./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_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-?-8fc3dc6-m [2025-03-17 19:38:40,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:38:40,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:38:40,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:38:40,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:38:40,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:38:40,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:38:40,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:38:40,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:38:40,629 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:38:40,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:38:40,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:38:40,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:38:40,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:38:40,629 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:38:40,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:38:40,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:38:40,629 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:38:40,630 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:38:40,632 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:38:40,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:38:40,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:38:40,632 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 [2025-03-17 19:38:40,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:38:40,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:38:40,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:38:40,883 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:38:40,883 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:38:40,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2025-03-17 19:38:42,020 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cac10407/26d3663d0b8445869518b18c025ef570/FLAGca5f5051a [2025-03-17 19:38:42,272 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:38:42,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2025-03-17 19:38:42,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cac10407/26d3663d0b8445869518b18c025ef570/FLAGca5f5051a [2025-03-17 19:38:42,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cac10407/26d3663d0b8445869518b18c025ef570 [2025-03-17 19:38:42,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:38:42,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:38:42,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:38:42,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:38:42,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:38:42,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:42,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35585358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42, skipping insertion in model container [2025-03-17 19:38:42,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:42,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:38:42,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:38:42,918 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:38:42,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:38:42,986 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:38:42,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42 WrapperNode [2025-03-17 19:38:42,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:38:42,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:38:42,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:38:42,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:38:42,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,014 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 150 [2025-03-17 19:38:43,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:38:43,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:38:43,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:38:43,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:38:43,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,033 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2025-03-17 19:38:43,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,040 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:38:43,045 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:38:43,045 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:38:43,045 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:38:43,046 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (1/1) ... [2025-03-17 19:38:43,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:38:43,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:38:43,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:38:43,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:38:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:38:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 19:38:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:38:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:38:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:38:43,086 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:38:43,201 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:38:43,203 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:38:43,417 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:38:43,418 INFO L1322 $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 [2025-03-17 19:38:43,483 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:38:43,484 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:38:43,656 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:38:43,656 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:38:43,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:38:43 BoogieIcfgContainer [2025-03-17 19:38:43,656 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:38:43,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:38:43,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:38:43,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:38:43,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:38:42" (1/3) ... [2025-03-17 19:38:43,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636476b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:38:43, skipping insertion in model container [2025-03-17 19:38:43,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:42" (2/3) ... [2025-03-17 19:38:43,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636476b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:38:43, skipping insertion in model container [2025-03-17 19:38:43,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:38:43" (3/3) ... [2025-03-17 19:38:43,664 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2025-03-17 19:38:43,675 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:38:43,676 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. [2025-03-17 19:38:43,677 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:38:43,722 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:38:43,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 119 transitions, 245 flow [2025-03-17 19:38:43,792 INFO L124 PetriNetUnfolderBase]: 33/165 cut-off events. [2025-03-17 19:38:43,795 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:38:43,801 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 687 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. [2025-03-17 19:38:43,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 119 transitions, 245 flow [2025-03-17 19:38:43,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 118 transitions, 243 flow [2025-03-17 19:38:43,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:38:43,824 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;@26a03170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:38:43,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 19:38:43,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:38:43,832 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-17 19:38:43,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:38:43,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:43,833 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:38:43,836 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)] === [2025-03-17 19:38:43,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 536033513, now seen corresponding path program 1 times [2025-03-17 19:38:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:43,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591790823] [2025-03-17 19:38:43,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:43,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:38:43,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:38:43,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:43,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591790823] [2025-03-17 19:38:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591790823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691086534] [2025-03-17 19:38:44,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:44,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:44,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:44,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:44,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:44,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2025-03-17 19:38:44,135 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) [2025-03-17 19:38:44,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:44,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2025-03-17 19:38:44,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:44,493 INFO L124 PetriNetUnfolderBase]: 589/1524 cut-off events. [2025-03-17 19:38:44,494 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:38:44,499 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 9399 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. [2025-03-17 19:38:44,506 INFO L140 encePairwiseOnDemand]: 92/119 looper letters, 91 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2025-03-17 19:38:44,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 138 transitions, 471 flow [2025-03-17 19:38:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2025-03-17 19:38:44,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6680672268907563 [2025-03-17 19:38:44,521 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 243 flow. Second operand 4 states and 318 transitions. [2025-03-17 19:38:44,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 138 transitions, 471 flow [2025-03-17 19:38:44,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 138 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:44,532 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 207 flow [2025-03-17 19:38:44,534 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} [2025-03-17 19:38:44,538 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2025-03-17 19:38:44,538 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 207 flow [2025-03-17 19:38:44,538 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) [2025-03-17 19:38:44,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:44,539 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:44,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:38:44,539 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)] === [2025-03-17 19:38:44,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:44,539 INFO L85 PathProgramCache]: Analyzing trace with hash 286451494, now seen corresponding path program 1 times [2025-03-17 19:38:44,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:44,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936957634] [2025-03-17 19:38:44,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:44,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:38:44,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:38:44,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:44,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:38:44,563 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:38:44,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:38:44,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:38:44,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:44,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:38:44,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:38:44,593 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:38:44,594 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-17 19:38:44,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-03-17 19:38:44,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-03-17 19:38:44,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-03-17 19:38:44,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-03-17 19:38:44,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:38:44,598 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 19:38:44,600 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:38:44,600 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:38:44,634 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:38:44,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 180 transitions, 376 flow [2025-03-17 19:38:44,666 INFO L124 PetriNetUnfolderBase]: 57/291 cut-off events. [2025-03-17 19:38:44,666 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:38:44,669 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 1411 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. [2025-03-17 19:38:44,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 180 transitions, 376 flow [2025-03-17 19:38:44,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 180 transitions, 376 flow [2025-03-17 19:38:44,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:38:44,675 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;@26a03170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:38:44,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 19:38:44,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:38:44,678 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-17 19:38:44,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:38:44,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:44,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:38:44,678 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)] === [2025-03-17 19:38:44,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash 707865112, now seen corresponding path program 1 times [2025-03-17 19:38:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897439586] [2025-03-17 19:38:44,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:44,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:38:44,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:38:44,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:44,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:44,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897439586] [2025-03-17 19:38:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897439586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:44,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:44,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727197688] [2025-03-17 19:38:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:44,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:44,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:44,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:44,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:44,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2025-03-17 19:38:44,772 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) [2025-03-17 19:38:44,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:44,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2025-03-17 19:38:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:48,826 INFO L124 PetriNetUnfolderBase]: 28459/58305 cut-off events. [2025-03-17 19:38:48,826 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-17 19:38:48,892 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 582306 event pairs, 13482 based on Foata normal form. 9965/63841 useless extension candidates. Maximal degree in co-relation 4550. Up to 43557 conditions per place. [2025-03-17 19:38:49,141 INFO L140 encePairwiseOnDemand]: 141/180 looper letters, 119 selfloop transitions, 3 changer transitions 0/192 dead transitions. [2025-03-17 19:38:49,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 192 transitions, 644 flow [2025-03-17 19:38:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2025-03-17 19:38:49,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2025-03-17 19:38:49,145 INFO L175 Difference]: Start difference. First operand has 149 places, 180 transitions, 376 flow. Second operand 4 states and 462 transitions. [2025-03-17 19:38:49,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 192 transitions, 644 flow [2025-03-17 19:38:49,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 192 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:49,153 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 334 flow [2025-03-17 19:38:49,154 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} [2025-03-17 19:38:49,154 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 5 predicate places. [2025-03-17 19:38:49,154 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 334 flow [2025-03-17 19:38:49,155 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) [2025-03-17 19:38:49,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:49,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:49,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:38:49,155 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)] === [2025-03-17 19:38:49,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 824781634, now seen corresponding path program 1 times [2025-03-17 19:38:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:49,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996637728] [2025-03-17 19:38:49,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:49,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:38:49,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:38:49,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:49,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:49,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:49,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996637728] [2025-03-17 19:38:49,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996637728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777005600] [2025-03-17 19:38:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:49,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:49,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:49,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:49,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 180 [2025-03-17 19:38:49,244 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) [2025-03-17 19:38:49,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:49,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 180 [2025-03-17 19:38:49,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:55,276 INFO L124 PetriNetUnfolderBase]: 49861/99957 cut-off events. [2025-03-17 19:38:55,276 INFO L125 PetriNetUnfolderBase]: For 1286/2368 co-relation queries the response was YES. [2025-03-17 19:38:55,465 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 1068080 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. [2025-03-17 19:38:55,897 INFO L140 encePairwiseOnDemand]: 169/180 looper letters, 234 selfloop transitions, 16 changer transitions 0/322 dead transitions. [2025-03-17 19:38:55,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 322 transitions, 1220 flow [2025-03-17 19:38:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:38:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:38:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2025-03-17 19:38:55,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2025-03-17 19:38:55,899 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 334 flow. Second operand 5 states and 606 transitions. [2025-03-17 19:38:55,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 322 transitions, 1220 flow [2025-03-17 19:38:55,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 322 transitions, 1216 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:38:55,906 INFO L231 Difference]: Finished difference. Result has 161 places, 164 transitions, 458 flow [2025-03-17 19:38:55,907 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} [2025-03-17 19:38:55,909 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 12 predicate places. [2025-03-17 19:38:55,909 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 164 transitions, 458 flow [2025-03-17 19:38:55,909 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) [2025-03-17 19:38:55,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:55,909 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:55,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:38:55,910 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)] === [2025-03-17 19:38:55,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2043123992, now seen corresponding path program 1 times [2025-03-17 19:38:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594497041] [2025-03-17 19:38:55,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:55,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:55,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:38:55,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:38:55,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:55,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:55,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:55,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594497041] [2025-03-17 19:38:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594497041] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:38:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321989134] [2025-03-17 19:38:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:55,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:38:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:55,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:38:55,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:38:56,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2025-03-17 19:38:56,005 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) [2025-03-17 19:38:56,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:56,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2025-03-17 19:38:56,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:02,227 INFO L124 PetriNetUnfolderBase]: 49038/97488 cut-off events. [2025-03-17 19:39:02,227 INFO L125 PetriNetUnfolderBase]: For 20809/20819 co-relation queries the response was YES. [2025-03-17 19:39:02,437 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 1633. Compared 1031106 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. [2025-03-17 19:39:02,723 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 224 selfloop transitions, 6 changer transitions 0/300 dead transitions. [2025-03-17 19:39:02,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 300 transitions, 1272 flow [2025-03-17 19:39:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2025-03-17 19:39:02,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5796296296296296 [2025-03-17 19:39:02,725 INFO L175 Difference]: Start difference. First operand has 161 places, 164 transitions, 458 flow. Second operand 6 states and 626 transitions. [2025-03-17 19:39:02,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 300 transitions, 1272 flow [2025-03-17 19:39:02,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 300 transitions, 1272 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:02,744 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 466 flow [2025-03-17 19:39:02,744 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} [2025-03-17 19:39:02,746 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 16 predicate places. [2025-03-17 19:39:02,746 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 466 flow [2025-03-17 19:39:02,747 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) [2025-03-17 19:39:02,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:02,747 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:39:02,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:39:02,747 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)] === [2025-03-17 19:39:02,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1087666342, now seen corresponding path program 1 times [2025-03-17 19:39:02,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:02,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966364724] [2025-03-17 19:39:02,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:02,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:39:02,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:39:02,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:02,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:02,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966364724] [2025-03-17 19:39:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966364724] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:02,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453499300] [2025-03-17 19:39:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:02,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:02,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:02,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:02,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2025-03-17 19:39:02,794 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) [2025-03-17 19:39:02,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:02,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2025-03-17 19:39:02,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:09,549 INFO L124 PetriNetUnfolderBase]: 48309/94972 cut-off events. [2025-03-17 19:39:09,549 INFO L125 PetriNetUnfolderBase]: For 22317/22327 co-relation queries the response was YES. [2025-03-17 19:39:09,753 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 993324 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. [2025-03-17 19:39:10,053 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 181 selfloop transitions, 6 changer transitions 0/257 dead transitions. [2025-03-17 19:39:10,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 257 transitions, 1090 flow [2025-03-17 19:39:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2025-03-17 19:39:10,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6125 [2025-03-17 19:39:10,055 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 466 flow. Second operand 4 states and 441 transitions. [2025-03-17 19:39:10,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 257 transitions, 1090 flow [2025-03-17 19:39:10,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 257 transitions, 1074 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:39:10,102 INFO L231 Difference]: Finished difference. Result has 163 places, 163 transitions, 466 flow [2025-03-17 19:39:10,102 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} [2025-03-17 19:39:10,103 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, 14 predicate places. [2025-03-17 19:39:10,103 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 163 transitions, 466 flow [2025-03-17 19:39:10,103 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) [2025-03-17 19:39:10,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:10,103 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 19:39:10,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:39:10,104 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)] === [2025-03-17 19:39:10,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1570324278, now seen corresponding path program 1 times [2025-03-17 19:39:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:10,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105338790] [2025-03-17 19:39:10,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:10,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:39:10,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:39:10,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:10,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:10,123 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:39:10,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:39:10,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:39:10,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:10,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:10,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:39:10,145 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:39:10,145 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-17 19:39:10,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-03-17 19:39:10,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-03-17 19:39:10,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-03-17 19:39:10,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-03-17 19:39:10,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-03-17 19:39:10,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-03-17 19:39:10,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-03-17 19:39:10,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-03-17 19:39:10,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-03-17 19:39:10,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-03-17 19:39:10,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:39:10,150 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-17 19:39:10,151 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:39:10,151 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:39:10,195 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:39:10,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 241 transitions, 509 flow [2025-03-17 19:39:10,247 INFO L124 PetriNetUnfolderBase]: 84/436 cut-off events. [2025-03-17 19:39:10,247 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:39:10,252 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 2229 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. [2025-03-17 19:39:10,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 241 transitions, 509 flow [2025-03-17 19:39:10,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 241 transitions, 509 flow [2025-03-17 19:39:10,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:10,259 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;@26a03170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:10,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-03-17 19:39:10,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:10,262 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:39:10,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:10,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:10,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:39:10,262 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)] === [2025-03-17 19:39:10,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash 937909316, now seen corresponding path program 1 times [2025-03-17 19:39:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:10,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304056268] [2025-03-17 19:39:10,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:10,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:39:10,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:39:10,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:10,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304056268] [2025-03-17 19:39:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304056268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:10,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611311485] [2025-03-17 19:39:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:10,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:10,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:10,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:10,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:10,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 241 [2025-03-17 19:39:10,309 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) [2025-03-17 19:39:10,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:10,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 241 [2025-03-17 19:39:10,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand