./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:06:08,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:06:08,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:06:08,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:06:08,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:06:08,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:06:08,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:06:08,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:06:08,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:06:08,806 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:06:08,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:06:08,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:06:08,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:06:08,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:06:08,807 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:06:08,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:06:08,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:06:08,807 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:06:08,808 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:06:08,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:06:08,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:06:08,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:06:08,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:06:08,810 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-jdk21/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 -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2025-02-08 14:06:09,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:06:09,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:06:09,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:06:09,115 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:06:09,115 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:06:09,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2025-02-08 14:06:10,385 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0490c2a13/7482b032df704130afde6458167aaeef/FLAGd536bc58c [2025-02-08 14:06:10,725 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:06:10,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2025-02-08 14:06:10,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0490c2a13/7482b032df704130afde6458167aaeef/FLAGd536bc58c [2025-02-08 14:06:10,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0490c2a13/7482b032df704130afde6458167aaeef [2025-02-08 14:06:10,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:06:10,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:06:10,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:06:10,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:06:10,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:06:10,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:06:10" (1/1) ... [2025-02-08 14:06:10,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593a7904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:10, skipping insertion in model container [2025-02-08 14:06:10,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:06:10" (1/1) ... [2025-02-08 14:06:10,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:06:11,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:06:11,102 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:06:11,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:06:11,203 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:06:11,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11 WrapperNode [2025-02-08 14:06:11,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:06:11,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:06:11,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:06:11,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:06:11,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,241 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 150 [2025-02-08 14:06:11,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:06:11,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:06:11,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:06:11,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:06:11,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,267 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 2, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 0, 5, 5]. The 1 writes are split as follows [0, 0, 1, 0, 0]. [2025-02-08 14:06:11,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,276 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:06:11,284 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:06:11,284 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:06:11,284 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:06:11,285 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (1/1) ... [2025-02-08 14:06:11,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:06:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:11,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:06:11,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:06:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:06:11,333 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:06:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:06:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 14:06:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:06:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:06:11,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:06:11,335 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:06:11,462 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:06:11,464 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:06:11,753 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-08 14:06:11,753 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-08 14:06:11,847 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:06:11,847 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:06:12,069 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:06:12,069 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:06:12,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:06:12 BoogieIcfgContainer [2025-02-08 14:06:12,070 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:06:12,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:06:12,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:06:12,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:06:12,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:06:10" (1/3) ... [2025-02-08 14:06:12,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f54e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:06:12, skipping insertion in model container [2025-02-08 14:06:12,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:11" (2/3) ... [2025-02-08 14:06:12,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f54e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:06:12, skipping insertion in model container [2025-02-08 14:06:12,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:06:12" (3/3) ... [2025-02-08 14:06:12,081 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2025-02-08 14:06:12,095 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:06:12,097 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_42-trylock2_racefree.i that has 2 procedures, 107 locations, 1 initial locations, 13 loop locations, and 12 error locations. [2025-02-08 14:06:12,097 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:06:12,154 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:06:12,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 130 transitions, 267 flow [2025-02-08 14:06:12,262 INFO L124 PetriNetUnfolderBase]: 33/181 cut-off events. [2025-02-08 14:06:12,264 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:06:12,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 33/181 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 788 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2025-02-08 14:06:12,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 130 transitions, 267 flow [2025-02-08 14:06:12,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 129 transitions, 265 flow [2025-02-08 14:06:12,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:12,304 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;@336c160c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:12,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 14:06:12,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:12,314 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:06:12,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:12,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:12,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:06:12,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:06:12,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash 582503927, now seen corresponding path program 1 times [2025-02-08 14:06:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521349678] [2025-02-08 14:06:12,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:12,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:12,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:06:12,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:06:12,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:12,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521349678] [2025-02-08 14:06:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521349678] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47304364] [2025-02-08 14:06:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:12,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:12,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:12,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:12,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 130 [2025-02-08 14:06:12,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 129 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2025-02-08 14:06:12,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:12,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 130 [2025-02-08 14:06:12,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:13,272 INFO L124 PetriNetUnfolderBase]: 589/1863 cut-off events. [2025-02-08 14:06:13,273 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:06:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 1863 events. 589/1863 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 11865 event pairs, 400 based on Foata normal form. 565/2286 useless extension candidates. Maximal degree in co-relation 3047. Up to 1136 conditions per place. [2025-02-08 14:06:13,289 INFO L140 encePairwiseOnDemand]: 103/130 looper letters, 91 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2025-02-08 14:06:13,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 149 transitions, 493 flow [2025-02-08 14:06:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2025-02-08 14:06:13,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6961538461538461 [2025-02-08 14:06:13,310 INFO L175 Difference]: Start difference. First operand has 110 places, 129 transitions, 265 flow. Second operand 4 states and 362 transitions. [2025-02-08 14:06:13,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 149 transitions, 493 flow [2025-02-08 14:06:13,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 149 transitions, 493 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:06:13,322 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 229 flow [2025-02-08 14:06:13,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2025-02-08 14:06:13,330 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2025-02-08 14:06:13,331 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 229 flow [2025-02-08 14:06:13,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2025-02-08 14:06:13,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:13,331 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:13,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:06:13,332 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:06:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1707148428, now seen corresponding path program 1 times [2025-02-08 14:06:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180328095] [2025-02-08 14:06:13,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:13,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:06:13,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:06:13,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:13,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:13,372 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:06:13,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:06:13,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:06:13,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:13,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:13,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:06:13,414 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:06:13,415 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-08 14:06:13,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-02-08 14:06:13,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-02-08 14:06:13,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-02-08 14:06:13,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-02-08 14:06:13,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-02-08 14:06:13,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-02-08 14:06:13,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-02-08 14:06:13,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-02-08 14:06:13,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-02-08 14:06:13,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-02-08 14:06:13,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:06:13,421 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 14:06:13,423 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:06:13,424 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:06:13,475 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:06:13,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 197 transitions, 410 flow [2025-02-08 14:06:13,528 INFO L124 PetriNetUnfolderBase]: 57/318 cut-off events. [2025-02-08 14:06:13,528 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:06:13,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 318 events. 57/318 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1630 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2025-02-08 14:06:13,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 197 transitions, 410 flow [2025-02-08 14:06:13,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 197 transitions, 410 flow [2025-02-08 14:06:13,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:13,539 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;@336c160c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:13,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-02-08 14:06:13,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:13,543 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:06:13,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:13,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:13,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:06:13,544 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-08 14:06:13,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 770564477, now seen corresponding path program 1 times [2025-02-08 14:06:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278746508] [2025-02-08 14:06:13,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:13,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:06:13,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:06:13,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:13,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:13,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:13,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278746508] [2025-02-08 14:06:13,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278746508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:13,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:13,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808363342] [2025-02-08 14:06:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:13,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:13,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:13,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:13,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 197 [2025-02-08 14:06:13,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 197 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2025-02-08 14:06:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:13,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 197 [2025-02-08 14:06:13,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:19,898 INFO L124 PetriNetUnfolderBase]: 28459/61017 cut-off events. [2025-02-08 14:06:19,898 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-02-08 14:06:20,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104758 conditions, 61017 events. 28459/61017 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 635639 event pairs, 13482 based on Foata normal form. 20789/77222 useless extension candidates. Maximal degree in co-relation 4668. Up to 43557 conditions per place. [2025-02-08 14:06:20,327 INFO L140 encePairwiseOnDemand]: 158/197 looper letters, 119 selfloop transitions, 3 changer transitions 0/209 dead transitions. [2025-02-08 14:06:20,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 209 transitions, 678 flow [2025-02-08 14:06:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 530 transitions. [2025-02-08 14:06:20,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6725888324873096 [2025-02-08 14:06:20,332 INFO L175 Difference]: Start difference. First operand has 166 places, 197 transitions, 410 flow. Second operand 4 states and 530 transitions. [2025-02-08 14:06:20,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 209 transitions, 678 flow [2025-02-08 14:06:20,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 209 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:06:20,342 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 368 flow [2025-02-08 14:06:20,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2025-02-08 14:06:20,344 INFO L279 CegarLoopForPetriNet]: 166 programPoint places, 5 predicate places. [2025-02-08 14:06:20,345 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 368 flow [2025-02-08 14:06:20,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2025-02-08 14:06:20,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:20,346 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:20,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:06:20,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-08 14:06:20,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:20,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1874828951, now seen corresponding path program 1 times [2025-02-08 14:06:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:20,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127304844] [2025-02-08 14:06:20,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:20,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:20,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:06:20,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:06:20,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:20,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127304844] [2025-02-08 14:06:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127304844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:20,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:20,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:06:20,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311289985] [2025-02-08 14:06:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:20,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:20,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:20,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:06:20,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 197 [2025-02-08 14:06:20,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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) [2025-02-08 14:06:20,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:20,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 197 [2025-02-08 14:06:20,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:25,064 INFO L124 PetriNetUnfolderBase]: 27535/53119 cut-off events. [2025-02-08 14:06:25,065 INFO L125 PetriNetUnfolderBase]: For 1584/1584 co-relation queries the response was YES. [2025-02-08 14:06:25,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97084 conditions, 53119 events. 27535/53119 cut-off events. For 1584/1584 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 514659 event pairs, 924 based on Foata normal form. 484/51507 useless extension candidates. Maximal degree in co-relation 4440. Up to 35067 conditions per place. [2025-02-08 14:06:25,327 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 199 selfloop transitions, 6 changer transitions 0/292 dead transitions. [2025-02-08 14:06:25,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 292 transitions, 1028 flow [2025-02-08 14:06:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 728 transitions. [2025-02-08 14:06:25,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6159052453468697 [2025-02-08 14:06:25,331 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 368 flow. Second operand 6 states and 728 transitions. [2025-02-08 14:06:25,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 292 transitions, 1028 flow [2025-02-08 14:06:25,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 292 transitions, 1026 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:25,342 INFO L231 Difference]: Finished difference. Result has 174 places, 165 transitions, 374 flow [2025-02-08 14:06:25,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=174, PETRI_TRANSITIONS=165} [2025-02-08 14:06:25,346 INFO L279 CegarLoopForPetriNet]: 166 programPoint places, 8 predicate places. [2025-02-08 14:06:25,346 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 165 transitions, 374 flow [2025-02-08 14:06:25,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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) [2025-02-08 14:06:25,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:25,347 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:06:25,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:06:25,347 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-08 14:06:25,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2009843929, now seen corresponding path program 1 times [2025-02-08 14:06:25,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:25,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957097761] [2025-02-08 14:06:25,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:25,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:25,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:06:25,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:06:25,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:25,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957097761] [2025-02-08 14:06:25,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957097761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:25,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:25,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719323159] [2025-02-08 14:06:25,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:25,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:25,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:25,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:25,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 197 [2025-02-08 14:06:25,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 165 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2025-02-08 14:06:25,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:25,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 197 [2025-02-08 14:06:25,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:29,066 INFO L124 PetriNetUnfolderBase]: 26611/51100 cut-off events. [2025-02-08 14:06:29,066 INFO L125 PetriNetUnfolderBase]: For 3692/3692 co-relation queries the response was YES. [2025-02-08 14:06:29,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94670 conditions, 51100 events. 26611/51100 cut-off events. For 3692/3692 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 491000 event pairs, 1407 based on Foata normal form. 484/50268 useless extension candidates. Maximal degree in co-relation 82936. Up to 36518 conditions per place. [2025-02-08 14:06:29,305 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 156 selfloop transitions, 6 changer transitions 0/249 dead transitions. [2025-02-08 14:06:29,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 249 transitions, 864 flow [2025-02-08 14:06:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:29,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2025-02-08 14:06:29,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6459390862944162 [2025-02-08 14:06:29,308 INFO L175 Difference]: Start difference. First operand has 174 places, 165 transitions, 374 flow. Second operand 4 states and 509 transitions. [2025-02-08 14:06:29,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 249 transitions, 864 flow [2025-02-08 14:06:29,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 249 transitions, 848 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 14:06:29,374 INFO L231 Difference]: Finished difference. Result has 172 places, 165 transitions, 374 flow [2025-02-08 14:06:29,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=172, PETRI_TRANSITIONS=165} [2025-02-08 14:06:29,375 INFO L279 CegarLoopForPetriNet]: 166 programPoint places, 6 predicate places. [2025-02-08 14:06:29,376 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 165 transitions, 374 flow [2025-02-08 14:06:29,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2025-02-08 14:06:29,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:29,377 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:29,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:06:29,377 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-08 14:06:29,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 59100799, now seen corresponding path program 1 times [2025-02-08 14:06:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279408856] [2025-02-08 14:06:29,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:29,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:06:29,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:06:29,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:29,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279408856] [2025-02-08 14:06:29,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279408856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:29,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:29,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617033231] [2025-02-08 14:06:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:29,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:29,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:29,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:29,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:29,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 197 [2025-02-08 14:06:29,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 165 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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) [2025-02-08 14:06:29,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:29,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 197 [2025-02-08 14:06:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:36,038 INFO L124 PetriNetUnfolderBase]: 49861/104666 cut-off events. [2025-02-08 14:06:36,039 INFO L125 PetriNetUnfolderBase]: For 4641/4641 co-relation queries the response was YES. [2025-02-08 14:06:36,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183160 conditions, 104666 events. 49861/104666 cut-off events. For 4641/4641 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 1166165 event pairs, 12342 based on Foata normal form. 1004/98964 useless extension candidates. Maximal degree in co-relation 163847. Up to 42027 conditions per place. [2025-02-08 14:06:36,637 INFO L140 encePairwiseOnDemand]: 186/197 looper letters, 235 selfloop transitions, 16 changer transitions 0/338 dead transitions. [2025-02-08 14:06:36,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 338 transitions, 1281 flow [2025-02-08 14:06:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:06:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:06:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 691 transitions. [2025-02-08 14:06:36,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7015228426395939 [2025-02-08 14:06:36,640 INFO L175 Difference]: Start difference. First operand has 172 places, 165 transitions, 374 flow. Second operand 5 states and 691 transitions. [2025-02-08 14:06:36,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 338 transitions, 1281 flow [2025-02-08 14:06:36,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 338 transitions, 1265 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:36,648 INFO L231 Difference]: Finished difference. Result has 178 places, 180 transitions, 492 flow [2025-02-08 14:06:36,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=178, PETRI_TRANSITIONS=180} [2025-02-08 14:06:36,649 INFO L279 CegarLoopForPetriNet]: 166 programPoint places, 12 predicate places. [2025-02-08 14:06:36,649 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 180 transitions, 492 flow [2025-02-08 14:06:36,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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) [2025-02-08 14:06:36,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:36,650 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-08 14:06:36,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:06:36,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-08 14:06:36,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1275292754, now seen corresponding path program 1 times [2025-02-08 14:06:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727967287] [2025-02-08 14:06:36,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:36,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:06:36,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:06:36,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:36,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:36,675 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:06:36,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:06:36,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:06:36,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:36,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:36,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:06:36,703 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:06:36,704 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-02-08 14:06:36,704 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-02-08 14:06:36,704 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-02-08 14:06:36,704 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-02-08 14:06:36,704 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-02-08 14:06:36,704 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-02-08 14:06:36,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-02-08 14:06:36,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-02-08 14:06:36,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-02-08 14:06:36,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-02-08 14:06:36,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-02-08 14:06:36,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-02-08 14:06:36,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-02-08 14:06:36,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-02-08 14:06:36,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-02-08 14:06:36,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-02-08 14:06:36,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-02-08 14:06:36,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-02-08 14:06:36,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-02-08 14:06:36,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-02-08 14:06:36,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-02-08 14:06:36,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:06:36,709 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-08 14:06:36,710 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:06:36,710 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:06:36,761 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:06:36,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 264 transitions, 555 flow [2025-02-08 14:06:36,822 INFO L124 PetriNetUnfolderBase]: 84/474 cut-off events. [2025-02-08 14:06:36,822 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-08 14:06:36,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 474 events. 84/474 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2590 event pairs, 1 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 333. Up to 12 conditions per place. [2025-02-08 14:06:36,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 264 transitions, 555 flow [2025-02-08 14:06:36,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 264 transitions, 555 flow [2025-02-08 14:06:36,837 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:36,837 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;@336c160c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:36,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-02-08 14:06:36,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:36,839 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 14:06:36,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:36,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:36,840 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:06:36,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:06:36,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1022563462, now seen corresponding path program 1 times [2025-02-08 14:06:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455492508] [2025-02-08 14:06:36,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:36,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:06:36,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:06:36,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:36,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:36,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455492508] [2025-02-08 14:06:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455492508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:36,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:36,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017248709] [2025-02-08 14:06:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:36,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:36,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:36,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:36,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 264 [2025-02-08 14:06:36,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 264 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 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) [2025-02-08 14:06:36,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:36,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 264 [2025-02-08 14:06:36,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand