17 19:37:51,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 384 flow [2025-03-17 19:37:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:37:51,370 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 216 flow [2025-03-17 19:37:51,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2025-03-17 19:37:51,371 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2025-03-17 19:37:51,371 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 216 flow [2025-03-17 19:37:51,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:51,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:51,371 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:51,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:37:51,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:51,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 379744600, now seen corresponding path program 1 times [2025-03-17 19:37:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609212132] [2025-03-17 19:37:51,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:51,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:37:51,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:37:51,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:51,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609212132] [2025-03-17 19:37:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609212132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:51,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:51,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:51,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643264816] [2025-03-17 19:37:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:51,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:51,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:51,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:51,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:51,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 102 [2025-03-17 19:37:51,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 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 19:37:51,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:51,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 102 [2025-03-17 19:37:51,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:52,362 INFO L124 PetriNetUnfolderBase]: 6297/12866 cut-off events. [2025-03-17 19:37:52,362 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2025-03-17 19:37:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22965 conditions, 12866 events. 6297/12866 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 112132 event pairs, 1495 based on Foata normal form. 222/11741 useless extension candidates. Maximal degree in co-relation 22851. Up to 6450 conditions per place. [2025-03-17 19:37:52,422 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 122 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2025-03-17 19:37:52,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 180 transitions, 710 flow [2025-03-17 19:37:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2025-03-17 19:37:52,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2025-03-17 19:37:52,424 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 216 flow. Second operand 5 states and 365 transitions. [2025-03-17 19:37:52,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 180 transitions, 710 flow [2025-03-17 19:37:52,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 180 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:37:52,427 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 306 flow [2025-03-17 19:37:52,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2025-03-17 19:37:52,428 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2025-03-17 19:37:52,428 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 306 flow [2025-03-17 19:37:52,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 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 19:37:52,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:52,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:52,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:37:52,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:52,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2108441683, now seen corresponding path program 1 times [2025-03-17 19:37:52,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:52,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008884526] [2025-03-17 19:37:52,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:52,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:52,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:37:52,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:37:52,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:52,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:52,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008884526] [2025-03-17 19:37:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008884526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:52,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:37:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070704603] [2025-03-17 19:37:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:52,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:37:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:52,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:37:52,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:37:52,492 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 102 [2025-03-17 19:37:52,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:52,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:52,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 102 [2025-03-17 19:37:52,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:53,240 INFO L124 PetriNetUnfolderBase]: 6289/13040 cut-off events. [2025-03-17 19:37:53,240 INFO L125 PetriNetUnfolderBase]: For 4101/4111 co-relation queries the response was YES. [2025-03-17 19:37:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26196 conditions, 13040 events. 6289/13040 cut-off events. For 4101/4111 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 112912 event pairs, 4670 based on Foata normal form. 168/12272 useless extension candidates. Maximal degree in co-relation 26079. Up to 8803 conditions per place. [2025-03-17 19:37:53,301 INFO L140 encePairwiseOnDemand]: 99/102 looper letters, 85 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2025-03-17 19:37:53,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 130 transitions, 588 flow [2025-03-17 19:37:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:37:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:37:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2025-03-17 19:37:53,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2025-03-17 19:37:53,302 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 306 flow. Second operand 3 states and 196 transitions. [2025-03-17 19:37:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 130 transitions, 588 flow [2025-03-17 19:37:53,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 130 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:53,309 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 308 flow [2025-03-17 19:37:53,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2025-03-17 19:37:53,310 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2025-03-17 19:37:53,310 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 308 flow [2025-03-17 19:37:53,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:53,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:53,311 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:37:53,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:37:53,311 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:53,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 939510975, now seen corresponding path program 1 times [2025-03-17 19:37:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:53,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391113992] [2025-03-17 19:37:53,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:53,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:37:53,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:37:53,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:53,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:53,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391113992] [2025-03-17 19:37:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391113992] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:53,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:53,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406797760] [2025-03-17 19:37:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:53,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:53,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:53,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:53,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 102 [2025-03-17 19:37:53,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:53,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:53,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 102 [2025-03-17 19:37:53,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:54,195 INFO L124 PetriNetUnfolderBase]: 5326/11834 cut-off events. [2025-03-17 19:37:54,196 INFO L125 PetriNetUnfolderBase]: For 3679/3679 co-relation queries the response was YES. [2025-03-17 19:37:54,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23482 conditions, 11834 events. 5326/11834 cut-off events. For 3679/3679 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 106074 event pairs, 607 based on Foata normal form. 160/10953 useless extension candidates. Maximal degree in co-relation 20960. Up to 7025 conditions per place. [2025-03-17 19:37:54,268 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 103 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2025-03-17 19:37:54,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 153 transitions, 696 flow [2025-03-17 19:37:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2025-03-17 19:37:54,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6544117647058824 [2025-03-17 19:37:54,272 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 308 flow. Second operand 4 states and 267 transitions. [2025-03-17 19:37:54,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 153 transitions, 696 flow [2025-03-17 19:37:54,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 153 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:37:54,301 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 318 flow [2025-03-17 19:37:54,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2025-03-17 19:37:54,303 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2025-03-17 19:37:54,303 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 318 flow [2025-03-17 19:37:54,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:54,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:54,304 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:54,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:37:54,304 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:54,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 937183195, now seen corresponding path program 1 times [2025-03-17 19:37:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505764685] [2025-03-17 19:37:54,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:54,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:37:54,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:37:54,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:54,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:54,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:54,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505764685] [2025-03-17 19:37:54,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505764685] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:54,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:54,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:54,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933040082] [2025-03-17 19:37:54,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:54,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:37:54,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:54,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:37:54,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:37:54,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 102 [2025-03-17 19:37:54,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:54,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:54,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 102 [2025-03-17 19:37:54,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:55,538 INFO L124 PetriNetUnfolderBase]: 10674/21953 cut-off events. [2025-03-17 19:37:55,539 INFO L125 PetriNetUnfolderBase]: For 7233/7243 co-relation queries the response was YES. [2025-03-17 19:37:55,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44216 conditions, 21953 events. 10674/21953 cut-off events. For 7233/7243 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 205285 event pairs, 5168 based on Foata normal form. 176/20694 useless extension candidates. Maximal degree in co-relation 35986. Up to 9160 conditions per place. [2025-03-17 19:37:55,663 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 99 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2025-03-17 19:37:55,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 145 transitions, 682 flow [2025-03-17 19:37:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:37:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:37:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2025-03-17 19:37:55,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6830065359477124 [2025-03-17 19:37:55,665 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 318 flow. Second operand 3 states and 209 transitions. [2025-03-17 19:37:55,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 145 transitions, 682 flow [2025-03-17 19:37:55,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:37:55,673 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 340 flow [2025-03-17 19:37:55,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2025-03-17 19:37:55,674 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 15 predicate places. [2025-03-17 19:37:55,674 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 340 flow [2025-03-17 19:37:55,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:55,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:55,674 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:55,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:37:55,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:55,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1012694329, now seen corresponding path program 1 times [2025-03-17 19:37:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:55,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106810625] [2025-03-17 19:37:55,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:55,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:37:55,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:37:55,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:55,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:55,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:55,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106810625] [2025-03-17 19:37:55,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106810625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:55,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:55,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:55,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541764048] [2025-03-17 19:37:55,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:55,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:37:55,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:55,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:37:55,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:37:55,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 102 [2025-03-17 19:37:55,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:55,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:55,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 102 [2025-03-17 19:37:55,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:56,759 INFO L124 PetriNetUnfolderBase]: 9345/19891 cut-off events. [2025-03-17 19:37:56,759 INFO L125 PetriNetUnfolderBase]: For 7507/7519 co-relation queries the response was YES. [2025-03-17 19:37:56,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41796 conditions, 19891 events. 9345/19891 cut-off events. For 7507/7519 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 187582 event pairs, 1218 based on Foata normal form. 12/19476 useless extension candidates. Maximal degree in co-relation 34563. Up to 13221 conditions per place. [2025-03-17 19:37:56,894 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 102 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2025-03-17 19:37:56,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 152 transitions, 706 flow [2025-03-17 19:37:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2025-03-17 19:37:56,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2025-03-17 19:37:56,896 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 340 flow. Second operand 5 states and 315 transitions. [2025-03-17 19:37:56,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 152 transitions, 706 flow [2025-03-17 19:37:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 152 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:37:56,951 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 344 flow [2025-03-17 19:37:56,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2025-03-17 19:37:56,952 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 18 predicate places. [2025-03-17 19:37:56,952 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 344 flow [2025-03-17 19:37:56,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:56,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:56,952 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 19:37:56,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:37:56,953 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:37:56,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash 926932460, now seen corresponding path program 1 times [2025-03-17 19:37:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350614433] [2025-03-17 19:37:56,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:56,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:37:56,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:37:56,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:56,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:56,977 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:37:56,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:37:56,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:37:56,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:56,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:56,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:37:56,997 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2025-03-17 19:37:56,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2025-03-17 19:37:56,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2025-03-17 19:37:56,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:37:56,998 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:56,999 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:37:57,000 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:37:57,024 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:37:57,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 134 transitions, 295 flow [2025-03-17 19:37:57,043 INFO L124 PetriNetUnfolderBase]: 46/269 cut-off events. [2025-03-17 19:37:57,043 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:37:57,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 269 events. 46/269 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1117 event pairs, 1 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 188. Up to 12 conditions per place. [2025-03-17 19:37:57,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 134 transitions, 295 flow [2025-03-17 19:37:57,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 134 transitions, 295 flow [2025-03-17 19:37:57,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:57,047 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;@77a7b6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:57,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-03-17 19:37:57,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:57,049 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2025-03-17 19:37:57,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:57,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:57,049 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:57,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:37:57,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:57,050 INFO L85 PathProgramCache]: Analyzing trace with hash 647274366, now seen corresponding path program 1 times [2025-03-17 19:37:57,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:57,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167242346] [2025-03-17 19:37:57,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:57,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:57,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:57,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:57,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:57,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:57,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167242346] [2025-03-17 19:37:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167242346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980050416] [2025-03-17 19:37:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:57,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:57,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:57,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:57,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 134 [2025-03-17 19:37:57,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 134 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:57,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:57,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 134 [2025-03-17 19:37:57,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:04,185 INFO L124 PetriNetUnfolderBase]: 71949/130376 cut-off events. [2025-03-17 19:38:04,185 INFO L125 PetriNetUnfolderBase]: For 1563/1563 co-relation queries the response was YES. [2025-03-17 19:38:04,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227473 conditions, 130376 events. 71949/130376 cut-off events. For 1563/1563 co-relation queries the response was YES. Maximal size of possible extension queue 2918. Compared 1365377 event pairs, 13366 based on Foata normal form. 21984/134544 useless extension candidates. Maximal degree in co-relation 87622. Up to 63142 conditions per place. [2025-03-17 19:38:04,880 INFO L140 encePairwiseOnDemand]: 109/134 looper letters, 117 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2025-03-17 19:38:04,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 179 transitions, 627 flow [2025-03-17 19:38:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2025-03-17 19:38:04,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7649253731343284 [2025-03-17 19:38:04,882 INFO L175 Difference]: Start difference. First operand has 115 places, 134 transitions, 295 flow. Second operand 4 states and 410 transitions. [2025-03-17 19:38:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 179 transitions, 627 flow [2025-03-17 19:38:04,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 179 transitions, 627 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:04,884 INFO L231 Difference]: Finished difference. Result has 117 places, 113 transitions, 261 flow [2025-03-17 19:38:04,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2025-03-17 19:38:04,885 INFO L279 CegarLoopForPetriNet]: 115 programPoint places, 2 predicate places. [2025-03-17 19:38:04,885 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 261 flow [2025-03-17 19:38:04,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:04,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:04,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:38:04,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:38:04,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:38:04,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 647171407, now seen corresponding path program 1 times [2025-03-17 19:38:04,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:04,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421569450] [2025-03-17 19:38:04,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:04,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:38:04,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:38:04,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:04,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:04,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421569450] [2025-03-17 19:38:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421569450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:04,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:04,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:04,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330352320] [2025-03-17 19:38:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:04,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:38:04,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:04,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:38:04,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:38:04,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 134 [2025-03-17 19:38:04,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:04,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:04,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 134 [2025-03-17 19:38:04,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:12,288 INFO L124 PetriNetUnfolderBase]: 73746/126856 cut-off events. [2025-03-17 19:38:12,288 INFO L125 PetriNetUnfolderBase]: For 5281/5281 co-relation queries the response was YES. [2025-03-17 19:38:12,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231368 conditions, 126856 events. 73746/126856 cut-off events. For 5281/5281 co-relation queries the response was YES. Maximal size of possible extension queue 3096. Compared 1257268 event pairs, 47116 based on Foata normal form. 1/116719 useless extension candidates. Maximal degree in co-relation 28844. Up to 99558 conditions per place. [2025-03-17 19:38:12,942 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 64 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2025-03-17 19:38:12,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 126 transitions, 421 flow [2025-03-17 19:38:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:38:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:38:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2025-03-17 19:38:12,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6218905472636815 [2025-03-17 19:38:12,944 INFO L175 Difference]: Start difference. First operand has 117 places, 113 transitions, 261 flow. Second operand 3 states and 250 transitions. [2025-03-17 19:38:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 126 transitions, 421 flow [2025-03-17 19:38:12,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 126 transitions, 411 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:38:12,948 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 265 flow [2025-03-17 19:38:12,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2025-03-17 19:38:12,949 INFO L279 CegarLoopForPetriNet]: 115 programPoint places, 2 predicate places. [2025-03-17 19:38:12,949 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 265 flow [2025-03-17 19:38:12,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:12,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:12,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:38:12,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:38:12,949 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:38:12,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1409330548, now seen corresponding path program 1 times [2025-03-17 19:38:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:12,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563522505] [2025-03-17 19:38:12,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:12,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:38:12,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:38:12,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:12,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563522505] [2025-03-17 19:38:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563522505] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:13,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187528997] [2025-03-17 19:38:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:13,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:13,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:13,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:13,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:13,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 134 [2025-03-17 19:38:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 134 [2025-03-17 19:38:13,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:21,056 INFO L124 PetriNetUnfolderBase]: 82835/146014 cut-off events. [2025-03-17 19:38:21,056 INFO L125 PetriNetUnfolderBase]: For 5523/5523 co-relation queries the response was YES. [2025-03-17 19:38:21,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263032 conditions, 146014 events. 82835/146014 cut-off events. For 5523/5523 co-relation queries the response was YES. Maximal size of possible extension queue 3482. Compared 1506557 event pairs, 49168 based on Foata normal form. 12/134480 useless extension candidates. Maximal degree in co-relation 21928. Up to 112073 conditions per place. [2025-03-17 19:38:22,020 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 77 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2025-03-17 19:38:22,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 473 flow [2025-03-17 19:38:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2025-03-17 19:38:22,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5839552238805971 [2025-03-17 19:38:22,022 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 265 flow. Second operand 4 states and 313 transitions. [2025-03-17 19:38:22,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 473 flow [2025-03-17 19:38:22,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:38:22,025 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 279 flow [2025-03-17 19:38:22,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2025-03-17 19:38:22,026 INFO L279 CegarLoopForPetriNet]: 115 programPoint places, 6 predicate places. [2025-03-17 19:38:22,026 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 279 flow [2025-03-17 19:38:22,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:22,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:22,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:22,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:38:22,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:38:22,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1273304828, now seen corresponding path program 1 times [2025-03-17 19:38:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:22,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753122645] [2025-03-17 19:38:22,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:22,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:22,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:38:22,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:38:22,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:22,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753122645] [2025-03-17 19:38:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753122645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695918505] [2025-03-17 19:38:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:22,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:22,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:22,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:22,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 134 [2025-03-17 19:38:22,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:22,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:22,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 134 [2025-03-17 19:38:22,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand