./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 798a7b37 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_42-trylock2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:22:13,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:22:13,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:22:13,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:22:13,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:22:13,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:22:13,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:22:13,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:22:13,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:22:13,963 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:22:13,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:22:13,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:22:13,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:22:13,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:22:13,964 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:22:13,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:22:13,965 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:22:13,966 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:22:13,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:22:13,966 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:22:13,966 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:22:13,966 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:22:13,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:22:13,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:22:13,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:22:13,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:22:13,967 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 -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2025-03-04 15:22:14,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:22:14,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:22:14,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:22:14,203 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:22:14,203 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:22:14,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2025-03-04 15:22:15,361 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dede654be/a818b8488a81424a89e9b4b89be02f6a/FLAG9a2866d60 [2025-03-04 15:22:15,627 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:22:15,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2025-03-04 15:22:15,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dede654be/a818b8488a81424a89e9b4b89be02f6a/FLAG9a2866d60 [2025-03-04 15:22:15,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dede654be/a818b8488a81424a89e9b4b89be02f6a [2025-03-04 15:22:15,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:22:15,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:22:15,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:22:15,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:22:15,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:22:15,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:22:15" (1/1) ... [2025-03-04 15:22:15,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215d5655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:15, skipping insertion in model container [2025-03-04 15:22:15,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:22:15" (1/1) ... [2025-03-04 15:22:15,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:22:16,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:22:16,215 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:22:16,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:22:16,289 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:22:16,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16 WrapperNode [2025-03-04 15:22:16,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:22:16,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:22:16,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:22:16,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:22:16,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,326 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 150 [2025-03-04 15:22:16,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:22:16,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:22:16,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:22:16,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:22:16,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,352 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 5, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2025-03-04 15:22:16,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,358 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:22:16,366 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:22:16,366 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:22:16,366 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:22:16,367 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (1/1) ... [2025-03-04 15:22:16,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:22:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:16,394 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) [2025-03-04 15:22:16,396 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 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 15:22:16,415 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 15:22:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:22:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:22:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:22:16,417 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:22:16,505 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:22:16,506 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:22:16,695 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-04 15:22:16,695 INFO L1325 $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 [2025-03-04 15:22:16,761 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:22:16,762 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:22:16,898 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:22:16,898 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:22:16,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:22:16 BoogieIcfgContainer [2025-03-04 15:22:16,899 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:22:16,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:22:16,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:22:16,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:22:16,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:22:15" (1/3) ... [2025-03-04 15:22:16,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95ab5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:22:16, skipping insertion in model container [2025-03-04 15:22:16,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:16" (2/3) ... [2025-03-04 15:22:16,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95ab5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:22:16, skipping insertion in model container [2025-03-04 15:22:16,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:22:16" (3/3) ... [2025-03-04 15:22:16,906 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2025-03-04 15:22:16,917 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:22:16,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_42-trylock2_racefree.i that has 2 procedures, 96 locations, 1 initial locations, 11 loop locations, and 12 error locations. [2025-03-04 15:22:16,920 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:22:16,961 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 15:22:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 119 transitions, 245 flow [2025-03-04 15:22:17,036 INFO L124 PetriNetUnfolderBase]: 33/165 cut-off events. [2025-03-04 15:22:17,038 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:22:17,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 165 events. 33/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 683 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2025-03-04 15:22:17,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 119 transitions, 245 flow [2025-03-04 15:22:17,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 118 transitions, 243 flow [2025-03-04 15:22:17,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:22:17,078 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;@693673fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:22:17,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-04 15:22:17,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:22:17,083 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-04 15:22:17,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:22:17,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:17,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:22:17,084 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)] === [2025-03-04 15:22:17,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash 537016647, now seen corresponding path program 1 times [2025-03-04 15:22:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011330537] [2025-03-04 15:22:17,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:17,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:17,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:22:17,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:22:17,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:17,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:17,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011330537] [2025-03-04 15:22:17,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011330537] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:17,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:17,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783806005] [2025-03-04 15:22:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:17,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:17,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:17,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:17,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2025-03-04 15:22:17,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2025-03-04 15:22:17,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:17,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2025-03-04 15:22:17,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:17,747 INFO L124 PetriNetUnfolderBase]: 589/1524 cut-off events. [2025-03-04 15:22:17,747 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:22:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1524 events. 589/1524 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9370 event pairs, 0 based on Foata normal form. 278/1731 useless extension candidates. Maximal degree in co-relation 2676. Up to 1120 conditions per place. [2025-03-04 15:22:17,758 INFO L140 encePairwiseOnDemand]: 92/119 looper letters, 91 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2025-03-04 15:22:17,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 138 transitions, 471 flow [2025-03-04 15:22:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:22:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:22:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2025-03-04 15:22:17,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6680672268907563 [2025-03-04 15:22:17,770 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 243 flow. Second operand 4 states and 318 transitions. [2025-03-04 15:22:17,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 138 transitions, 471 flow [2025-03-04 15:22:17,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 138 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:22:17,802 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 207 flow [2025-03-04 15:22:17,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2025-03-04 15:22:17,806 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2025-03-04 15:22:17,807 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 207 flow [2025-03-04 15:22:17,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2025-03-04 15:22:17,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:17,808 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:17,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:22:17,809 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)] === [2025-03-04 15:22:17,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash -489774522, now seen corresponding path program 1 times [2025-03-04 15:22:17,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:17,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811851045] [2025-03-04 15:22:17,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:17,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:17,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:22:17,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:22:17,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:17,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:22:17,840 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:22:17,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:22:17,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:22:17,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:17,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:22:17,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:22:17,881 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:22:17,882 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-04 15:22:17,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-03-04 15:22:17,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-03-04 15:22:17,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-03-04 15:22:17,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-03-04 15:22:17,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-03-04 15:22:17,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-03-04 15:22:17,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-03-04 15:22:17,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-03-04 15:22:17,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-03-04 15:22:17,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-03-04 15:22:17,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-03-04 15:22:17,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-03-04 15:22:17,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-03-04 15:22:17,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-03-04 15:22:17,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:22:17,886 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 15:22:17,888 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:22:17,889 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 15:22:17,921 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:22:17,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 180 transitions, 376 flow [2025-03-04 15:22:17,944 INFO L124 PetriNetUnfolderBase]: 57/291 cut-off events. [2025-03-04 15:22:17,945 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 15:22:17,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 291 events. 57/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1413 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 178. Up to 9 conditions per place. [2025-03-04 15:22:17,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 180 transitions, 376 flow [2025-03-04 15:22:17,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 180 transitions, 376 flow [2025-03-04 15:22:17,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:22:17,950 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;@693673fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:22:17,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-04 15:22:17,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:22:17,951 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-04 15:22:17,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:22:17,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:17,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:22:17,952 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)] === [2025-03-04 15:22:17,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash 708848246, now seen corresponding path program 1 times [2025-03-04 15:22:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:17,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811647413] [2025-03-04 15:22:17,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:17,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:22:17,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:22:17,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:17,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811647413] [2025-03-04 15:22:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811647413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:18,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395033878] [2025-03-04 15:22:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:18,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:18,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:18,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:18,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:18,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2025-03-04 15:22:18,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 180 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2025-03-04 15:22:18,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:18,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2025-03-04 15:22:18,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:22,101 INFO L124 PetriNetUnfolderBase]: 28459/58305 cut-off events. [2025-03-04 15:22:22,102 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-04 15:22:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102046 conditions, 58305 events. 28459/58305 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 582107 event pairs, 13482 based on Foata normal form. 9965/63863 useless extension candidates. Maximal degree in co-relation 4550. Up to 43557 conditions per place. [2025-03-04 15:22:22,442 INFO L140 encePairwiseOnDemand]: 141/180 looper letters, 119 selfloop transitions, 3 changer transitions 0/192 dead transitions. [2025-03-04 15:22:22,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 192 transitions, 644 flow [2025-03-04 15:22:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:22:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:22:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2025-03-04 15:22:22,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2025-03-04 15:22:22,449 INFO L175 Difference]: Start difference. First operand has 149 places, 180 transitions, 376 flow. Second operand 4 states and 462 transitions. [2025-03-04 15:22:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 192 transitions, 644 flow [2025-03-04 15:22:22,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 192 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:22:22,455 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 334 flow [2025-03-04 15:22:22,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2025-03-04 15:22:22,456 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 5 predicate places. [2025-03-04 15:22:22,457 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 334 flow [2025-03-04 15:22:22,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2025-03-04 15:22:22,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:22,458 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:22,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:22:22,459 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:22,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1792019455, now seen corresponding path program 1 times [2025-03-04 15:22:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141238801] [2025-03-04 15:22:22,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:22,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:22:22,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:22:22,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:22,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141238801] [2025-03-04 15:22:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141238801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:22,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:22,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751089421] [2025-03-04 15:22:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:22,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:22,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:22,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:22,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 180 [2025-03-04 15:22:22,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2025-03-04 15:22:22,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:22,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 180 [2025-03-04 15:22:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:28,493 INFO L124 PetriNetUnfolderBase]: 49861/99957 cut-off events. [2025-03-04 15:22:28,493 INFO L125 PetriNetUnfolderBase]: For 1286/2368 co-relation queries the response was YES. [2025-03-04 15:22:28,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177355 conditions, 99957 events. 49861/99957 cut-off events. For 1286/2368 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 1067212 event pairs, 12342 based on Foata normal form. 1024/94571 useless extension candidates. Maximal degree in co-relation 177182. Up to 42027 conditions per place. [2025-03-04 15:22:28,950 INFO L140 encePairwiseOnDemand]: 169/180 looper letters, 234 selfloop transitions, 16 changer transitions 0/322 dead transitions. [2025-03-04 15:22:28,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 322 transitions, 1220 flow [2025-03-04 15:22:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:22:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:22:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2025-03-04 15:22:28,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2025-03-04 15:22:28,954 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 334 flow. Second operand 5 states and 606 transitions. [2025-03-04 15:22:28,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 322 transitions, 1220 flow [2025-03-04 15:22:28,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 322 transitions, 1216 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:22:28,962 INFO L231 Difference]: Finished difference. Result has 161 places, 164 transitions, 458 flow [2025-03-04 15:22:28,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=161, PETRI_TRANSITIONS=164} [2025-03-04 15:22:28,965 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 12 predicate places. [2025-03-04 15:22:28,966 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 164 transitions, 458 flow [2025-03-04 15:22:28,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2025-03-04 15:22:28,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:28,966 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:28,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:22:28,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:28,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -672015833, now seen corresponding path program 1 times [2025-03-04 15:22:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984427093] [2025-03-04 15:22:28,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:28,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:22:28,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:22:28,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:28,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:29,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:29,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984427093] [2025-03-04 15:22:29,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984427093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:29,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:29,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:22:29,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061570761] [2025-03-04 15:22:29,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:29,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:22:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:29,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:22:29,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:22:29,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2025-03-04 15:22:29,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 164 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:29,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:29,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2025-03-04 15:22:29,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:35,223 INFO L124 PetriNetUnfolderBase]: 49038/97488 cut-off events. [2025-03-04 15:22:35,223 INFO L125 PetriNetUnfolderBase]: For 20809/20819 co-relation queries the response was YES. [2025-03-04 15:22:35,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191732 conditions, 97488 events. 49038/97488 cut-off events. For 20809/20819 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 1030684 event pairs, 12216 based on Foata normal form. 506/92688 useless extension candidates. Maximal degree in co-relation 89898. Up to 68549 conditions per place. [2025-03-04 15:22:35,967 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 224 selfloop transitions, 6 changer transitions 0/300 dead transitions. [2025-03-04 15:22:35,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 300 transitions, 1272 flow [2025-03-04 15:22:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:22:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:22:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2025-03-04 15:22:35,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5796296296296296 [2025-03-04 15:22:35,969 INFO L175 Difference]: Start difference. First operand has 161 places, 164 transitions, 458 flow. Second operand 6 states and 626 transitions. [2025-03-04 15:22:35,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 300 transitions, 1272 flow [2025-03-04 15:22:35,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 300 transitions, 1272 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:22:35,988 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 466 flow [2025-03-04 15:22:35,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2025-03-04 15:22:35,990 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 16 predicate places. [2025-03-04 15:22:35,991 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 466 flow [2025-03-04 15:22:35,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:35,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:35,991 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:22:35,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:22:35,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:35,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash 642346311, now seen corresponding path program 1 times [2025-03-04 15:22:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:35,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920313172] [2025-03-04 15:22:35,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:36,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:22:36,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:22:36,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:36,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:36,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920313172] [2025-03-04 15:22:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920313172] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:36,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:22:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575748509] [2025-03-04 15:22:36,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:36,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:36,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:36,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:36,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:36,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2025-03-04 15:22:36,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2025-03-04 15:22:36,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:36,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2025-03-04 15:22:36,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:42,828 INFO L124 PetriNetUnfolderBase]: 48309/94972 cut-off events. [2025-03-04 15:22:42,829 INFO L125 PetriNetUnfolderBase]: For 22317/22327 co-relation queries the response was YES. [2025-03-04 15:22:43,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188998 conditions, 94972 events. 48309/94972 cut-off events. For 22317/22327 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 992214 event pairs, 12336 based on Foata normal form. 534/91085 useless extension candidates. Maximal degree in co-relation 134920. Up to 70288 conditions per place. [2025-03-04 15:22:43,345 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 181 selfloop transitions, 6 changer transitions 0/257 dead transitions. [2025-03-04 15:22:43,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 257 transitions, 1090 flow [2025-03-04 15:22:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:22:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:22:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2025-03-04 15:22:43,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6125 [2025-03-04 15:22:43,347 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 466 flow. Second operand 4 states and 441 transitions. [2025-03-04 15:22:43,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 257 transitions, 1090 flow [2025-03-04 15:22:43,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 257 transitions, 1074 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-04 15:22:43,398 INFO L231 Difference]: Finished difference. Result has 163 places, 163 transitions, 466 flow [2025-03-04 15:22:43,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=163, PETRI_TRANSITIONS=163} [2025-03-04 15:22:43,399 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 14 predicate places. [2025-03-04 15:22:43,399 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 163 transitions, 466 flow [2025-03-04 15:22:43,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2025-03-04 15:22:43,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:43,399 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-04 15:22:43,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:22:43,399 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)] === [2025-03-04 15:22:43,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1180463147, now seen corresponding path program 1 times [2025-03-04 15:22:43,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075585016] [2025-03-04 15:22:43,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:43,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:22:43,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:22:43,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:43,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:22:43,423 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:22:43,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:22:43,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:22:43,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:43,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:22:43,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:22:43,444 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-03-04 15:22:43,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-03-04 15:22:43,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-03-04 15:22:43,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-03-04 15:22:43,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-03-04 15:22:43,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-03-04 15:22:43,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-03-04 15:22:43,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-03-04 15:22:43,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:22:43,449 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-04 15:22:43,449 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:22:43,449 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 15:22:43,483 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 15:22:43,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 241 transitions, 509 flow [2025-03-04 15:22:43,516 INFO L124 PetriNetUnfolderBase]: 84/436 cut-off events. [2025-03-04 15:22:43,516 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-04 15:22:43,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 436 events. 84/436 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2234 event pairs, 1 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 306. Up to 12 conditions per place. [2025-03-04 15:22:43,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 241 transitions, 509 flow [2025-03-04 15:22:43,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 241 transitions, 509 flow [2025-03-04 15:22:43,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:22:43,526 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;@693673fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:22:43,526 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-03-04 15:22:43,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:22:43,528 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-04 15:22:43,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:22:43,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:43,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:22:43,528 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)] === [2025-03-04 15:22:43,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 938892450, now seen corresponding path program 1 times [2025-03-04 15:22:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318011674] [2025-03-04 15:22:43,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:43,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:43,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:22:43,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:22:43,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:43,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:43,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:43,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318011674] [2025-03-04 15:22:43,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318011674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:43,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:43,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:43,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49141122] [2025-03-04 15:22:43,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:43,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:43,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:43,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:43,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:43,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 241 [2025-03-04 15:22:43,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 241 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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) [2025-03-04 15:22:43,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:43,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 241 [2025-03-04 15:22:43,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand