./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:05:21,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:05:21,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:05:21,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:05:21,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:05:21,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:05:21,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:05:21,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:05:21,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:05:21,446 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:05:21,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:05:21,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:05:21,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:05:21,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:05:21,447 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:05:21,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:05:21,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:05:21,447 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:05:21,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:05:21,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:05:21,449 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:05:21,449 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:05:21,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:05:21,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:05:21,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:05:21,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:05:21,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:05:21,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:05:21,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:05:21,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:05:21,451 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2025-02-08 14:05:21,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:05:21,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:05:21,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:05:21,751 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:05:21,752 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:05:21,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2025-02-08 14:05:23,026 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0f8ff7f8/25df49f9f6a74548a38728561573a71a/FLAGd74ddf6fd [2025-02-08 14:05:23,404 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:05:23,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2025-02-08 14:05:23,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0f8ff7f8/25df49f9f6a74548a38728561573a71a/FLAGd74ddf6fd [2025-02-08 14:05:23,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0f8ff7f8/25df49f9f6a74548a38728561573a71a [2025-02-08 14:05:23,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:05:23,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:05:23,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:05:23,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:05:23,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:05:23,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:05:23" (1/1) ... [2025-02-08 14:05:23,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338fa27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:23, skipping insertion in model container [2025-02-08 14:05:23,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:05:23" (1/1) ... [2025-02-08 14:05:23,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:05:24,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:05:24,098 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:05:24,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:05:24,193 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:05:24,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24 WrapperNode [2025-02-08 14:05:24,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:05:24,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:05:24,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:05:24,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:05:24,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,242 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2025-02-08 14:05:24,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:05:24,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:05:24,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:05:24,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:05:24,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,268 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2025-02-08 14:05:24,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,278 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:05:24,284 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:05:24,284 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:05:24,284 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:05:24,285 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (1/1) ... [2025-02-08 14:05:24,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:05:24,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:05:24,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:05:24,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:05:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 14:05:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 14:05:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:05:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:05:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:05:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:05:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:05:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:05:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:05:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:05:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:05:24,335 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:05:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:05:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:05:24,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:05:24,337 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:05:24,465 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:05:24,467 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:05:24,687 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-08 14:05:24,687 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-08 14:05:24,741 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:05:24,741 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:05:24,933 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:05:24,934 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:05:24,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:05:24 BoogieIcfgContainer [2025-02-08 14:05:24,934 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:05:24,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:05:24,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:05:24,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:05:24,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:05:23" (1/3) ... [2025-02-08 14:05:24,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1427f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:05:24, skipping insertion in model container [2025-02-08 14:05:24,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:05:24" (2/3) ... [2025-02-08 14:05:24,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1427f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:05:24, skipping insertion in model container [2025-02-08 14:05:24,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:05:24" (3/3) ... [2025-02-08 14:05:24,943 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2025-02-08 14:05:24,956 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:05:24,958 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_08-cond_racefree.i that has 2 procedures, 58 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2025-02-08 14:05:24,959 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:05:25,008 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:05:25,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 70 transitions, 147 flow [2025-02-08 14:05:25,083 INFO L124 PetriNetUnfolderBase]: 17/93 cut-off events. [2025-02-08 14:05:25,085 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:05:25,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 93 events. 17/93 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 294 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2025-02-08 14:05:25,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 70 transitions, 147 flow [2025-02-08 14:05:25,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 69 transitions, 145 flow [2025-02-08 14:05:25,104 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:05:25,116 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;@6edf26f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:05:25,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-08 14:05:25,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:05:25,122 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2025-02-08 14:05:25,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:05:25,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:25,123 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:05:25,124 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:05:25,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash 421944058, now seen corresponding path program 1 times [2025-02-08 14:05:25,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:25,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797800194] [2025-02-08 14:05:25,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:25,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:05:25,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:05:25,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:25,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797800194] [2025-02-08 14:05:25,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797800194] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:25,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:25,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:25,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844959558] [2025-02-08 14:05:25,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:25,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:25,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:25,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:25,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-02-08 14:05:25,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 69 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:25,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:25,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-02-08 14:05:25,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:25,768 INFO L124 PetriNetUnfolderBase]: 171/528 cut-off events. [2025-02-08 14:05:25,768 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:05:25,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 528 events. 171/528 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2825 event pairs, 21 based on Foata normal form. 116/552 useless extension candidates. Maximal degree in co-relation 808. Up to 220 conditions per place. [2025-02-08 14:05:25,773 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 46 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2025-02-08 14:05:25,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 271 flow [2025-02-08 14:05:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-02-08 14:05:25,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2025-02-08 14:05:25,789 INFO L175 Difference]: Start difference. First operand has 61 places, 69 transitions, 145 flow. Second operand 4 states and 199 transitions. [2025-02-08 14:05:25,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 271 flow [2025-02-08 14:05:25,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 271 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:05:25,798 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 135 flow [2025-02-08 14:05:25,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2025-02-08 14:05:25,805 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-02-08 14:05:25,806 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 135 flow [2025-02-08 14:05:25,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:25,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:25,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:05:25,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:05:25,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:05:25,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 195364261, now seen corresponding path program 1 times [2025-02-08 14:05:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797580289] [2025-02-08 14:05:25,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:25,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:25,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:05:25,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:05:25,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:25,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:25,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797580289] [2025-02-08 14:05:25,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797580289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:25,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45746308] [2025-02-08 14:05:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:25,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:25,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:25,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:25,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-02-08 14:05:25,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:25,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:25,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-02-08 14:05:25,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:26,135 INFO L124 PetriNetUnfolderBase]: 157/458 cut-off events. [2025-02-08 14:05:26,135 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-08 14:05:26,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 458 events. 157/458 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2348 event pairs, 0 based on Foata normal form. 13/414 useless extension candidates. Maximal degree in co-relation 762. Up to 256 conditions per place. [2025-02-08 14:05:26,141 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 47 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2025-02-08 14:05:26,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 279 flow [2025-02-08 14:05:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:26,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2025-02-08 14:05:26,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-02-08 14:05:26,145 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 135 flow. Second operand 4 states and 180 transitions. [2025-02-08 14:05:26,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 279 flow [2025-02-08 14:05:26,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 271 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:05:26,150 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 135 flow [2025-02-08 14:05:26,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2025-02-08 14:05:26,151 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-02-08 14:05:26,151 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 135 flow [2025-02-08 14:05:26,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:26,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:26,151 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:05:26,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:05:26,152 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:05:26,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:26,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1233491911, now seen corresponding path program 1 times [2025-02-08 14:05:26,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:26,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606464681] [2025-02-08 14:05:26,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:26,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:26,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:05:26,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:05:26,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:26,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:05:26,220 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:05:26,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:05:26,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:05:26,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:26,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:05:26,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:05:26,266 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:05:26,266 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-02-08 14:05:26,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-02-08 14:05:26,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-02-08 14:05:26,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-02-08 14:05:26,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-02-08 14:05:26,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-02-08 14:05:26,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-02-08 14:05:26,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-02-08 14:05:26,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-02-08 14:05:26,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-02-08 14:05:26,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-02-08 14:05:26,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-02-08 14:05:26,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-02-08 14:05:26,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:05:26,269 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 14:05:26,272 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:05:26,273 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:05:26,307 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:05:26,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 105 transitions, 226 flow [2025-02-08 14:05:26,328 INFO L124 PetriNetUnfolderBase]: 30/170 cut-off events. [2025-02-08 14:05:26,328 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:05:26,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 170 events. 30/170 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 650 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 103. Up to 9 conditions per place. [2025-02-08 14:05:26,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 105 transitions, 226 flow [2025-02-08 14:05:26,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 105 transitions, 226 flow [2025-02-08 14:05:26,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:05:26,336 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;@6edf26f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:05:26,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-08 14:05:26,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:05:26,339 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2025-02-08 14:05:26,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:05:26,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:26,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:05:26,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:05:26,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash 522177796, now seen corresponding path program 1 times [2025-02-08 14:05:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422744218] [2025-02-08 14:05:26,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:26,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:05:26,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:05:26,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:26,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422744218] [2025-02-08 14:05:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422744218] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:26,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:26,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488346197] [2025-02-08 14:05:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:26,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:26,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:26,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:26,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:26,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2025-02-08 14:05:26,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:26,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:26,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2025-02-08 14:05:26,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:27,417 INFO L124 PetriNetUnfolderBase]: 3972/8547 cut-off events. [2025-02-08 14:05:27,418 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-02-08 14:05:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14529 conditions, 8547 events. 3972/8547 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 72331 event pairs, 657 based on Foata normal form. 2426/9792 useless extension candidates. Maximal degree in co-relation 11218. Up to 3901 conditions per place. [2025-02-08 14:05:27,483 INFO L140 encePairwiseOnDemand]: 86/105 looper letters, 82 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2025-02-08 14:05:27,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 456 flow [2025-02-08 14:05:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2025-02-08 14:05:27,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2025-02-08 14:05:27,519 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 226 flow. Second operand 4 states and 317 transitions. [2025-02-08 14:05:27,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 456 flow [2025-02-08 14:05:27,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:05:27,524 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 204 flow [2025-02-08 14:05:27,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2025-02-08 14:05:27,525 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2025-02-08 14:05:27,526 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 204 flow [2025-02-08 14:05:27,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:27,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:27,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:05:27,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:05:27,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:05:27,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash -992357052, now seen corresponding path program 1 times [2025-02-08 14:05:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:27,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989501855] [2025-02-08 14:05:27,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:27,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:05:27,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:05:27,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:27,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:27,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989501855] [2025-02-08 14:05:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989501855] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:27,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:27,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327044230] [2025-02-08 14:05:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:27,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:27,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:27,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:27,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2025-02-08 14:05:27,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:27,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:27,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2025-02-08 14:05:27,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:28,561 INFO L124 PetriNetUnfolderBase]: 4347/9437 cut-off events. [2025-02-08 14:05:28,562 INFO L125 PetriNetUnfolderBase]: For 499/499 co-relation queries the response was YES. [2025-02-08 14:05:28,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16572 conditions, 9437 events. 4347/9437 cut-off events. For 499/499 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 81813 event pairs, 1820 based on Foata normal form. 13/8604 useless extension candidates. Maximal degree in co-relation 1319. Up to 6561 conditions per place. [2025-02-08 14:05:28,634 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 64 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2025-02-08 14:05:28,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 115 transitions, 392 flow [2025-02-08 14:05:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2025-02-08 14:05:28,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2025-02-08 14:05:28,636 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 204 flow. Second operand 4 states and 261 transitions. [2025-02-08 14:05:28,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 115 transitions, 392 flow [2025-02-08 14:05:28,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:05:28,642 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 218 flow [2025-02-08 14:05:28,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2025-02-08 14:05:28,643 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2025-02-08 14:05:28,644 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 218 flow [2025-02-08 14:05:28,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:28,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:28,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:05:28,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:05:28,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:05:28,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1129478429, now seen corresponding path program 1 times [2025-02-08 14:05:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065620498] [2025-02-08 14:05:28,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:28,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:05:28,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:05:28,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:28,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:28,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:28,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065620498] [2025-02-08 14:05:28,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065620498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:28,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:28,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573883484] [2025-02-08 14:05:28,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:28,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:28,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:28,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:28,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2025-02-08 14:05:28,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:28,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:28,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2025-02-08 14:05:28,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:30,102 INFO L124 PetriNetUnfolderBase]: 6320/13169 cut-off events. [2025-02-08 14:05:30,102 INFO L125 PetriNetUnfolderBase]: For 458/629 co-relation queries the response was YES. [2025-02-08 14:05:30,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23285 conditions, 13169 events. 6320/13169 cut-off events. For 458/629 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 116272 event pairs, 1495 based on Foata normal form. 232/11965 useless extension candidates. Maximal degree in co-relation 23182. Up to 6459 conditions per place. [2025-02-08 14:05:30,169 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 122 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2025-02-08 14:05:30,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 708 flow [2025-02-08 14:05:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:05:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:05:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2025-02-08 14:05:30,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2025-02-08 14:05:30,171 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 218 flow. Second operand 5 states and 380 transitions. [2025-02-08 14:05:30,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 708 flow [2025-02-08 14:05:30,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:05:30,178 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 310 flow [2025-02-08 14:05:30,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2025-02-08 14:05:30,179 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2025-02-08 14:05:30,179 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 310 flow [2025-02-08 14:05:30,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:30,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:30,179 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:05:30,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:05:30,179 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:05:30,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1719419682, now seen corresponding path program 1 times [2025-02-08 14:05:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:30,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834810790] [2025-02-08 14:05:30,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:30,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:05:30,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:05:30,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:30,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834810790] [2025-02-08 14:05:30,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834810790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:30,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:30,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:05:30,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138545271] [2025-02-08 14:05:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:30,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:30,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:30,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:30,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2025-02-08 14:05:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:30,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2025-02-08 14:05:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:31,304 INFO L124 PetriNetUnfolderBase]: 5312/11556 cut-off events. [2025-02-08 14:05:31,304 INFO L125 PetriNetUnfolderBase]: For 3169/3174 co-relation queries the response was YES. [2025-02-08 14:05:31,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22831 conditions, 11556 events. 5312/11556 cut-off events. For 3169/3174 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 103255 event pairs, 563 based on Foata normal form. 0/10361 useless extension candidates. Maximal degree in co-relation 19561. Up to 7015 conditions per place. [2025-02-08 14:05:31,381 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 103 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2025-02-08 14:05:31,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 157 transitions, 698 flow [2025-02-08 14:05:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2025-02-08 14:05:31,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2025-02-08 14:05:31,383 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 310 flow. Second operand 4 states and 279 transitions. [2025-02-08 14:05:31,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 157 transitions, 698 flow [2025-02-08 14:05:31,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 157 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:05:31,394 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 326 flow [2025-02-08 14:05:31,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2025-02-08 14:05:31,397 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 14 predicate places. [2025-02-08 14:05:31,397 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 326 flow [2025-02-08 14:05:31,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:31,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:31,398 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-08 14:05:31,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:05:31,398 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:05:31,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1200076873, now seen corresponding path program 1 times [2025-02-08 14:05:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719842266] [2025-02-08 14:05:31,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:31,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:31,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:05:31,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:05:31,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:31,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:05:31,443 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:05:31,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:05:31,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:05:31,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:31,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:05:31,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:05:31,477 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:05:31,477 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-08 14:05:31,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-08 14:05:31,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-08 14:05:31,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-08 14:05:31,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-08 14:05:31,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-08 14:05:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-08 14:05:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-08 14:05:31,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-08 14:05:31,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:05:31,479 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-08 14:05:31,480 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:05:31,480 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:05:31,509 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:05:31,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 140 transitions, 307 flow [2025-02-08 14:05:31,535 INFO L124 PetriNetUnfolderBase]: 46/266 cut-off events. [2025-02-08 14:05:31,536 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-08 14:05:31,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 266 events. 46/266 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1135 event pairs, 1 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 185. Up to 12 conditions per place. [2025-02-08 14:05:31,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 140 transitions, 307 flow [2025-02-08 14:05:31,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 140 transitions, 307 flow [2025-02-08 14:05:31,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:05:31,541 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;@6edf26f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:05:31,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 14:05:31,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:05:31,545 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2025-02-08 14:05:31,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:05:31,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:31,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:05:31,545 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:05:31,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 655812209, now seen corresponding path program 1 times [2025-02-08 14:05:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200605007] [2025-02-08 14:05:31,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:31,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:05:31,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:05:31,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:31,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200605007] [2025-02-08 14:05:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200605007] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:31,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180553387] [2025-02-08 14:05:31,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:31,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:31,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:31,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:31,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 140 [2025-02-08 14:05:31,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 140 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:31,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:31,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 140 [2025-02-08 14:05:31,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:39,444 INFO L124 PetriNetUnfolderBase]: 71949/128296 cut-off events. [2025-02-08 14:05:39,444 INFO L125 PetriNetUnfolderBase]: For 1434/1434 co-relation queries the response was YES. [2025-02-08 14:05:39,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225393 conditions, 128296 events. 71949/128296 cut-off events. For 1434/1434 co-relation queries the response was YES. Maximal size of possible extension queue 2955. Compared 1333915 event pairs, 12909 based on Foata normal form. 42199/155851 useless extension candidates. Maximal degree in co-relation 163619. Up to 63142 conditions per place. [2025-02-08 14:05:40,205 INFO L140 encePairwiseOnDemand]: 115/140 looper letters, 117 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2025-02-08 14:05:40,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 185 transitions, 639 flow [2025-02-08 14:05:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 434 transitions. [2025-02-08 14:05:40,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.775 [2025-02-08 14:05:40,211 INFO L175 Difference]: Start difference. First operand has 121 places, 140 transitions, 307 flow. Second operand 4 states and 434 transitions. [2025-02-08 14:05:40,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 185 transitions, 639 flow [2025-02-08 14:05:40,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 185 transitions, 639 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:05:40,219 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 273 flow [2025-02-08 14:05:40,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2025-02-08 14:05:40,220 INFO L279 CegarLoopForPetriNet]: 121 programPoint places, 2 predicate places. [2025-02-08 14:05:40,220 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 273 flow [2025-02-08 14:05:40,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:40,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:40,220 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:05:40,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:05:40,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:05:40,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1144657405, now seen corresponding path program 1 times [2025-02-08 14:05:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147174071] [2025-02-08 14:05:40,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:40,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:05:40,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:05:40,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:40,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:40,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:40,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147174071] [2025-02-08 14:05:40,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147174071] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:40,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:40,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:40,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372897569] [2025-02-08 14:05:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:40,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:40,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:40,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:40,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 140 [2025-02-08 14:05:40,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:40,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:40,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 140 [2025-02-08 14:05:40,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:49,131 INFO L124 PetriNetUnfolderBase]: 82154/146313 cut-off events. [2025-02-08 14:05:49,131 INFO L125 PetriNetUnfolderBase]: For 7205/7205 co-relation queries the response was YES. [2025-02-08 14:05:49,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264867 conditions, 146313 events. 82154/146313 cut-off events. For 7205/7205 co-relation queries the response was YES. Maximal size of possible extension queue 3391. Compared 1529822 event pairs, 73657 based on Foata normal form. 13/134772 useless extension candidates. Maximal degree in co-relation 135133. Up to 111738 conditions per place. [2025-02-08 14:05:50,231 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 77 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2025-02-08 14:05:50,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 144 transitions, 487 flow [2025-02-08 14:05:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2025-02-08 14:05:50,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2025-02-08 14:05:50,234 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 273 flow. Second operand 4 states and 338 transitions. [2025-02-08 14:05:50,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 144 transitions, 487 flow [2025-02-08 14:05:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 144 transitions, 475 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:05:50,245 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 287 flow [2025-02-08 14:05:50,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2025-02-08 14:05:50,247 INFO L279 CegarLoopForPetriNet]: 121 programPoint places, 4 predicate places. [2025-02-08 14:05:50,248 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 287 flow [2025-02-08 14:05:50,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:50,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:50,248 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:05:50,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:05:50,248 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:05:50,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2015629296, now seen corresponding path program 1 times [2025-02-08 14:05:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:50,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864237804] [2025-02-08 14:05:50,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:50,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:50,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:05:50,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:05:50,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:50,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:50,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:50,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864237804] [2025-02-08 14:05:50,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864237804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:50,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:05:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512785147] [2025-02-08 14:05:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:50,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:50,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:50,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:50,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 140 [2025-02-08 14:05:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 140 [2025-02-08 14:05:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:03,354 INFO L124 PetriNetUnfolderBase]: 122608/215566 cut-off events. [2025-02-08 14:06:03,354 INFO L125 PetriNetUnfolderBase]: For 7158/9416 co-relation queries the response was YES. [2025-02-08 14:06:03,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389336 conditions, 215566 events. 122608/215566 cut-off events. For 7158/9416 co-relation queries the response was YES. Maximal size of possible extension queue 4997. Compared 2321268 event pairs, 39536 based on Foata normal form. 3015/197632 useless extension candidates. Maximal degree in co-relation 389232. Up to 115464 conditions per place.