./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longer-1.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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:24:33,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:24:33,431 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:24:33,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:24:33,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:24:33,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:24:33,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:24:33,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:24:33,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:24:33,456 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:24:33,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:24:33,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:24:33,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:24:33,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:24:33,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:24:33,458 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:24:33,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:24:33,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:24:33,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:24:33,459 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 -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2025-03-17 19:24:33,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:24:33,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:24:33,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:24:33,689 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:24:33,690 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:24:33,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-1.i [2025-03-17 19:24:34,782 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704ad781a/d986a86892324d109d98740cab8c47b8/FLAG7b2447d74 [2025-03-17 19:24:35,045 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:24:35,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2025-03-17 19:24:35,060 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704ad781a/d986a86892324d109d98740cab8c47b8/FLAG7b2447d74 [2025-03-17 19:24:35,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704ad781a/d986a86892324d109d98740cab8c47b8 [2025-03-17 19:24:35,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:24:35,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:24:35,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:24:35,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:24:35,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:24:35,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137c8116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35, skipping insertion in model container [2025-03-17 19:24:35,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:24:35,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:24:35,722 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:24:35,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:24:35,822 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:24:35,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35 WrapperNode [2025-03-17 19:24:35,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:24:35,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:24:35,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:24:35,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:24:35,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,879 INFO L138 Inliner]: procedures = 277, calls = 432, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 558 [2025-03-17 19:24:35,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:24:35,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:24:35,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:24:35,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:24:35,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,922 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 402, 5]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 400, 5]. The 1 writes are split as follows [0, 1, 0]. [2025-03-17 19:24:35,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,938 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:24:35,945 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:24:35,945 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:24:35,945 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:24:35,946 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (1/1) ... [2025-03-17 19:24:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:24:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:35,977 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 19:24:35,979 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 19:24:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 19:24:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 19:24:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:24:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:24:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:24:35,996 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 19:24:36,090 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:24:36,091 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:24:36,699 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L982: havoc pop_#t~mem38#1; [2025-03-17 19:24:36,700 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L982-1: havoc pop_#t~ret37#1; [2025-03-17 19:24:36,700 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L984-1: pop_#res#1 := 0; [2025-03-17 19:24:36,701 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:24:36,701 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:24:39,915 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:24:39,916 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:24:39,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:24:39 BoogieIcfgContainer [2025-03-17 19:24:39,916 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:24:39,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:24:39,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:24:39,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:24:39,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:24:35" (1/3) ... [2025-03-17 19:24:39,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400e6b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:24:39, skipping insertion in model container [2025-03-17 19:24:39,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:35" (2/3) ... [2025-03-17 19:24:39,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400e6b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:24:39, skipping insertion in model container [2025-03-17 19:24:39,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:24:39" (3/3) ... [2025-03-17 19:24:39,925 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2025-03-17 19:24:39,936 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:24:39,939 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-1.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-17 19:24:39,939 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:24:39,999 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:24:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-03-17 19:24:40,073 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-03-17 19:24:40,077 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:24:40,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-03-17 19:24:40,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-03-17 19:24:40,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-03-17 19:24:40,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:24:40,104 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;@20f37c44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:24:40,105 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-17 19:24:40,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:24:40,125 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2025-03-17 19:24:40,125 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:24:40,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:40,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:40,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:40,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -623204121, now seen corresponding path program 1 times [2025-03-17 19:24:40,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:40,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248242600] [2025-03-17 19:24:40,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:40,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:24:40,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:24:40,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:40,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:40,676 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 19:24:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:40,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248242600] [2025-03-17 19:24:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248242600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:24:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40063520] [2025-03-17 19:24:40,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:40,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:40,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:40,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:40,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:40,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:24:40,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:40,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:40,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:24:40,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:41,063 INFO L124 PetriNetUnfolderBase]: 713/1402 cut-off events. [2025-03-17 19:24:41,064 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-03-17 19:24:41,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 1402 events. 713/1402 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7687 event pairs, 148 based on Foata normal form. 40/1279 useless extension candidates. Maximal degree in co-relation 2471. Up to 781 conditions per place. [2025-03-17 19:24:41,080 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2025-03-17 19:24:41,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2025-03-17 19:24:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:24:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:24:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2025-03-17 19:24:41,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-17 19:24:41,094 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2025-03-17 19:24:41,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2025-03-17 19:24:41,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:41,102 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2025-03-17 19:24:41,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2025-03-17 19:24:41,107 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-03-17 19:24:41,108 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2025-03-17 19:24:41,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:41,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:41,108 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:41,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:24:41,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:41,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1066773277, now seen corresponding path program 1 times [2025-03-17 19:24:41,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:41,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037981116] [2025-03-17 19:24:41,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:41,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:41,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:24:41,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:24:41,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:41,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:41,291 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 19:24:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037981116] [2025-03-17 19:24:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037981116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:41,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:24:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848522976] [2025-03-17 19:24:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:41,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:41,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:41,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:41,299 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:24:41,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:41,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:41,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:24:41,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:41,566 INFO L124 PetriNetUnfolderBase]: 751/1504 cut-off events. [2025-03-17 19:24:41,567 INFO L125 PetriNetUnfolderBase]: For 343/347 co-relation queries the response was YES. [2025-03-17 19:24:41,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3183 conditions, 1504 events. 751/1504 cut-off events. For 343/347 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8360 event pairs, 200 based on Foata normal form. 64/1437 useless extension candidates. Maximal degree in co-relation 2805. Up to 839 conditions per place. [2025-03-17 19:24:41,577 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2025-03-17 19:24:41,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2025-03-17 19:24:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:24:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:24:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2025-03-17 19:24:41,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-17 19:24:41,579 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2025-03-17 19:24:41,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2025-03-17 19:24:41,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:24:41,583 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2025-03-17 19:24:41,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2025-03-17 19:24:41,584 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-17 19:24:41,584 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2025-03-17 19:24:41,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:41,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:41,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:41,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:24:41,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:41,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1289737178, now seen corresponding path program 1 times [2025-03-17 19:24:41,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:41,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837915012] [2025-03-17 19:24:41,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:41,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:41,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:24:41,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:24:41,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:41,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:41,705 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 19:24:41,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837915012] [2025-03-17 19:24:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837915012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:41,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983772974] [2025-03-17 19:24:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:41,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:41,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:41,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:41,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:24:41,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:41,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:41,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:24:41,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:42,040 INFO L124 PetriNetUnfolderBase]: 1260/2472 cut-off events. [2025-03-17 19:24:42,041 INFO L125 PetriNetUnfolderBase]: For 1158/1166 co-relation queries the response was YES. [2025-03-17 19:24:42,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 2472 events. 1260/2472 cut-off events. For 1158/1166 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14929 event pairs, 538 based on Foata normal form. 68/2402 useless extension candidates. Maximal degree in co-relation 5220. Up to 1246 conditions per place. [2025-03-17 19:24:42,055 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2025-03-17 19:24:42,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2025-03-17 19:24:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-03-17 19:24:42,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-03-17 19:24:42,057 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2025-03-17 19:24:42,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2025-03-17 19:24:42,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:24:42,065 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2025-03-17 19:24:42,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2025-03-17 19:24:42,065 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2025-03-17 19:24:42,066 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2025-03-17 19:24:42,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:42,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:42,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:42,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:24:42,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:42,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1471603909, now seen corresponding path program 1 times [2025-03-17 19:24:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:42,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085286150] [2025-03-17 19:24:42,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:42,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:24:42,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:24:42,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:42,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:42,197 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 19:24:42,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:42,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085286150] [2025-03-17 19:24:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085286150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:42,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:42,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:42,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838184456] [2025-03-17 19:24:42,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:42,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:42,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:42,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:42,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:24:42,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:42,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:42,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:24:42,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:42,590 INFO L124 PetriNetUnfolderBase]: 1711/3266 cut-off events. [2025-03-17 19:24:42,591 INFO L125 PetriNetUnfolderBase]: For 1953/2121 co-relation queries the response was YES. [2025-03-17 19:24:42,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 3266 events. 1711/3266 cut-off events. For 1953/2121 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20254 event pairs, 635 based on Foata normal form. 106/3253 useless extension candidates. Maximal degree in co-relation 7143. Up to 1454 conditions per place. [2025-03-17 19:24:42,606 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2025-03-17 19:24:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2025-03-17 19:24:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-17 19:24:42,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-17 19:24:42,608 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2025-03-17 19:24:42,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2025-03-17 19:24:42,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:24:42,615 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2025-03-17 19:24:42,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2025-03-17 19:24:42,616 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2025-03-17 19:24:42,616 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2025-03-17 19:24:42,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:42,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:42,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:42,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:24:42,616 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:42,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash 784204231, now seen corresponding path program 1 times [2025-03-17 19:24:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:42,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41170025] [2025-03-17 19:24:42,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:42,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:42,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:24:42,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:24:42,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:42,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:42,774 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 19:24:42,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41170025] [2025-03-17 19:24:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41170025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:42,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388965030] [2025-03-17 19:24:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:42,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:24:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:42,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:24:42,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:24:42,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-03-17 19:24:42,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:42,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:42,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-03-17 19:24:42,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:42,937 INFO L124 PetriNetUnfolderBase]: 823/1821 cut-off events. [2025-03-17 19:24:42,938 INFO L125 PetriNetUnfolderBase]: For 1162/1238 co-relation queries the response was YES. [2025-03-17 19:24:42,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 1821 events. 823/1821 cut-off events. For 1162/1238 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10608 event pairs, 210 based on Foata normal form. 92/1877 useless extension candidates. Maximal degree in co-relation 4327. Up to 954 conditions per place. [2025-03-17 19:24:42,948 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2025-03-17 19:24:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2025-03-17 19:24:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:24:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:24:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-03-17 19:24:42,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-17 19:24:42,951 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2025-03-17 19:24:42,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2025-03-17 19:24:42,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:42,959 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2025-03-17 19:24:42,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2025-03-17 19:24:42,960 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-03-17 19:24:42,961 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2025-03-17 19:24:42,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:42,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:42,961 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:42,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:24:42,961 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:42,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash -25070984, now seen corresponding path program 1 times [2025-03-17 19:24:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848144966] [2025-03-17 19:24:42,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:42,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:24:42,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:24:42,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:42,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:43,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848144966] [2025-03-17 19:24:43,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848144966] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:43,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257352309] [2025-03-17 19:24:43,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:43,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:43,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:43,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:43,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:24:43,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:24:43,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:24:43,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:43,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:43,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:24:43,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:43,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:24:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257352309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:43,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:24:43,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:24:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186233551] [2025-03-17 19:24:43,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:24:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:43,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:24:43,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:24:43,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:24:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:43,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:43,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:24:43,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:43,618 INFO L124 PetriNetUnfolderBase]: 1303/2766 cut-off events. [2025-03-17 19:24:43,618 INFO L125 PetriNetUnfolderBase]: For 1374/1484 co-relation queries the response was YES. [2025-03-17 19:24:43,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 2766 events. 1303/2766 cut-off events. For 1374/1484 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16935 event pairs, 274 based on Foata normal form. 18/2727 useless extension candidates. Maximal degree in co-relation 5596. Up to 906 conditions per place. [2025-03-17 19:24:43,634 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2025-03-17 19:24:43,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2025-03-17 19:24:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:24:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:24:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2025-03-17 19:24:43,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-03-17 19:24:43,635 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2025-03-17 19:24:43,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2025-03-17 19:24:43,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:24:43,642 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2025-03-17 19:24:43,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2025-03-17 19:24:43,643 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2025-03-17 19:24:43,644 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2025-03-17 19:24:43,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:43,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:43,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:43,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:24:43,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 19:24:43,848 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:43,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2043939218, now seen corresponding path program 1 times [2025-03-17 19:24:43,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:43,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102828131] [2025-03-17 19:24:43,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:43,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:43,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:43,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:43,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:43,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:43,992 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 19:24:43,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102828131] [2025-03-17 19:24:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102828131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:43,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:43,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:24:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679258727] [2025-03-17 19:24:43,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:43,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:24:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:43,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:24:43,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:24:44,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:44,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:44,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:44,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:44,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:44,373 INFO L124 PetriNetUnfolderBase]: 1825/3756 cut-off events. [2025-03-17 19:24:44,373 INFO L125 PetriNetUnfolderBase]: For 2955/3131 co-relation queries the response was YES. [2025-03-17 19:24:44,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9770 conditions, 3756 events. 1825/3756 cut-off events. For 2955/3131 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 24083 event pairs, 352 based on Foata normal form. 26/3763 useless extension candidates. Maximal degree in co-relation 7957. Up to 1716 conditions per place. [2025-03-17 19:24:44,400 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2025-03-17 19:24:44,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2025-03-17 19:24:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:24:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:24:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-03-17 19:24:44,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2025-03-17 19:24:44,401 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2025-03-17 19:24:44,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2025-03-17 19:24:44,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:44,410 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2025-03-17 19:24:44,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2025-03-17 19:24:44,411 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2025-03-17 19:24:44,411 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2025-03-17 19:24:44,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:44,411 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:44,411 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:44,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:24:44,412 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:44,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:44,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1774964116, now seen corresponding path program 1 times [2025-03-17 19:24:44,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261225732] [2025-03-17 19:24:44,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:44,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:44,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:44,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:44,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:44,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:44,610 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 19:24:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261225732] [2025-03-17 19:24:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261225732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:24:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923929986] [2025-03-17 19:24:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:44,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:24:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:44,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:24:44,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:24:44,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:44,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:44,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:44,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:44,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:45,012 INFO L124 PetriNetUnfolderBase]: 2302/4732 cut-off events. [2025-03-17 19:24:45,012 INFO L125 PetriNetUnfolderBase]: For 4949/5189 co-relation queries the response was YES. [2025-03-17 19:24:45,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12823 conditions, 4732 events. 2302/4732 cut-off events. For 4949/5189 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 32145 event pairs, 537 based on Foata normal form. 24/4733 useless extension candidates. Maximal degree in co-relation 9576. Up to 2363 conditions per place. [2025-03-17 19:24:45,039 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2025-03-17 19:24:45,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2025-03-17 19:24:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:24:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:24:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2025-03-17 19:24:45,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2025-03-17 19:24:45,041 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2025-03-17 19:24:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2025-03-17 19:24:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:45,051 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2025-03-17 19:24:45,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-03-17 19:24:45,052 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2025-03-17 19:24:45,052 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2025-03-17 19:24:45,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:45,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:45,052 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:45,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:24:45,053 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:45,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -777199346, now seen corresponding path program 1 times [2025-03-17 19:24:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622587563] [2025-03-17 19:24:45,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:45,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:45,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:45,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:45,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622587563] [2025-03-17 19:24:45,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622587563] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187034625] [2025-03-17 19:24:45,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:45,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:45,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:45,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:24:45,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:45,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:45,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:45,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:45,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:24:45,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:45,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:24:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:45,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187034625] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:24:45,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:24:45,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:24:45,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106305687] [2025-03-17 19:24:45,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:24:45,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:24:45,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:45,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:24:45,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:24:45,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:24:45,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:45,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:45,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:24:45,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:46,056 INFO L124 PetriNetUnfolderBase]: 3142/6670 cut-off events. [2025-03-17 19:24:46,056 INFO L125 PetriNetUnfolderBase]: For 10717/11073 co-relation queries the response was YES. [2025-03-17 19:24:46,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18710 conditions, 6670 events. 3142/6670 cut-off events. For 10717/11073 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 47691 event pairs, 789 based on Foata normal form. 90/6729 useless extension candidates. Maximal degree in co-relation 15109. Up to 2350 conditions per place. [2025-03-17 19:24:46,098 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/208 dead transitions. [2025-03-17 19:24:46,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 208 transitions, 1390 flow [2025-03-17 19:24:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 19:24:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 19:24:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2025-03-17 19:24:46,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2025-03-17 19:24:46,100 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 11 states and 335 transitions. [2025-03-17 19:24:46,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 208 transitions, 1390 flow [2025-03-17 19:24:46,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 208 transitions, 1370 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-17 19:24:46,121 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 592 flow [2025-03-17 19:24:46,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=592, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2025-03-17 19:24:46,122 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2025-03-17 19:24:46,122 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 592 flow [2025-03-17 19:24:46,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:46,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:46,122 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:46,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:24:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-17 19:24:46,323 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:46,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1277502993, now seen corresponding path program 1 times [2025-03-17 19:24:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574737051] [2025-03-17 19:24:46,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:46,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:46,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:46,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:46,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:46,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574737051] [2025-03-17 19:24:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574737051] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693443164] [2025-03-17 19:24:46,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:46,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:46,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:46,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:46,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:24:46,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:46,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:46,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:46,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:46,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:24:46,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:46,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:24:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693443164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:46,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:24:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-17 19:24:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854216974] [2025-03-17 19:24:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:46,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:24:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:46,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:24:46,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:24:46,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-17 19:24:46,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 592 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:46,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:46,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-17 19:24:46,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:47,155 INFO L124 PetriNetUnfolderBase]: 3888/7637 cut-off events. [2025-03-17 19:24:47,155 INFO L125 PetriNetUnfolderBase]: For 16069/16305 co-relation queries the response was YES. [2025-03-17 19:24:47,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22274 conditions, 7637 events. 3888/7637 cut-off events. For 16069/16305 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 53155 event pairs, 644 based on Foata normal form. 187/7612 useless extension candidates. Maximal degree in co-relation 18954. Up to 3751 conditions per place. [2025-03-17 19:24:47,198 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 116 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2025-03-17 19:24:47,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 1390 flow [2025-03-17 19:24:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-17 19:24:47,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-17 19:24:47,200 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 592 flow. Second operand 4 states and 117 transitions. [2025-03-17 19:24:47,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 1390 flow [2025-03-17 19:24:47,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1347 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:47,223 INFO L231 Difference]: Finished difference. Result has 95 places, 77 transitions, 581 flow [2025-03-17 19:24:47,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=581, PETRI_PLACES=95, PETRI_TRANSITIONS=77} [2025-03-17 19:24:47,224 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2025-03-17 19:24:47,224 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 77 transitions, 581 flow [2025-03-17 19:24:47,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:47,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:47,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:47,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:24:47,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:47,425 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:47,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2082201147, now seen corresponding path program 1 times [2025-03-17 19:24:47,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:47,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232808046] [2025-03-17 19:24:47,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:47,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:47,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:24:47,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:24:47,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:47,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:47,541 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 19:24:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232808046] [2025-03-17 19:24:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232808046] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:24:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260631890] [2025-03-17 19:24:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:47,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:24:47,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:47,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:24:47,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:24:47,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:47,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 77 transitions, 581 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:47,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:47,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:47,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:48,081 INFO L124 PetriNetUnfolderBase]: 3469/6945 cut-off events. [2025-03-17 19:24:48,081 INFO L125 PetriNetUnfolderBase]: For 15345/15732 co-relation queries the response was YES. [2025-03-17 19:24:48,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20937 conditions, 6945 events. 3469/6945 cut-off events. For 15345/15732 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 45920 event pairs, 727 based on Foata normal form. 67/6989 useless extension candidates. Maximal degree in co-relation 17824. Up to 3973 conditions per place. [2025-03-17 19:24:48,120 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2025-03-17 19:24:48,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 1202 flow [2025-03-17 19:24:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:24:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:24:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2025-03-17 19:24:48,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2025-03-17 19:24:48,122 INFO L175 Difference]: Start difference. First operand has 95 places, 77 transitions, 581 flow. Second operand 8 states and 212 transitions. [2025-03-17 19:24:48,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 1202 flow [2025-03-17 19:24:48,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:48,150 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2025-03-17 19:24:48,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2025-03-17 19:24:48,151 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2025-03-17 19:24:48,151 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2025-03-17 19:24:48,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:48,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:48,151 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:48,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:24:48,151 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:48,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -810686094, now seen corresponding path program 1 times [2025-03-17 19:24:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:48,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581889315] [2025-03-17 19:24:48,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:48,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:48,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:24:48,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:24:48,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:48,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:48,313 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 19:24:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581889315] [2025-03-17 19:24:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581889315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:48,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:48,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:24:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464737068] [2025-03-17 19:24:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:48,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:24:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:48,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:24:48,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:24:48,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:48,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:48,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:48,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:48,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:49,044 INFO L124 PetriNetUnfolderBase]: 3508/7154 cut-off events. [2025-03-17 19:24:49,045 INFO L125 PetriNetUnfolderBase]: For 14991/15277 co-relation queries the response was YES. [2025-03-17 19:24:49,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21148 conditions, 7154 events. 3508/7154 cut-off events. For 14991/15277 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 49116 event pairs, 948 based on Foata normal form. 12/7135 useless extension candidates. Maximal degree in co-relation 17964. Up to 5369 conditions per place. [2025-03-17 19:24:49,091 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2025-03-17 19:24:49,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2025-03-17 19:24:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:24:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:24:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2025-03-17 19:24:49,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2025-03-17 19:24:49,092 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2025-03-17 19:24:49,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2025-03-17 19:24:49,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:49,120 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2025-03-17 19:24:49,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2025-03-17 19:24:49,121 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2025-03-17 19:24:49,121 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2025-03-17 19:24:49,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:49,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:49,121 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:49,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:24:49,121 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:49,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:49,122 INFO L85 PathProgramCache]: Analyzing trace with hash -947885936, now seen corresponding path program 1 times [2025-03-17 19:24:49,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:49,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769266406] [2025-03-17 19:24:49,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:49,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:24:49,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:24:49,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:49,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:24:49,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769266406] [2025-03-17 19:24:49,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769266406] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:49,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:49,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499915137] [2025-03-17 19:24:49,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:49,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:49,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:49,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:49,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-17 19:24:49,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:49,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:49,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-17 19:24:49,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:49,914 INFO L124 PetriNetUnfolderBase]: 3533/7262 cut-off events. [2025-03-17 19:24:49,915 INFO L125 PetriNetUnfolderBase]: For 16092/16340 co-relation queries the response was YES. [2025-03-17 19:24:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21251 conditions, 7262 events. 3533/7262 cut-off events. For 16092/16340 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 50329 event pairs, 590 based on Foata normal form. 0/7261 useless extension candidates. Maximal degree in co-relation 18130. Up to 3403 conditions per place. [2025-03-17 19:24:49,961 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2025-03-17 19:24:49,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2025-03-17 19:24:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-17 19:24:49,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-17 19:24:49,962 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2025-03-17 19:24:49,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2025-03-17 19:24:49,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:49,992 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2025-03-17 19:24:49,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2025-03-17 19:24:49,992 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2025-03-17 19:24:49,992 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2025-03-17 19:24:49,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:49,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:49,992 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:49,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:24:49,993 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:49,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1565807118, now seen corresponding path program 1 times [2025-03-17 19:24:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:49,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737479673] [2025-03-17 19:24:49,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:50,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:24:50,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:24:50,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:50,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:50,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:50,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737479673] [2025-03-17 19:24:50,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737479673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:50,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522549771] [2025-03-17 19:24:50,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:50,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:50,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:50,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:50,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:24:50,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:24:50,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:24:50,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:50,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:50,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:24:50,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:50,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:24:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:50,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522549771] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:24:50,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:24:50,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:24:50,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746855950] [2025-03-17 19:24:50,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:24:50,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:24:50,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:50,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:24:50,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:24:50,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-17 19:24:50,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:50,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:50,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-17 19:24:50,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:51,378 INFO L124 PetriNetUnfolderBase]: 4338/8689 cut-off events. [2025-03-17 19:24:51,379 INFO L125 PetriNetUnfolderBase]: For 19517/19873 co-relation queries the response was YES. [2025-03-17 19:24:51,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27012 conditions, 8689 events. 4338/8689 cut-off events. For 19517/19873 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 58745 event pairs, 928 based on Foata normal form. 39/8697 useless extension candidates. Maximal degree in co-relation 23702. Up to 4364 conditions per place. [2025-03-17 19:24:51,443 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2025-03-17 19:24:51,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2025-03-17 19:24:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 19:24:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-17 19:24:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2025-03-17 19:24:51,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2025-03-17 19:24:51,445 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2025-03-17 19:24:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2025-03-17 19:24:51,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:51,482 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2025-03-17 19:24:51,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2025-03-17 19:24:51,483 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2025-03-17 19:24:51,483 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2025-03-17 19:24:51,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:51,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:51,483 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:51,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:24:51,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:51,685 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2125173292, now seen corresponding path program 1 times [2025-03-17 19:24:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354788485] [2025-03-17 19:24:51,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:51,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:24:51,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:24:51,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:51,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354788485] [2025-03-17 19:24:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354788485] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835000192] [2025-03-17 19:24:51,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:51,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:51,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:51,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:24:51,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:24:51,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:24:51,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:51,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:51,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:24:51,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:52,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:24:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835000192] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:52,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:24:52,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-17 19:24:52,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654954202] [2025-03-17 19:24:52,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:52,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:24:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:52,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:24:52,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:24:52,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-17 19:24:52,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:52,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:52,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-17 19:24:52,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:52,660 INFO L124 PetriNetUnfolderBase]: 4902/9398 cut-off events. [2025-03-17 19:24:52,660 INFO L125 PetriNetUnfolderBase]: For 24879/24933 co-relation queries the response was YES. [2025-03-17 19:24:52,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29814 conditions, 9398 events. 4902/9398 cut-off events. For 24879/24933 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 62896 event pairs, 712 based on Foata normal form. 262/9392 useless extension candidates. Maximal degree in co-relation 28867. Up to 5332 conditions per place. [2025-03-17 19:24:52,728 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2025-03-17 19:24:52,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2025-03-17 19:24:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-03-17 19:24:52,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-03-17 19:24:52,729 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2025-03-17 19:24:52,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2025-03-17 19:24:52,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2025-03-17 19:24:52,779 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2025-03-17 19:24:52,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2025-03-17 19:24:52,780 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2025-03-17 19:24:52,780 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2025-03-17 19:24:52,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:52,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:52,780 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:24:52,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:24:52,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 19:24:52,981 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:52,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1455861449, now seen corresponding path program 1 times [2025-03-17 19:24:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:52,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447667850] [2025-03-17 19:24:52,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:52,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:24:52,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:24:52,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:52,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:24:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447667850] [2025-03-17 19:24:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447667850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:53,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:53,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:53,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793900213] [2025-03-17 19:24:53,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:53,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:53,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:53,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:53,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-17 19:24:53,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:53,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:53,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-17 19:24:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:53,664 INFO L124 PetriNetUnfolderBase]: 4544/9001 cut-off events. [2025-03-17 19:24:53,664 INFO L125 PetriNetUnfolderBase]: For 23407/23411 co-relation queries the response was YES. [2025-03-17 19:24:53,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28784 conditions, 9001 events. 4544/9001 cut-off events. For 23407/23411 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 60770 event pairs, 901 based on Foata normal form. 262/9230 useless extension candidates. Maximal degree in co-relation 27056. Up to 4373 conditions per place. [2025-03-17 19:24:53,720 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2025-03-17 19:24:53,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2025-03-17 19:24:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-03-17 19:24:53,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-03-17 19:24:53,721 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2025-03-17 19:24:53,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2025-03-17 19:24:53,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:53,771 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2025-03-17 19:24:53,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2025-03-17 19:24:53,771 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2025-03-17 19:24:53,771 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2025-03-17 19:24:53,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:53,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:53,772 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:53,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:24:53,772 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:53,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -667934641, now seen corresponding path program 1 times [2025-03-17 19:24:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582730825] [2025-03-17 19:24:53,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:53,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 19:24:53,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 19:24:53,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:53,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582730825] [2025-03-17 19:24:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582730825] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398559132] [2025-03-17 19:24:53,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:53,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:53,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:24:53,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 19:24:54,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 19:24:54,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:54,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:54,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 19:24:54,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:54,069 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:24:54,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398559132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:54,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:24:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2025-03-17 19:24:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974968283] [2025-03-17 19:24:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:54,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:24:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:54,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:24:54,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:24:54,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:54,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:54,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:54,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:54,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:54,874 INFO L124 PetriNetUnfolderBase]: 4881/9552 cut-off events. [2025-03-17 19:24:54,875 INFO L125 PetriNetUnfolderBase]: For 27569/27569 co-relation queries the response was YES. [2025-03-17 19:24:54,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31361 conditions, 9552 events. 4881/9552 cut-off events. For 27569/27569 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 65192 event pairs, 1083 based on Foata normal form. 111/9626 useless extension candidates. Maximal degree in co-relation 29652. Up to 3106 conditions per place. [2025-03-17 19:24:54,935 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2025-03-17 19:24:54,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2011 flow [2025-03-17 19:24:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:24:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:24:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2025-03-17 19:24:54,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2025-03-17 19:24:54,936 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 10 states and 259 transitions. [2025-03-17 19:24:54,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2011 flow [2025-03-17 19:24:54,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 1973 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:54,985 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1345 flow [2025-03-17 19:24:54,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1345, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2025-03-17 19:24:54,985 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2025-03-17 19:24:54,985 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1345 flow [2025-03-17 19:24:54,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:54,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:54,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:54,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 19:24:55,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 19:24:55,186 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:55,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1929392573, now seen corresponding path program 1 times [2025-03-17 19:24:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768517311] [2025-03-17 19:24:55,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:55,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:24:55,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:24:55,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:55,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:55,303 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 19:24:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768517311] [2025-03-17 19:24:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768517311] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:24:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636621357] [2025-03-17 19:24:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:55,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 19:24:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:55,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 19:24:55,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:24:55,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:55,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1345 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:55,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:55,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:55,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:56,232 INFO L124 PetriNetUnfolderBase]: 5770/11245 cut-off events. [2025-03-17 19:24:56,232 INFO L125 PetriNetUnfolderBase]: For 41740/41740 co-relation queries the response was YES. [2025-03-17 19:24:56,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37616 conditions, 11245 events. 5770/11245 cut-off events. For 41740/41740 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 78557 event pairs, 1222 based on Foata normal form. 161/11367 useless extension candidates. Maximal degree in co-relation 35456. Up to 5362 conditions per place. [2025-03-17 19:24:56,323 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 197 selfloop transitions, 41 changer transitions 0/249 dead transitions. [2025-03-17 19:24:56,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 249 transitions, 2528 flow [2025-03-17 19:24:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 19:24:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 19:24:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 323 transitions. [2025-03-17 19:24:56,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5176282051282052 [2025-03-17 19:24:56,325 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1345 flow. Second operand 13 states and 323 transitions. [2025-03-17 19:24:56,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 249 transitions, 2528 flow [2025-03-17 19:24:56,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 249 transitions, 2488 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-03-17 19:24:56,401 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 1722 flow [2025-03-17 19:24:56,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1722, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2025-03-17 19:24:56,402 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 108 predicate places. [2025-03-17 19:24:56,402 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 1722 flow [2025-03-17 19:24:56,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:56,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:56,402 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:56,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:24:56,402 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:56,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1661735763, now seen corresponding path program 1 times [2025-03-17 19:24:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:56,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628994193] [2025-03-17 19:24:56,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:56,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:24:56,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:24:56,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:56,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:56,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:56,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628994193] [2025-03-17 19:24:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628994193] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441456246] [2025-03-17 19:24:56,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:56,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:56,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:56,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:24:56,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:24:56,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:24:56,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:56,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:56,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 19:24:56,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:56,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:24:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:56,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441456246] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:24:56,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:24:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-03-17 19:24:56,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454515789] [2025-03-17 19:24:56,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:24:56,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 19:24:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:56,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 19:24:56,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-17 19:24:56,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-17 19:24:56,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 1722 flow. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:56,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:56,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-17 19:24:56,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:58,205 INFO L124 PetriNetUnfolderBase]: 7477/14250 cut-off events. [2025-03-17 19:24:58,205 INFO L125 PetriNetUnfolderBase]: For 51812/51812 co-relation queries the response was YES. [2025-03-17 19:24:58,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48176 conditions, 14250 events. 7477/14250 cut-off events. For 51812/51812 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 101438 event pairs, 1274 based on Foata normal form. 196/14395 useless extension candidates. Maximal degree in co-relation 46420. Up to 3458 conditions per place. [2025-03-17 19:24:58,330 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 266 selfloop transitions, 111 changer transitions 0/386 dead transitions. [2025-03-17 19:24:58,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 386 transitions, 3856 flow [2025-03-17 19:24:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 19:24:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-17 19:24:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 569 transitions. [2025-03-17 19:24:58,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4741666666666667 [2025-03-17 19:24:58,334 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 1722 flow. Second operand 25 states and 569 transitions. [2025-03-17 19:24:58,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 386 transitions, 3856 flow [2025-03-17 19:24:58,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 386 transitions, 3795 flow, removed 27 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:58,448 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 2551 flow [2025-03-17 19:24:58,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2551, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2025-03-17 19:24:58,448 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2025-03-17 19:24:58,448 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 2551 flow [2025-03-17 19:24:58,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:58,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:58,449 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:58,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:24:58,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:58,649 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:24:58,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:58,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1934093058, now seen corresponding path program 1 times [2025-03-17 19:24:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491008685] [2025-03-17 19:24:58,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:58,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:24:58,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:24:58,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:58,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:58,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491008685] [2025-03-17 19:24:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491008685] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224594341] [2025-03-17 19:24:58,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:58,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:58,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:58,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:24:58,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:24:58,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:24:58,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:24:58,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:58,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:58,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 19:24:58,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:24:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:58,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:24:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224594341] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:24:58,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:24:58,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-03-17 19:24:58,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709670402] [2025-03-17 19:24:58,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:24:58,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 19:24:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:58,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 19:24:58,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-03-17 19:24:59,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:24:59,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 2551 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:59,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:59,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:24:59,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:00,681 INFO L124 PetriNetUnfolderBase]: 8007/15702 cut-off events. [2025-03-17 19:25:00,681 INFO L125 PetriNetUnfolderBase]: For 76495/76495 co-relation queries the response was YES. [2025-03-17 19:25:00,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54003 conditions, 15702 events. 8007/15702 cut-off events. For 76495/76495 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 114116 event pairs, 1674 based on Foata normal form. 402/16055 useless extension candidates. Maximal degree in co-relation 51870. Up to 3911 conditions per place. [2025-03-17 19:25:00,823 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 212 selfloop transitions, 149 changer transitions 0/374 dead transitions. [2025-03-17 19:25:00,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 374 transitions, 4381 flow [2025-03-17 19:25:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:25:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:25:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 504 transitions. [2025-03-17 19:25:00,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 19:25:00,825 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 2551 flow. Second operand 21 states and 504 transitions. [2025-03-17 19:25:00,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 374 transitions, 4381 flow [2025-03-17 19:25:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 374 transitions, 3992 flow, removed 108 selfloop flow, removed 12 redundant places. [2025-03-17 19:25:00,983 INFO L231 Difference]: Finished difference. Result has 181 places, 198 transitions, 2909 flow [2025-03-17 19:25:00,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2909, PETRI_PLACES=181, PETRI_TRANSITIONS=198} [2025-03-17 19:25:00,983 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 135 predicate places. [2025-03-17 19:25:00,983 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 198 transitions, 2909 flow [2025-03-17 19:25:00,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 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 19:25:00,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:00,984 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:00,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 19:25:01,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:01,184 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:01,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash -10507134, now seen corresponding path program 2 times [2025-03-17 19:25:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354855235] [2025-03-17 19:25:01,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:25:01,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:01,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-17 19:25:01,204 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 43 statements. [2025-03-17 19:25:01,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:25:01,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-17 19:25:01,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:01,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354855235] [2025-03-17 19:25:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354855235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:01,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:01,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:25:01,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41528085] [2025-03-17 19:25:01,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:01,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:25:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:01,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:25:01,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:25:01,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-03-17 19:25:01,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 198 transitions, 2909 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:01,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:01,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-03-17 19:25:01,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:02,639 INFO L124 PetriNetUnfolderBase]: 6676/13417 cut-off events. [2025-03-17 19:25:02,639 INFO L125 PetriNetUnfolderBase]: For 52541/52541 co-relation queries the response was YES. [2025-03-17 19:25:02,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45480 conditions, 13417 events. 6676/13417 cut-off events. For 52541/52541 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 96158 event pairs, 2827 based on Foata normal form. 6/13382 useless extension candidates. Maximal degree in co-relation 45426. Up to 10795 conditions per place. [2025-03-17 19:25:02,734 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 163 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2025-03-17 19:25:02,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 191 transitions, 2909 flow [2025-03-17 19:25:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:25:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:25:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-17 19:25:02,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2025-03-17 19:25:02,735 INFO L175 Difference]: Start difference. First operand has 181 places, 198 transitions, 2909 flow. Second operand 3 states and 97 transitions. [2025-03-17 19:25:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 191 transitions, 2909 flow [2025-03-17 19:25:02,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 191 transitions, 2501 flow, removed 162 selfloop flow, removed 13 redundant places. [2025-03-17 19:25:02,862 INFO L231 Difference]: Finished difference. Result has 167 places, 178 transitions, 2130 flow [2025-03-17 19:25:02,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2130, PETRI_PLACES=167, PETRI_TRANSITIONS=178} [2025-03-17 19:25:02,862 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 121 predicate places. [2025-03-17 19:25:02,862 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 178 transitions, 2130 flow [2025-03-17 19:25:02,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:02,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:02,862 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-03-17 19:25:02,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 19:25:02,862 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:02,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -439942721, now seen corresponding path program 2 times [2025-03-17 19:25:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211692220] [2025-03-17 19:25:02,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:25:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:02,875 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-17 19:25:02,892 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 19:25:02,892 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:25:02,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:03,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:03,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211692220] [2025-03-17 19:25:03,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211692220] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:25:03,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355533174] [2025-03-17 19:25:03,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:25:03,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:03,149 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:25:03,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:25:03,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-17 19:25:03,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 19:25:03,313 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:25:03,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:03,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:25:03,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:25:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:03,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:25:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355533174] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:25:03,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:25:03,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 19:25:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401911689] [2025-03-17 19:25:03,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:25:03,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:25:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:03,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:25:03,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:25:03,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-17 19:25:03,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 2130 flow. Second operand has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 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 19:25:03,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:03,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-17 19:25:03,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:05,811 INFO L124 PetriNetUnfolderBase]: 9336/18409 cut-off events. [2025-03-17 19:25:05,811 INFO L125 PetriNetUnfolderBase]: For 52012/52012 co-relation queries the response was YES. [2025-03-17 19:25:05,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60149 conditions, 18409 events. 9336/18409 cut-off events. For 52012/52012 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 128770 event pairs, 2832 based on Foata normal form. 144/18484 useless extension candidates. Maximal degree in co-relation 60099. Up to 8665 conditions per place. [2025-03-17 19:25:05,969 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 445 selfloop transitions, 55 changer transitions 0/516 dead transitions. [2025-03-17 19:25:05,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 516 transitions, 4811 flow [2025-03-17 19:25:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 19:25:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-17 19:25:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 714 transitions. [2025-03-17 19:25:05,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2025-03-17 19:25:05,971 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 2130 flow. Second operand 23 states and 714 transitions. [2025-03-17 19:25:05,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 516 transitions, 4811 flow [2025-03-17 19:25:06,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 516 transitions, 4787 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 19:25:06,128 INFO L231 Difference]: Finished difference. Result has 193 places, 204 transitions, 2634 flow [2025-03-17 19:25:06,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2634, PETRI_PLACES=193, PETRI_TRANSITIONS=204} [2025-03-17 19:25:06,128 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 147 predicate places. [2025-03-17 19:25:06,128 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 204 transitions, 2634 flow [2025-03-17 19:25:06,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 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 19:25:06,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:06,129 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:06,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 19:25:06,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:06,329 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:06,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -579911647, now seen corresponding path program 3 times [2025-03-17 19:25:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:06,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193953901] [2025-03-17 19:25:06,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:25:06,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:06,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 54 statements into 3 equivalence classes. [2025-03-17 19:25:06,414 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 54 of 54 statements. [2025-03-17 19:25:06,415 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 19:25:06,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193953901] [2025-03-17 19:25:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193953901] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:25:06,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991510056] [2025-03-17 19:25:06,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:25:06,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:06,666 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:25:06,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:25:06,732 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 54 statements into 3 equivalence classes. [2025-03-17 19:25:06,905 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 54 of 54 statements. [2025-03-17 19:25:06,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 19:25:06,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:06,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:25:06,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:25:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:06,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:25:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991510056] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:25:07,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:25:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2025-03-17 19:25:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341150826] [2025-03-17 19:25:07,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:25:07,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:25:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:07,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:25:07,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:25:07,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:25:07,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 204 transitions, 2634 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 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 19:25:07,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:07,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:25:07,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:09,811 INFO L124 PetriNetUnfolderBase]: 12487/24426 cut-off events. [2025-03-17 19:25:09,811 INFO L125 PetriNetUnfolderBase]: For 74745/74745 co-relation queries the response was YES. [2025-03-17 19:25:10,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80636 conditions, 24426 events. 12487/24426 cut-off events. For 74745/74745 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 179718 event pairs, 2046 based on Foata normal form. 188/24539 useless extension candidates. Maximal degree in co-relation 80581. Up to 4789 conditions per place. [2025-03-17 19:25:10,068 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 363 selfloop transitions, 194 changer transitions 0/569 dead transitions. [2025-03-17 19:25:10,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 569 transitions, 5987 flow [2025-03-17 19:25:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 19:25:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 19:25:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 771 transitions. [2025-03-17 19:25:10,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.501953125 [2025-03-17 19:25:10,069 INFO L175 Difference]: Start difference. First operand has 193 places, 204 transitions, 2634 flow. Second operand 32 states and 771 transitions. [2025-03-17 19:25:10,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 569 transitions, 5987 flow [2025-03-17 19:25:10,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 569 transitions, 5895 flow, removed 25 selfloop flow, removed 5 redundant places. [2025-03-17 19:25:10,300 INFO L231 Difference]: Finished difference. Result has 227 places, 288 transitions, 4334 flow [2025-03-17 19:25:10,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4334, PETRI_PLACES=227, PETRI_TRANSITIONS=288} [2025-03-17 19:25:10,301 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 181 predicate places. [2025-03-17 19:25:10,301 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 288 transitions, 4334 flow [2025-03-17 19:25:10,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 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 19:25:10,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:10,301 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:10,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 19:25:10,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-17 19:25:10,502 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:10,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash -644690232, now seen corresponding path program 1 times [2025-03-17 19:25:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874007587] [2025-03-17 19:25:10,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:10,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-17 19:25:10,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 19:25:10,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:10,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874007587] [2025-03-17 19:25:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874007587] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:25:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741713862] [2025-03-17 19:25:10,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:10,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:10,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:25:10,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:25:10,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-17 19:25:10,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 19:25:10,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:10,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:10,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 19:25:10,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:25:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:10,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:25:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741713862] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:25:11,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:25:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2025-03-17 19:25:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922321182] [2025-03-17 19:25:11,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:25:11,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 19:25:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:11,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 19:25:11,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2025-03-17 19:25:11,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-17 19:25:11,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 288 transitions, 4334 flow. Second operand has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:11,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:11,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-17 19:25:11,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:16,423 INFO L124 PetriNetUnfolderBase]: 20565/38027 cut-off events. [2025-03-17 19:25:16,423 INFO L125 PetriNetUnfolderBase]: For 126720/126720 co-relation queries the response was YES. [2025-03-17 19:25:16,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128642 conditions, 38027 events. 20565/38027 cut-off events. For 126720/126720 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 285598 event pairs, 3199 based on Foata normal form. 573/38496 useless extension candidates. Maximal degree in co-relation 128579. Up to 9608 conditions per place. [2025-03-17 19:25:16,916 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 379 selfloop transitions, 379 changer transitions 0/766 dead transitions. [2025-03-17 19:25:16,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 766 transitions, 9498 flow [2025-03-17 19:25:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-17 19:25:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-03-17 19:25:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 839 transitions. [2025-03-17 19:25:16,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4481837606837607 [2025-03-17 19:25:16,918 INFO L175 Difference]: Start difference. First operand has 227 places, 288 transitions, 4334 flow. Second operand 39 states and 839 transitions. [2025-03-17 19:25:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 766 transitions, 9498 flow [2025-03-17 19:25:17,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 766 transitions, 8893 flow, removed 138 selfloop flow, removed 14 redundant places. [2025-03-17 19:25:17,435 INFO L231 Difference]: Finished difference. Result has 242 places, 442 transitions, 6972 flow [2025-03-17 19:25:17,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6972, PETRI_PLACES=242, PETRI_TRANSITIONS=442} [2025-03-17 19:25:17,435 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 196 predicate places. [2025-03-17 19:25:17,435 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 442 transitions, 6972 flow [2025-03-17 19:25:17,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:17,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:17,436 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:17,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 19:25:17,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-17 19:25:17,640 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:17,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1637666435, now seen corresponding path program 4 times [2025-03-17 19:25:17,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002013550] [2025-03-17 19:25:17,640 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:25:17,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:17,657 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-03-17 19:25:17,684 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 19:25:17,684 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:25:17,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002013550] [2025-03-17 19:25:17,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002013550] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:25:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552686319] [2025-03-17 19:25:17,956 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:25:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:17,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:25:17,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 19:25:18,035 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-03-17 19:25:18,141 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 19:25:18,141 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:25:18,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:18,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 19:25:18,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:25:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:18,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:25:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:25:18,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552686319] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:25:18,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:25:18,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2025-03-17 19:25:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541965226] [2025-03-17 19:25:18,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:25:18,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 19:25:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:18,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 19:25:18,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2025-03-17 19:25:18,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:25:18,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 442 transitions, 6972 flow. Second operand has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 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 19:25:18,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:18,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:25:18,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:27,925 INFO L124 PetriNetUnfolderBase]: 29198/57028 cut-off events. [2025-03-17 19:25:27,925 INFO L125 PetriNetUnfolderBase]: For 238959/238959 co-relation queries the response was YES. [2025-03-17 19:25:28,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194063 conditions, 57028 events. 29198/57028 cut-off events. For 238959/238959 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 472151 event pairs, 4970 based on Foata normal form. 590/57425 useless extension candidates. Maximal degree in co-relation 194001. Up to 9185 conditions per place. [2025-03-17 19:25:28,726 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 488 selfloop transitions, 649 changer transitions 0/1150 dead transitions. [2025-03-17 19:25:28,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1150 transitions, 15648 flow [2025-03-17 19:25:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-17 19:25:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-03-17 19:25:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1033 transitions. [2025-03-17 19:25:28,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5248983739837398 [2025-03-17 19:25:28,727 INFO L175 Difference]: Start difference. First operand has 242 places, 442 transitions, 6972 flow. Second operand 41 states and 1033 transitions. [2025-03-17 19:25:28,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1150 transitions, 15648 flow [2025-03-17 19:25:30,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1150 transitions, 14334 flow, removed 372 selfloop flow, removed 11 redundant places. [2025-03-17 19:25:30,073 INFO L231 Difference]: Finished difference. Result has 272 places, 736 transitions, 12066 flow [2025-03-17 19:25:30,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6086, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=12066, PETRI_PLACES=272, PETRI_TRANSITIONS=736} [2025-03-17 19:25:30,074 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 226 predicate places. [2025-03-17 19:25:30,074 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 736 transitions, 12066 flow [2025-03-17 19:25:30,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 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 19:25:30,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:30,074 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:30,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 19:25:30,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-17 19:25:30,275 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:30,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2063779266, now seen corresponding path program 1 times [2025-03-17 19:25:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555077492] [2025-03-17 19:25:30,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:30,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-17 19:25:30,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-17 19:25:30,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:30,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-17 19:25:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555077492] [2025-03-17 19:25:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555077492] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:25:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980791531] [2025-03-17 19:25:30,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:30,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:30,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:25:30,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 19:25:30,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-17 19:25:30,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-17 19:25:30,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:30,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:30,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 19:25:30,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:25:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-17 19:25:30,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:25:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-17 19:25:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980791531] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:25:31,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:25:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 19:25:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810933006] [2025-03-17 19:25:31,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:25:31,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:25:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:31,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:25:31,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:25:31,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-17 19:25:31,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 736 transitions, 12066 flow. Second operand has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 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 19:25:31,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:31,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-17 19:25:31,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:49,695 INFO L124 PetriNetUnfolderBase]: 50570/98915 cut-off events. [2025-03-17 19:25:49,695 INFO L125 PetriNetUnfolderBase]: For 399679/399679 co-relation queries the response was YES. [2025-03-17 19:25:51,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336541 conditions, 98915 events. 50570/98915 cut-off events. For 399679/399679 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 898302 event pairs, 9134 based on Foata normal form. 652/99218 useless extension candidates. Maximal degree in co-relation 336475. Up to 15538 conditions per place. [2025-03-17 19:25:51,550 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 490 selfloop transitions, 1103 changer transitions 0/1606 dead transitions. [2025-03-17 19:25:51,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1606 transitions, 25697 flow [2025-03-17 19:25:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-17 19:25:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-17 19:25:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 786 transitions. [2025-03-17 19:25:51,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5282258064516129 [2025-03-17 19:25:51,552 INFO L175 Difference]: Start difference. First operand has 272 places, 736 transitions, 12066 flow. Second operand 31 states and 786 transitions. [2025-03-17 19:25:51,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1606 transitions, 25697 flow [2025-03-17 19:25:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1606 transitions, 25049 flow, removed 162 selfloop flow, removed 16 redundant places. [2025-03-17 19:25:55,332 INFO L231 Difference]: Finished difference. Result has 302 places, 1299 transitions, 24710 flow [2025-03-17 19:25:55,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11716, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=24710, PETRI_PLACES=302, PETRI_TRANSITIONS=1299} [2025-03-17 19:25:55,333 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 256 predicate places. [2025-03-17 19:25:55,333 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 1299 transitions, 24710 flow [2025-03-17 19:25:55,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 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 19:25:55,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:55,333 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:55,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 19:25:55,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-17 19:25:55,533 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-17 19:25:55,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -596821221, now seen corresponding path program 1 times [2025-03-17 19:25:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610361228] [2025-03-17 19:25:55,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:55,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-17 19:25:55,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-17 19:25:55,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:55,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 19:25:55,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610361228] [2025-03-17 19:25:55,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610361228] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:25:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646316750] [2025-03-17 19:25:55,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:55,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:25:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:55,866 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:25:55,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 19:25:55,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-17 19:25:56,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-17 19:25:56,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:56,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:56,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-17 19:25:56,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:25:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 19:25:56,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:25:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 19:25:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646316750] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:25:56,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:25:56,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2025-03-17 19:25:56,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977214080] [2025-03-17 19:25:56,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:25:56,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 19:25:56,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:56,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 19:25:56,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2025-03-17 19:25:56,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-17 19:25:56,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1299 transitions, 24710 flow. Second operand has 28 states, 28 states have (on average 18.0) internal successors, (504), 28 states have internal predecessors, (504), 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 19:25:56,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:56,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-17 19:25:56,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand