./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:39:13,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:39:13,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:39:13,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:39:13,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:39:13,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:39:13,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:39:13,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:39:13,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:39:13,836 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:39:13,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:39:13,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:39:13,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:39:13,837 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:39:13,838 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:13,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:39:13,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:39:13,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:39:13,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:39:13,840 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 -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2025-03-17 19:39:14,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:39:14,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:39:14,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:39:14,084 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:39:14,085 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:39:14,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2025-03-17 19:39:15,235 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150b58c5e/11adaa3e5e2540d3b4240a83b413a0e7/FLAGb70d8f08a [2025-03-17 19:39:15,562 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:39:15,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2025-03-17 19:39:15,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150b58c5e/11adaa3e5e2540d3b4240a83b413a0e7/FLAGb70d8f08a [2025-03-17 19:39:15,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150b58c5e/11adaa3e5e2540d3b4240a83b413a0e7 [2025-03-17 19:39:15,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:39:15,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:39:15,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:15,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:39:15,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:39:15,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:15" (1/1) ... [2025-03-17 19:39:15,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66aa4b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:15, skipping insertion in model container [2025-03-17 19:39:15,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:15" (1/1) ... [2025-03-17 19:39:15,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:39:15,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:15,994 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:39:16,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:16,092 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:39:16,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16 WrapperNode [2025-03-17 19:39:16,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:16,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:16,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:39:16,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:39:16,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,131 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 276 [2025-03-17 19:39:16,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:16,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:39:16,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:39:16,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:39:16,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,154 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2025-03-17 19:39:16,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:39:16,183 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:39:16,183 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:39:16,183 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:39:16,184 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (1/1) ... [2025-03-17 19:39:16,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:16,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:16,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:39:16,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:39:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:39:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:39:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:39:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:39:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:39:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:39:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:39:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:39:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:39:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:39:16,234 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:39:16,350 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:39:16,352 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:39:16,629 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:39:16,629 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:39:16,705 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:39:16,705 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:39:16,968 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:39:16,968 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:39:16,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:16 BoogieIcfgContainer [2025-03-17 19:39:16,968 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:39:16,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:39:16,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:39:16,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:39:16,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:39:15" (1/3) ... [2025-03-17 19:39:16,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10904971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:16, skipping insertion in model container [2025-03-17 19:39:16,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:16" (2/3) ... [2025-03-17 19:39:16,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10904971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:16, skipping insertion in model container [2025-03-17 19:39:16,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:16" (3/3) ... [2025-03-17 19:39:16,977 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2025-03-17 19:39:16,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:39:16,989 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_77-tricky_address4_racing.i that has 2 procedures, 89 locations, 1 initial locations, 11 loop locations, and 16 error locations. [2025-03-17 19:39:16,989 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:39:17,029 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:39:17,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 113 transitions, 233 flow [2025-03-17 19:39:17,093 INFO L124 PetriNetUnfolderBase]: 35/159 cut-off events. [2025-03-17 19:39:17,097 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:17,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 35/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 633 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2025-03-17 19:39:17,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 113 transitions, 233 flow [2025-03-17 19:39:17,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 112 transitions, 231 flow [2025-03-17 19:39:17,118 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:17,130 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;@48381504, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:17,131 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-03-17 19:39:17,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:17,138 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:17,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:17,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:17,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:17,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:17,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 665658, now seen corresponding path program 1 times [2025-03-17 19:39:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144712959] [2025-03-17 19:39:17,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:17,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:17,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:17,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:17,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144712959] [2025-03-17 19:39:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144712959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:17,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299457314] [2025-03-17 19:39:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:17,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:17,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:17,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:17,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:17,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:17,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:17,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:17,762 INFO L124 PetriNetUnfolderBase]: 486/1471 cut-off events. [2025-03-17 19:39:17,762 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:17,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 1471 events. 486/1471 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9791 event pairs, 440 based on Foata normal form. 230/1515 useless extension candidates. Maximal degree in co-relation 2361. Up to 973 conditions per place. [2025-03-17 19:39:17,775 INFO L140 encePairwiseOnDemand]: 87/113 looper letters, 49 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2025-03-17 19:39:17,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 299 flow [2025-03-17 19:39:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2025-03-17 19:39:17,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5376106194690266 [2025-03-17 19:39:17,791 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 231 flow. Second operand 4 states and 243 transitions. [2025-03-17 19:39:17,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 299 flow [2025-03-17 19:39:17,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:17,799 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 215 flow [2025-03-17 19:39:17,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2025-03-17 19:39:17,805 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2025-03-17 19:39:17,805 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 215 flow [2025-03-17 19:39:17,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:17,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:39:17,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:17,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1643655210, now seen corresponding path program 1 times [2025-03-17 19:39:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:17,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893348529] [2025-03-17 19:39:17,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:17,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:17,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:17,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:17,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893348529] [2025-03-17 19:39:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893348529] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632149029] [2025-03-17 19:39:17,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:17,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:17,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:39:17,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:18,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:18,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:18,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,082 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632149029] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:18,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370687795] [2025-03-17 19:39:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:18,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:18,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:18,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:18,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:18,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:18,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:18,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:18,310 INFO L124 PetriNetUnfolderBase]: 486/1470 cut-off events. [2025-03-17 19:39:18,311 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:39:18,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1470 events. 486/1470 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9785 event pairs, 440 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 2443. Up to 968 conditions per place. [2025-03-17 19:39:18,321 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 45 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2025-03-17 19:39:18,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 313 flow [2025-03-17 19:39:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2025-03-17 19:39:18,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44837758112094395 [2025-03-17 19:39:18,326 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 215 flow. Second operand 6 states and 304 transitions. [2025-03-17 19:39:18,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 313 flow [2025-03-17 19:39:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:18,329 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 221 flow [2025-03-17 19:39:18,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2025-03-17 19:39:18,330 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2025-03-17 19:39:18,330 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 221 flow [2025-03-17 19:39:18,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:18,330 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:18,337 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 19:39:18,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:18,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:18,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash 586296607, now seen corresponding path program 1 times [2025-03-17 19:39:18,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:18,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474188111] [2025-03-17 19:39:18,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:18,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:18,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:18,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474188111] [2025-03-17 19:39:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474188111] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134763369] [2025-03-17 19:39:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:18,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:18,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:18,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:18,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:18,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:18,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:18,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:18,761 INFO L124 PetriNetUnfolderBase]: 486/1469 cut-off events. [2025-03-17 19:39:18,761 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 19:39:18,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 1469 events. 486/1469 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9770 event pairs, 440 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 2439. Up to 971 conditions per place. [2025-03-17 19:39:18,771 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 46 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2025-03-17 19:39:18,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 317 flow [2025-03-17 19:39:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-03-17 19:39:18,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5162241887905604 [2025-03-17 19:39:18,773 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 221 flow. Second operand 3 states and 175 transitions. [2025-03-17 19:39:18,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 317 flow [2025-03-17 19:39:18,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 295 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:18,776 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 203 flow [2025-03-17 19:39:18,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2025-03-17 19:39:18,776 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2025-03-17 19:39:18,776 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 203 flow [2025-03-17 19:39:18,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:18,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:18,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:39:18,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:18,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:18,777 INFO L85 PathProgramCache]: Analyzing trace with hash 790575058, now seen corresponding path program 1 times [2025-03-17 19:39:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107894865] [2025-03-17 19:39:18,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:18,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:18,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:18,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:18,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:18,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107894865] [2025-03-17 19:39:18,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107894865] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:18,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410522967] [2025-03-17 19:39:18,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:18,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:18,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:18,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:18,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:39:18,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:18,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:18,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:18,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410522967] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:18,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:18,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:18,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901004184] [2025-03-17 19:39:18,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:18,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:18,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:18,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:18,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:19,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 203 flow. Second operand has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:19,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:19,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:19,228 INFO L124 PetriNetUnfolderBase]: 486/1473 cut-off events. [2025-03-17 19:39:19,228 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 19:39:19,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 1473 events. 486/1473 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9786 event pairs, 440 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 2432. Up to 969 conditions per place. [2025-03-17 19:39:19,235 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 46 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-17 19:39:19,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 324 flow [2025-03-17 19:39:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2025-03-17 19:39:19,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44121365360303416 [2025-03-17 19:39:19,236 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 203 flow. Second operand 7 states and 349 transitions. [2025-03-17 19:39:19,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 324 flow [2025-03-17 19:39:19,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:19,239 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 229 flow [2025-03-17 19:39:19,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2025-03-17 19:39:19,239 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2025-03-17 19:39:19,239 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 229 flow [2025-03-17 19:39:19,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:19,240 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:19,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:39:19,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-17 19:39:19,440 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:19,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1669406126, now seen corresponding path program 2 times [2025-03-17 19:39:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923219521] [2025-03-17 19:39:19,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:19,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:19,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:19,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:19,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923219521] [2025-03-17 19:39:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923219521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:19,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:19,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031411484] [2025-03-17 19:39:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:19,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:19,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:19,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:19,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 113 [2025-03-17 19:39:19,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:19,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 113 [2025-03-17 19:39:19,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:19,723 INFO L124 PetriNetUnfolderBase]: 483/1356 cut-off events. [2025-03-17 19:39:19,723 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 19:39:19,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 1356 events. 483/1356 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9010 event pairs, 0 based on Foata normal form. 21/1244 useless extension candidates. Maximal degree in co-relation 2317. Up to 912 conditions per place. [2025-03-17 19:39:19,729 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 92 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-03-17 19:39:19,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 497 flow [2025-03-17 19:39:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2025-03-17 19:39:19,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685840707964602 [2025-03-17 19:39:19,731 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 229 flow. Second operand 4 states and 257 transitions. [2025-03-17 19:39:19,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 497 flow [2025-03-17 19:39:19,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 134 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:19,738 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 231 flow [2025-03-17 19:39:19,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2025-03-17 19:39:19,739 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2025-03-17 19:39:19,739 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 231 flow [2025-03-17 19:39:19,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:19,739 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:19,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:39:19,739 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:19,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2019824339, now seen corresponding path program 1 times [2025-03-17 19:39:19,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:19,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280810676] [2025-03-17 19:39:19,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:19,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:19,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:39:19,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:39:19,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:19,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280810676] [2025-03-17 19:39:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280810676] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:19,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371849315] [2025-03-17 19:39:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:19,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:19,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:19,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:19,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:19,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:19,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:19,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:20,067 INFO L124 PetriNetUnfolderBase]: 506/1487 cut-off events. [2025-03-17 19:39:20,068 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-03-17 19:39:20,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1487 events. 506/1487 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9881 event pairs, 378 based on Foata normal form. 23/1346 useless extension candidates. Maximal degree in co-relation 2518. Up to 875 conditions per place. [2025-03-17 19:39:20,074 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 95 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2025-03-17 19:39:20,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 136 transitions, 521 flow [2025-03-17 19:39:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2025-03-17 19:39:20,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5796460176991151 [2025-03-17 19:39:20,075 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 231 flow. Second operand 4 states and 262 transitions. [2025-03-17 19:39:20,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 136 transitions, 521 flow [2025-03-17 19:39:20,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 511 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:20,078 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 229 flow [2025-03-17 19:39:20,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2025-03-17 19:39:20,080 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2025-03-17 19:39:20,080 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 229 flow [2025-03-17 19:39:20,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:20,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:20,081 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:20,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:39:20,081 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:20,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1851003954, now seen corresponding path program 1 times [2025-03-17 19:39:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:20,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527138452] [2025-03-17 19:39:20,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:20,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:20,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:20,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:20,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:20,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527138452] [2025-03-17 19:39:20,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527138452] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873167904] [2025-03-17 19:39:20,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:20,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:20,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:39:20,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:20,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:20,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:20,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:20,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:20,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:20,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873167904] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:20,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:20,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:20,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806431939] [2025-03-17 19:39:20,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:20,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:20,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:20,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:20,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:20,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 229 flow. Second operand has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:20,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:20,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:20,686 INFO L124 PetriNetUnfolderBase]: 485/1458 cut-off events. [2025-03-17 19:39:20,686 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2025-03-17 19:39:20,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2548 conditions, 1458 events. 485/1458 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9535 event pairs, 440 based on Foata normal form. 4/1318 useless extension candidates. Maximal degree in co-relation 2473. Up to 944 conditions per place. [2025-03-17 19:39:20,693 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 46 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2025-03-17 19:39:20,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 100 transitions, 399 flow [2025-03-17 19:39:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 695 transitions. [2025-03-17 19:39:20,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41002949852507375 [2025-03-17 19:39:20,696 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 229 flow. Second operand 15 states and 695 transitions. [2025-03-17 19:39:20,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 100 transitions, 399 flow [2025-03-17 19:39:20,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 100 transitions, 393 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:20,698 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 320 flow [2025-03-17 19:39:20,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=320, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2025-03-17 19:39:20,699 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 23 predicate places. [2025-03-17 19:39:20,699 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 320 flow [2025-03-17 19:39:20,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:20,699 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:20,699 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:20,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:20,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:20,902 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:20,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1744169266, now seen corresponding path program 2 times [2025-03-17 19:39:20,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:20,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90119279] [2025-03-17 19:39:20,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:20,910 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:20,927 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:20,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:20,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:21,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:21,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90119279] [2025-03-17 19:39:21,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90119279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694715010] [2025-03-17 19:39:21,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:21,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:21,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:21,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:39:21,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:21,255 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:21,255 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:21,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:21,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 19:39:21,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:21,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694715010] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:21,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-17 19:39:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362473190] [2025-03-17 19:39:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:21,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:39:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:21,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:39:21,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:39:21,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:21,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 320 flow. Second operand has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:21,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:21,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:21,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:21,817 INFO L124 PetriNetUnfolderBase]: 485/1467 cut-off events. [2025-03-17 19:39:21,818 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-03-17 19:39:21,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 1467 events. 485/1467 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9538 event pairs, 440 based on Foata normal form. 3/1326 useless extension candidates. Maximal degree in co-relation 2408. Up to 944 conditions per place. [2025-03-17 19:39:21,824 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 46 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2025-03-17 19:39:21,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 106 transitions, 508 flow [2025-03-17 19:39:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:39:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:39:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 952 transitions. [2025-03-17 19:39:21,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40117994100294985 [2025-03-17 19:39:21,827 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 320 flow. Second operand 21 states and 952 transitions. [2025-03-17 19:39:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 106 transitions, 508 flow [2025-03-17 19:39:21,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 106 transitions, 498 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:21,830 INFO L231 Difference]: Finished difference. Result has 134 places, 106 transitions, 421 flow [2025-03-17 19:39:21,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=421, PETRI_PLACES=134, PETRI_TRANSITIONS=106} [2025-03-17 19:39:21,831 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 42 predicate places. [2025-03-17 19:39:21,831 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 106 transitions, 421 flow [2025-03-17 19:39:21,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:21,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:21,832 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:21,839 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 19:39:22,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:22,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:22,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1791277106, now seen corresponding path program 3 times [2025-03-17 19:39:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:22,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765602695] [2025-03-17 19:39:22,037 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:39:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:22,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-03-17 19:39:22,112 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:22,112 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 19:39:22,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:22,112 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:39:22,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 19:39:22,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:22,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:22,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:22,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:39:22,158 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:39:22,159 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2025-03-17 19:39:22,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2025-03-17 19:39:22,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2025-03-17 19:39:22,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:39:22,161 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2025-03-17 19:39:22,163 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:39:22,163 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:39:22,195 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:39:22,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 162 transitions, 340 flow [2025-03-17 19:39:22,211 INFO L124 PetriNetUnfolderBase]: 59/273 cut-off events. [2025-03-17 19:39:22,211 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:39:22,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 273 events. 59/273 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1261 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2025-03-17 19:39:22,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 162 transitions, 340 flow [2025-03-17 19:39:22,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 162 transitions, 340 flow [2025-03-17 19:39:22,215 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:22,215 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;@48381504, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:22,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 19:39:22,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:22,217 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:22,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:22,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:22,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:22,217 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:22,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash 826524, now seen corresponding path program 1 times [2025-03-17 19:39:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:22,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988739122] [2025-03-17 19:39:22,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:22,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:22,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:22,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:22,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:22,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988739122] [2025-03-17 19:39:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988739122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417868267] [2025-03-17 19:39:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:22,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:22,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:22,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:22,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:22,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:22,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 162 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:22,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:22,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:22,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:24,797 INFO L124 PetriNetUnfolderBase]: 20921/43350 cut-off events. [2025-03-17 19:39:24,797 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-03-17 19:39:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74649 conditions, 43350 events. 20921/43350 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435084 event pairs, 19440 based on Foata normal form. 7691/46338 useless extension candidates. Maximal degree in co-relation 58580. Up to 31185 conditions per place. [2025-03-17 19:39:24,993 INFO L140 encePairwiseOnDemand]: 126/162 looper letters, 72 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-03-17 19:39:24,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 434 flow [2025-03-17 19:39:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2025-03-17 19:39:24,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2025-03-17 19:39:24,994 INFO L175 Difference]: Start difference. First operand has 131 places, 162 transitions, 340 flow. Second operand 4 states and 344 transitions. [2025-03-17 19:39:24,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 434 flow [2025-03-17 19:39:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 134 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:24,997 INFO L231 Difference]: Finished difference. Result has 136 places, 134 transitions, 304 flow [2025-03-17 19:39:24,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=136, PETRI_TRANSITIONS=134} [2025-03-17 19:39:24,998 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 5 predicate places. [2025-03-17 19:39:24,998 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 304 flow [2025-03-17 19:39:24,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:24,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:24,998 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:24,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:39:24,998 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:24,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1146102634, now seen corresponding path program 1 times [2025-03-17 19:39:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:24,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378909785] [2025-03-17 19:39:24,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:25,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:25,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:25,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:25,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378909785] [2025-03-17 19:39:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378909785] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167879138] [2025-03-17 19:39:25,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:25,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:25,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:25,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:39:25,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:25,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:25,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:25,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:25,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:25,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:25,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:25,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167879138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:25,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320557073] [2025-03-17 19:39:25,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:25,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:25,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:25,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:25,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:25,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:25,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:25,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:25,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:27,505 INFO L124 PetriNetUnfolderBase]: 20921/43349 cut-off events. [2025-03-17 19:39:27,505 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-17 19:39:27,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74659 conditions, 43349 events. 20921/43349 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435090 event pairs, 19440 based on Foata normal form. 1/38647 useless extension candidates. Maximal degree in co-relation 74640. Up to 31180 conditions per place. [2025-03-17 19:39:27,694 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 68 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2025-03-17 19:39:27,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 448 flow [2025-03-17 19:39:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2025-03-17 19:39:27,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2025-03-17 19:39:27,696 INFO L175 Difference]: Start difference. First operand has 136 places, 134 transitions, 304 flow. Second operand 6 states and 429 transitions. [2025-03-17 19:39:27,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 448 flow [2025-03-17 19:39:27,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 133 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:27,699 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 310 flow [2025-03-17 19:39:27,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2025-03-17 19:39:27,701 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 8 predicate places. [2025-03-17 19:39:27,701 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 310 flow [2025-03-17 19:39:27,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:27,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:27,701 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:27,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:27,906 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,SelfDestructingSolverStorable10 [2025-03-17 19:39:27,906 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:27,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1169442559, now seen corresponding path program 1 times [2025-03-17 19:39:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:27,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910439360] [2025-03-17 19:39:27,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:27,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:27,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:27,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:27,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:27,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910439360] [2025-03-17 19:39:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910439360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:27,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:27,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:27,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081088870] [2025-03-17 19:39:27,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:27,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:27,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:27,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:27,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:27,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:27,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:27,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:27,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:30,577 INFO L124 PetriNetUnfolderBase]: 20921/43348 cut-off events. [2025-03-17 19:39:30,577 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2025-03-17 19:39:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74661 conditions, 43348 events. 20921/43348 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435100 event pairs, 19440 based on Foata normal form. 1/38647 useless extension candidates. Maximal degree in co-relation 74636. Up to 31183 conditions per place. [2025-03-17 19:39:30,753 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 69 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2025-03-17 19:39:30,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 132 transitions, 452 flow [2025-03-17 19:39:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2025-03-17 19:39:30,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2025-03-17 19:39:30,756 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 310 flow. Second operand 3 states and 249 transitions. [2025-03-17 19:39:30,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 132 transitions, 452 flow [2025-03-17 19:39:30,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 132 transitions, 430 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:30,759 INFO L231 Difference]: Finished difference. Result has 134 places, 132 transitions, 292 flow [2025-03-17 19:39:30,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=134, PETRI_TRANSITIONS=132} [2025-03-17 19:39:30,760 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 3 predicate places. [2025-03-17 19:39:30,760 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 132 transitions, 292 flow [2025-03-17 19:39:30,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:30,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:30,760 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:30,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:39:30,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:30,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1447434211, now seen corresponding path program 1 times [2025-03-17 19:39:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:30,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528647106] [2025-03-17 19:39:30,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:30,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:30,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:30,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:30,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528647106] [2025-03-17 19:39:30,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528647106] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90894147] [2025-03-17 19:39:30,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:30,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:30,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:30,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:39:30,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:30,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:30,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:30,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:30,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:30,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:30,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90894147] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:30,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:30,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:30,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511907298] [2025-03-17 19:39:30,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:30,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:30,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:30,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:30,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:30,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 132 transitions, 292 flow. Second operand has 10 states, 10 states have (on average 60.3) internal successors, (603), 10 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:30,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:30,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:30,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:33,090 INFO L124 PetriNetUnfolderBase]: 20921/43352 cut-off events. [2025-03-17 19:39:33,090 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2025-03-17 19:39:33,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74664 conditions, 43352 events. 20921/43352 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435029 event pairs, 19440 based on Foata normal form. 2/38653 useless extension candidates. Maximal degree in co-relation 74629. Up to 31181 conditions per place. [2025-03-17 19:39:33,270 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 69 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2025-03-17 19:39:33,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 135 transitions, 459 flow [2025-03-17 19:39:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 491 transitions. [2025-03-17 19:39:33,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329805996472663 [2025-03-17 19:39:33,272 INFO L175 Difference]: Start difference. First operand has 134 places, 132 transitions, 292 flow. Second operand 7 states and 491 transitions. [2025-03-17 19:39:33,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 135 transitions, 459 flow [2025-03-17 19:39:33,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:33,274 INFO L231 Difference]: Finished difference. Result has 140 places, 135 transitions, 318 flow [2025-03-17 19:39:33,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=140, PETRI_TRANSITIONS=135} [2025-03-17 19:39:33,274 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 9 predicate places. [2025-03-17 19:39:33,274 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 135 transitions, 318 flow [2025-03-17 19:39:33,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 60.3) internal successors, (603), 10 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:33,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:33,275 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:33,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:33,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:33,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:33,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash 727715235, now seen corresponding path program 2 times [2025-03-17 19:39:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928681863] [2025-03-17 19:39:33,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:33,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:33,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:33,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:33,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928681863] [2025-03-17 19:39:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928681863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:33,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:33,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388732296] [2025-03-17 19:39:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:33,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:33,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:33,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:33,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2025-03-17 19:39:33,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 135 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:33,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:33,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2025-03-17 19:39:33,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:36,435 INFO L124 PetriNetUnfolderBase]: 23017/45871 cut-off events. [2025-03-17 19:39:36,436 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-03-17 19:39:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80566 conditions, 45871 events. 23017/45871 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 450361 event pairs, 11716 based on Foata normal form. 21/40755 useless extension candidates. Maximal degree in co-relation 80526. Up to 34500 conditions per place. [2025-03-17 19:39:36,616 INFO L140 encePairwiseOnDemand]: 156/162 looper letters, 119 selfloop transitions, 3 changer transitions 0/178 dead transitions. [2025-03-17 19:39:36,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 178 transitions, 648 flow [2025-03-17 19:39:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2025-03-17 19:39:36,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2025-03-17 19:39:36,617 INFO L175 Difference]: Start difference. First operand has 140 places, 135 transitions, 318 flow. Second operand 4 states and 352 transitions. [2025-03-17 19:39:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 178 transitions, 648 flow [2025-03-17 19:39:36,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 178 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:36,620 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 338 flow [2025-03-17 19:39:36,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2025-03-17 19:39:36,620 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 12 predicate places. [2025-03-17 19:39:36,620 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 338 flow [2025-03-17 19:39:36,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:36,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:36,621 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:36,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:39:36,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:36,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash -743980508, now seen corresponding path program 1 times [2025-03-17 19:39:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:36,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427865524] [2025-03-17 19:39:36,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:36,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:39:36,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:39:36,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:36,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427865524] [2025-03-17 19:39:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427865524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850221858] [2025-03-17 19:39:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:36,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:36,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:36,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:36,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:36,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:36,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:36,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:36,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:39,091 INFO L124 PetriNetUnfolderBase]: 21407/40320 cut-off events. [2025-03-17 19:39:39,092 INFO L125 PetriNetUnfolderBase]: For 1134/2063 co-relation queries the response was YES. [2025-03-17 19:39:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73580 conditions, 40320 events. 21407/40320 cut-off events. For 1134/2063 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 384813 event pairs, 440 based on Foata normal form. 526/37106 useless extension candidates. Maximal degree in co-relation 73539. Up to 28198 conditions per place. [2025-03-17 19:39:39,269 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 167 selfloop transitions, 3 changer transitions 0/228 dead transitions. [2025-03-17 19:39:39,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 228 transitions, 890 flow [2025-03-17 19:39:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2025-03-17 19:39:39,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2025-03-17 19:39:39,271 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 338 flow. Second operand 4 states and 399 transitions. [2025-03-17 19:39:39,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 228 transitions, 890 flow [2025-03-17 19:39:39,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 228 transitions, 886 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:39,275 INFO L231 Difference]: Finished difference. Result has 144 places, 136 transitions, 340 flow [2025-03-17 19:39:39,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=144, PETRI_TRANSITIONS=136} [2025-03-17 19:39:39,275 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 13 predicate places. [2025-03-17 19:39:39,276 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 136 transitions, 340 flow [2025-03-17 19:39:39,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:39,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:39,276 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:39,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:39:39,276 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:39,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1588558467, now seen corresponding path program 1 times [2025-03-17 19:39:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:39,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142519809] [2025-03-17 19:39:39,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:39,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:39,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:39,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:39,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:39,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:39,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142519809] [2025-03-17 19:39:39,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142519809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:39,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:39,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:39,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705571325] [2025-03-17 19:39:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:39,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:39,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:39,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:39,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:39,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 136 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:39,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:39,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:39,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:42,044 INFO L124 PetriNetUnfolderBase]: 20832/43216 cut-off events. [2025-03-17 19:39:42,044 INFO L125 PetriNetUnfolderBase]: For 2470/3346 co-relation queries the response was YES. [2025-03-17 19:39:42,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76949 conditions, 43216 events. 20832/43216 cut-off events. For 2470/3346 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 433753 event pairs, 16531 based on Foata normal form. 525/39567 useless extension candidates. Maximal degree in co-relation 76908. Up to 26785 conditions per place. [2025-03-17 19:39:42,263 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 166 selfloop transitions, 3 changer transitions 0/227 dead transitions. [2025-03-17 19:39:42,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 888 flow [2025-03-17 19:39:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2025-03-17 19:39:42,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6141975308641975 [2025-03-17 19:39:42,265 INFO L175 Difference]: Start difference. First operand has 144 places, 136 transitions, 340 flow. Second operand 4 states and 398 transitions. [2025-03-17 19:39:42,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 888 flow [2025-03-17 19:39:42,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 227 transitions, 882 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:42,272 INFO L231 Difference]: Finished difference. Result has 143 places, 135 transitions, 338 flow [2025-03-17 19:39:42,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=143, PETRI_TRANSITIONS=135} [2025-03-17 19:39:42,273 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 12 predicate places. [2025-03-17 19:39:42,274 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 135 transitions, 338 flow [2025-03-17 19:39:42,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:42,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:42,274 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:42,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:39:42,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:42,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1609723250, now seen corresponding path program 1 times [2025-03-17 19:39:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702946188] [2025-03-17 19:39:42,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:42,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:42,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:42,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:42,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:42,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702946188] [2025-03-17 19:39:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702946188] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807443483] [2025-03-17 19:39:42,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:42,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:42,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:39:42,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:39:42,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:42,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:42,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:42,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:42,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:42,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:42,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:42,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807443483] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:42,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:42,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652438082] [2025-03-17 19:39:42,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:42,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:42,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:42,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:42,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:42,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:42,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 135 transitions, 338 flow. Second operand has 18 states, 18 states have (on average 60.27777777777778) internal successors, (1085), 18 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:42,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:42,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:42,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:45,611 INFO L124 PetriNetUnfolderBase]: 20919/43590 cut-off events. [2025-03-17 19:39:45,611 INFO L125 PetriNetUnfolderBase]: For 2583/3453 co-relation queries the response was YES. [2025-03-17 19:39:45,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77419 conditions, 43590 events. 20919/43590 cut-off events. For 2583/3453 co-relation queries the response was YES. Maximal size of possible extension queue 1171. Compared 438877 event pairs, 19440 based on Foata normal form. 22/39264 useless extension candidates. Maximal degree in co-relation 77342. Up to 31203 conditions per place. [2025-03-17 19:39:45,803 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 70 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2025-03-17 19:39:45,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 143 transitions, 556 flow [2025-03-17 19:39:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 973 transitions. [2025-03-17 19:39:45,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40041152263374485 [2025-03-17 19:39:45,806 INFO L175 Difference]: Start difference. First operand has 143 places, 135 transitions, 338 flow. Second operand 15 states and 973 transitions. [2025-03-17 19:39:45,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 143 transitions, 556 flow [2025-03-17 19:39:45,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 143 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:45,809 INFO L231 Difference]: Finished difference. Result has 158 places, 143 transitions, 429 flow [2025-03-17 19:39:45,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=429, PETRI_PLACES=158, PETRI_TRANSITIONS=143} [2025-03-17 19:39:45,810 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 27 predicate places. [2025-03-17 19:39:45,810 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 143 transitions, 429 flow [2025-03-17 19:39:45,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 60.27777777777778) internal successors, (1085), 18 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:45,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:45,810 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:45,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:39:46,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:46,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:46,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1150394866, now seen corresponding path program 2 times [2025-03-17 19:39:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:46,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775849085] [2025-03-17 19:39:46,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:46,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-03-17 19:39:46,026 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 32 statements. [2025-03-17 19:39:46,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:46,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:46,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775849085] [2025-03-17 19:39:46,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775849085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:46,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:39:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321688979] [2025-03-17 19:39:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:46,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:46,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:46,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:39:46,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2025-03-17 19:39:46,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 143 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:46,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:46,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2025-03-17 19:39:46,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:48,971 INFO L124 PetriNetUnfolderBase]: 21731/41748 cut-off events. [2025-03-17 19:39:48,971 INFO L125 PetriNetUnfolderBase]: For 1878/1878 co-relation queries the response was YES. [2025-03-17 19:39:49,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76592 conditions, 41748 events. 21731/41748 cut-off events. For 1878/1878 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 401027 event pairs, 819 based on Foata normal form. 441/38439 useless extension candidates. Maximal degree in co-relation 76491. Up to 26688 conditions per place. [2025-03-17 19:39:49,225 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 203 selfloop transitions, 6 changer transitions 0/263 dead transitions. [2025-03-17 19:39:49,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 263 transitions, 1085 flow [2025-03-17 19:39:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2025-03-17 19:39:49,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5606995884773662 [2025-03-17 19:39:49,227 INFO L175 Difference]: Start difference. First operand has 158 places, 143 transitions, 429 flow. Second operand 6 states and 545 transitions. [2025-03-17 19:39:49,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 263 transitions, 1085 flow [2025-03-17 19:39:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 263 transitions, 1075 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:49,231 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 427 flow [2025-03-17 19:39:49,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2025-03-17 19:39:49,232 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 27 predicate places. [2025-03-17 19:39:49,232 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 427 flow [2025-03-17 19:39:49,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:49,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:49,232 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:49,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:39:49,233 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:49,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1302503217, now seen corresponding path program 1 times [2025-03-17 19:39:49,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:49,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852308359] [2025-03-17 19:39:49,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:49,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:49,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:39:49,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:39:49,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:49,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852308359] [2025-03-17 19:39:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852308359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:49,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:49,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837437309] [2025-03-17 19:39:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:49,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:49,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:49,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:49,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2025-03-17 19:39:49,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:49,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:49,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2025-03-17 19:39:49,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:51,973 INFO L124 PetriNetUnfolderBase]: 21290/40509 cut-off events. [2025-03-17 19:39:51,973 INFO L125 PetriNetUnfolderBase]: For 3442/3442 co-relation queries the response was YES. [2025-03-17 19:39:52,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75471 conditions, 40509 events. 21290/40509 cut-off events. For 3442/3442 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 382705 event pairs, 1280 based on Foata normal form. 441/37801 useless extension candidates. Maximal degree in co-relation 75374. Up to 28410 conditions per place. [2025-03-17 19:39:52,400 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 162 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2025-03-17 19:39:52,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 222 transitions, 921 flow [2025-03-17 19:39:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2025-03-17 19:39:52,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.595679012345679 [2025-03-17 19:39:52,402 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 427 flow. Second operand 4 states and 386 transitions. [2025-03-17 19:39:52,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 222 transitions, 921 flow [2025-03-17 19:39:52,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 222 transitions, 905 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:39:52,435 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 427 flow [2025-03-17 19:39:52,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2025-03-17 19:39:52,435 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 25 predicate places. [2025-03-17 19:39:52,435 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 427 flow [2025-03-17 19:39:52,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:52,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:52,436 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:52,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:39:52,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:52,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:52,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1725665907, now seen corresponding path program 1 times [2025-03-17 19:39:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894346838] [2025-03-17 19:39:52,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:52,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:52,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 19:39:52,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 19:39:52,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:52,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:52,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:52,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894346838] [2025-03-17 19:39:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894346838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:52,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:52,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:52,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128109232] [2025-03-17 19:39:52,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:52,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:52,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:52,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:52,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:52,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:52,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:52,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:52,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:55,205 INFO L124 PetriNetUnfolderBase]: 21406/40544 cut-off events. [2025-03-17 19:39:55,206 INFO L125 PetriNetUnfolderBase]: For 4069/4069 co-relation queries the response was YES. [2025-03-17 19:39:55,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74840 conditions, 40544 events. 21406/40544 cut-off events. For 4069/4069 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 379971 event pairs, 900 based on Foata normal form. 487/37270 useless extension candidates. Maximal degree in co-relation 74745. Up to 27381 conditions per place. [2025-03-17 19:39:55,639 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 172 selfloop transitions, 3 changer transitions 0/229 dead transitions. [2025-03-17 19:39:55,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 229 transitions, 975 flow [2025-03-17 19:39:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2025-03-17 19:39:55,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6126543209876543 [2025-03-17 19:39:55,640 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 427 flow. Second operand 4 states and 397 transitions. [2025-03-17 19:39:55,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 229 transitions, 975 flow [2025-03-17 19:39:55,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 229 transitions, 963 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:55,643 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 423 flow [2025-03-17 19:39:55,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=423, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2025-03-17 19:39:55,644 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 25 predicate places. [2025-03-17 19:39:55,644 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 423 flow [2025-03-17 19:39:55,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:55,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:55,644 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:55,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:39:55,644 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:55,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1499751408, now seen corresponding path program 1 times [2025-03-17 19:39:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134408024] [2025-03-17 19:39:55,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:55,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:55,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 19:39:55,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:39:55,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:55,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:55,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134408024] [2025-03-17 19:39:55,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134408024] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327559931] [2025-03-17 19:39:55,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:55,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:55,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:55,930 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 19:39:55,931 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 19:39:55,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 19:39:56,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:39:56,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:56,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:56,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 19:39:56,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:56,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327559931] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:56,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-17 19:39:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700609298] [2025-03-17 19:39:56,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:56,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:39:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:56,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:39:56,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:39:56,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:56,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 423 flow. Second operand has 23 states, 23 states have (on average 60.52173913043478) internal successors, (1392), 23 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:56,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:56,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:56,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:59,315 INFO L124 PetriNetUnfolderBase]: 20961/43634 cut-off events. [2025-03-17 19:39:59,315 INFO L125 PetriNetUnfolderBase]: For 3930/3930 co-relation queries the response was YES. [2025-03-17 19:39:59,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77999 conditions, 43634 events. 20961/43634 cut-off events. For 3930/3930 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 439037 event pairs, 19501 based on Foata normal form. 3/39329 useless extension candidates. Maximal degree in co-relation 77867. Up to 31295 conditions per place. [2025-03-17 19:39:59,554 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 71 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2025-03-17 19:39:59,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 147 transitions, 661 flow [2025-03-17 19:39:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:39:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:39:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1332 transitions. [2025-03-17 19:39:59,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2025-03-17 19:39:59,556 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 423 flow. Second operand 21 states and 1332 transitions. [2025-03-17 19:39:59,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 147 transitions, 661 flow [2025-03-17 19:39:59,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 147 transitions, 655 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:59,562 INFO L231 Difference]: Finished difference. Result has 176 places, 147 transitions, 528 flow [2025-03-17 19:39:59,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=528, PETRI_PLACES=176, PETRI_TRANSITIONS=147} [2025-03-17 19:39:59,562 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 45 predicate places. [2025-03-17 19:39:59,562 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 147 transitions, 528 flow [2025-03-17 19:39:59,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 60.52173913043478) internal successors, (1392), 23 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:59,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:59,563 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:59,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:59,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-17 19:39:59,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:59,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -512272822, now seen corresponding path program 2 times [2025-03-17 19:39:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939946824] [2025-03-17 19:39:59,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:59,774 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-17 19:39:59,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-17 19:39:59,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:59,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat